./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0214.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0214.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI --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 3f6f146d76d903376288fe056dbbc9e1a8443f92d5e8b82343734efc8a9842e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:45:00,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:45:00,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:45:00,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:45:00,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:45:00,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:45:00,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:45:00,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:45:00,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:45:00,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:45:00,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:45:00,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:45:00,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:45:00,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:45:00,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:45:00,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:45:00,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:45:00,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:45:00,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:45:00,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:45:00,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:45:00,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:45:00,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:45:00,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:45:00,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:45:00,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:45:00,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:45:00,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:45:00,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:45:00,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:45:00,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:45:00,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:45:00,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:45:00,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:45:00,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:45:00,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:45:00,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:45:00,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:45:00,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:45:00,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:45:00,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:45:00,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-03 01:45:00,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:45:00,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:45:00,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:45:00,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:45:00,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:45:00,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:45:00,221 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:45:00,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:45:00,221 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:45:00,222 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:45:00,222 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:45:00,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:45:00,223 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:45:00,223 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:45:00,223 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:45:00,224 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:45:00,224 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:45:00,224 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:45:00,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 01:45:00,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 01:45:00,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:45:00,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:45:00,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:45:00,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:45:00,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:45:00,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:45:00,227 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 01:45:00,228 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 01:45:00,228 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-03 01:45:00,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:45:00,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:45:00,229 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:45:00,229 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:45:00,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:45:00,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:45:00,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:00,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:45:00,231 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:45:00,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:45:00,232 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:45:00,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:45:00,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:45:00,232 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_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f6f146d76d903376288fe056dbbc9e1a8443f92d5e8b82343734efc8a9842e4 [2022-11-03 01:45:00,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:45:00,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:45:00,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:45:00,499 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:45:00,500 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:45:00,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/memsafety/test-0214.i [2022-11-03 01:45:00,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/data/a3b3bc668/cb685c868609464b97f27e80060a898f/FLAG72b0b7438 [2022-11-03 01:45:01,075 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:45:01,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/sv-benchmarks/c/memsafety/test-0214.i [2022-11-03 01:45:01,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/data/a3b3bc668/cb685c868609464b97f27e80060a898f/FLAG72b0b7438 [2022-11-03 01:45:01,538 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/data/a3b3bc668/cb685c868609464b97f27e80060a898f [2022-11-03 01:45:01,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:45:01,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:45:01,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:01,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:45:01,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:45:01,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:01" (1/1) ... [2022-11-03 01:45:01,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c342182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:01, skipping insertion in model container [2022-11-03 01:45:01,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:45:01" (1/1) ... [2022-11-03 01:45:01,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:45:01,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:45:02,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:02,047 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:45:02,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:45:02,141 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:45:02,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02 WrapperNode [2022-11-03 01:45:02,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:45:02,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:02,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:45:02,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:45:02,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,204 INFO L138 Inliner]: procedures = 181, calls = 42, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 181 [2022-11-03 01:45:02,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:45:02,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:45:02,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:45:02,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:45:02,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,285 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:45:02,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:45:02,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:45:02,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:45:02,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (1/1) ... [2022-11-03 01:45:02,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:45:02,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:02,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:45:02,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:45:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2022-11-03 01:45:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2022-11-03 01:45:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:45:02,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:45:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:45:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:45:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:45:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:45:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:45:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:45:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:45:02,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:45:02,579 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:45:02,581 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:45:03,096 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:45:03,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:45:03,226 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 01:45:03,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:03 BoogieIcfgContainer [2022-11-03 01:45:03,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:45:03,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:45:03,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:45:03,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:45:03,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:45:01" (1/3) ... [2022-11-03 01:45:03,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc48e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:03, skipping insertion in model container [2022-11-03 01:45:03,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:45:02" (2/3) ... [2022-11-03 01:45:03,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc48e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:45:03, skipping insertion in model container [2022-11-03 01:45:03,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:45:03" (3/3) ... [2022-11-03 01:45:03,240 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0214.i [2022-11-03 01:45:03,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:45:03,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2022-11-03 01:45:03,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:45:03,315 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;@3514818b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:45:03,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-03 01:45:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 116 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:45:03,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:03,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:45:03,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 9036666, now seen corresponding path program 1 times [2022-11-03 01:45:03,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:03,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169579033] [2022-11-03 01:45:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:03,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:03,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:03,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169579033] [2022-11-03 01:45:03,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169579033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:03,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:03,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:45:03,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005218018] [2022-11-03 01:45:03,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:03,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:45:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:45:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:45:03,551 INFO L87 Difference]: Start difference. First operand has 120 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 116 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:03,635 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2022-11-03 01:45:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:45:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-03 01:45:03,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:03,652 INFO L225 Difference]: With dead ends: 120 [2022-11-03 01:45:03,652 INFO L226 Difference]: Without dead ends: 119 [2022-11-03 01:45:03,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:45:03,658 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:03,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:45:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-03 01:45:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-03 01:45:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 59 states have (on average 2.135593220338983) internal successors, (126), 115 states have internal predecessors, (126), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2022-11-03 01:45:03,728 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 4 [2022-11-03 01:45:03,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:03,729 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2022-11-03 01:45:03,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2022-11-03 01:45:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:45:03,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:03,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:45:03,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:45:03,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash 273773907, now seen corresponding path program 1 times [2022-11-03 01:45:03,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:03,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247870781] [2022-11-03 01:45:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:03,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:03,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247870781] [2022-11-03 01:45:03,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247870781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:03,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:03,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:45:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203994647] [2022-11-03 01:45:03,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:03,905 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:04,118 INFO L93 Difference]: Finished difference Result 231 states and 252 transitions. [2022-11-03 01:45:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:04,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-03 01:45:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:04,121 INFO L225 Difference]: With dead ends: 231 [2022-11-03 01:45:04,122 INFO L226 Difference]: Without dead ends: 231 [2022-11-03 01:45:04,122 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 [2022-11-03 01:45:04,123 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 114 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:04,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 136 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-03 01:45:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 154. [2022-11-03 01:45:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 91 states have (on average 2.098901098901099) internal successors, (191), 147 states have internal predecessors, (191), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:45:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 199 transitions. [2022-11-03 01:45:04,140 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 199 transitions. Word has length 5 [2022-11-03 01:45:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:04,140 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 199 transitions. [2022-11-03 01:45:04,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 199 transitions. [2022-11-03 01:45:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:45:04,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:04,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:45:04,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:45:04,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:04,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:04,143 INFO L85 PathProgramCache]: Analyzing trace with hash 273773908, now seen corresponding path program 1 times [2022-11-03 01:45:04,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:04,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651495845] [2022-11-03 01:45:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:04,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:04,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:04,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651495845] [2022-11-03 01:45:04,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651495845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:04,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:04,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:45:04,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251522536] [2022-11-03 01:45:04,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:04,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:04,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:04,419 INFO L87 Difference]: Start difference. First operand 154 states and 199 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:04,730 INFO L93 Difference]: Finished difference Result 260 states and 325 transitions. [2022-11-03 01:45:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:04,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-11-03 01:45:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:04,735 INFO L225 Difference]: With dead ends: 260 [2022-11-03 01:45:04,735 INFO L226 Difference]: Without dead ends: 260 [2022-11-03 01:45:04,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:04,743 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 104 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:04,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 243 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-03 01:45:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 212. [2022-11-03 01:45:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 143 states have (on average 2.020979020979021) internal successors, (289), 201 states have internal predecessors, (289), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-03 01:45:04,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 305 transitions. [2022-11-03 01:45:04,768 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 305 transitions. Word has length 5 [2022-11-03 01:45:04,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:04,768 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 305 transitions. [2022-11-03 01:45:04,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:04,769 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 305 transitions. [2022-11-03 01:45:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:45:04,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:04,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:04,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:45:04,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1103762203, now seen corresponding path program 1 times [2022-11-03 01:45:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:04,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866859269] [2022-11-03 01:45:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:04,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:04,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:04,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866859269] [2022-11-03 01:45:04,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866859269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:04,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:04,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 01:45:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335114820] [2022-11-03 01:45:04,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:04,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:04,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:04,843 INFO L87 Difference]: Start difference. First operand 212 states and 305 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:05,002 INFO L93 Difference]: Finished difference Result 271 states and 361 transitions. [2022-11-03 01:45:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:05,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:45:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:05,005 INFO L225 Difference]: With dead ends: 271 [2022-11-03 01:45:05,005 INFO L226 Difference]: Without dead ends: 270 [2022-11-03 01:45:05,005 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 [2022-11-03 01:45:05,006 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:05,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 158 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-03 01:45:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 213. [2022-11-03 01:45:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 144 states have (on average 2.013888888888889) internal successors, (290), 202 states have internal predecessors, (290), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-03 01:45:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 306 transitions. [2022-11-03 01:45:05,017 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 306 transitions. Word has length 7 [2022-11-03 01:45:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:05,017 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 306 transitions. [2022-11-03 01:45:05,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:05,018 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 306 transitions. [2022-11-03 01:45:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:45:05,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:05,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:05,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:45:05,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1103760856, now seen corresponding path program 1 times [2022-11-03 01:45:05,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:05,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405023793] [2022-11-03 01:45:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:05,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:05,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:05,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405023793] [2022-11-03 01:45:05,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405023793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:05,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:05,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:05,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067299506] [2022-11-03 01:45:05,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:05,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:05,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:05,453 INFO L87 Difference]: Start difference. First operand 213 states and 306 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:05,698 INFO L93 Difference]: Finished difference Result 285 states and 386 transitions. [2022-11-03 01:45:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:45:05,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:45:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:05,701 INFO L225 Difference]: With dead ends: 285 [2022-11-03 01:45:05,701 INFO L226 Difference]: Without dead ends: 282 [2022-11-03 01:45:05,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:05,702 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 140 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:05,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 255 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-03 01:45:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 243. [2022-11-03 01:45:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 171 states have (on average 2.0) internal successors, (342), 230 states have internal predecessors, (342), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 362 transitions. [2022-11-03 01:45:05,715 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 362 transitions. Word has length 7 [2022-11-03 01:45:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:05,716 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 362 transitions. [2022-11-03 01:45:05,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:45:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 362 transitions. [2022-11-03 01:45:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:45:05,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:05,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:05,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:45:05,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1231512253, now seen corresponding path program 1 times [2022-11-03 01:45:05,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:05,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141428400] [2022-11-03 01:45:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:05,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:05,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:05,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141428400] [2022-11-03 01:45:05,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141428400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:05,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:05,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629484537] [2022-11-03 01:45:05,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:05,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:05,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:05,790 INFO L87 Difference]: Start difference. First operand 243 states and 362 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:06,080 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2022-11-03 01:45:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:06,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-03 01:45:06,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:06,083 INFO L225 Difference]: With dead ends: 359 [2022-11-03 01:45:06,083 INFO L226 Difference]: Without dead ends: 359 [2022-11-03 01:45:06,083 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 [2022-11-03 01:45:06,084 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 212 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:06,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 231 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-03 01:45:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 243. [2022-11-03 01:45:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 171 states have (on average 1.9649122807017543) internal successors, (336), 230 states have internal predecessors, (336), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 356 transitions. [2022-11-03 01:45:06,095 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 356 transitions. Word has length 10 [2022-11-03 01:45:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:06,095 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 356 transitions. [2022-11-03 01:45:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 356 transitions. [2022-11-03 01:45:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:45:06,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:06,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:06,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:45:06,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:06,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1231512254, now seen corresponding path program 1 times [2022-11-03 01:45:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:06,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713258258] [2022-11-03 01:45:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:06,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:06,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:06,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713258258] [2022-11-03 01:45:06,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713258258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:06,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:06,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:06,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614257091] [2022-11-03 01:45:06,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:06,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:06,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:06,324 INFO L87 Difference]: Start difference. First operand 243 states and 356 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:06,844 INFO L93 Difference]: Finished difference Result 434 states and 556 transitions. [2022-11-03 01:45:06,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-03 01:45:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:06,846 INFO L225 Difference]: With dead ends: 434 [2022-11-03 01:45:06,846 INFO L226 Difference]: Without dead ends: 434 [2022-11-03 01:45:06,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:06,847 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 207 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:06,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 527 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:06,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-03 01:45:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 261. [2022-11-03 01:45:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 189 states have (on average 1.9788359788359788) internal successors, (374), 246 states have internal predecessors, (374), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2022-11-03 01:45:06,862 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 10 [2022-11-03 01:45:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:06,862 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2022-11-03 01:45:06,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2022-11-03 01:45:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:45:06,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:06,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:06,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:45:06,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash -477817706, now seen corresponding path program 1 times [2022-11-03 01:45:06,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:06,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090853458] [2022-11-03 01:45:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:06,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:06,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:06,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090853458] [2022-11-03 01:45:06,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090853458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:06,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:06,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:45:06,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155181959] [2022-11-03 01:45:06,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:06,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:45:06,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:06,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:45:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:06,941 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:07,092 INFO L93 Difference]: Finished difference Result 337 states and 469 transitions. [2022-11-03 01:45:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:45:07,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-03 01:45:07,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:07,095 INFO L225 Difference]: With dead ends: 337 [2022-11-03 01:45:07,095 INFO L226 Difference]: Without dead ends: 337 [2022-11-03 01:45:07,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:45:07,096 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 110 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:07,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 183 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:45:07,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-03 01:45:07,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 258. [2022-11-03 01:45:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 189 states have (on average 1.9153439153439153) internal successors, (362), 243 states have internal predecessors, (362), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 382 transitions. [2022-11-03 01:45:07,105 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 382 transitions. Word has length 11 [2022-11-03 01:45:07,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:07,105 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 382 transitions. [2022-11-03 01:45:07,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 382 transitions. [2022-11-03 01:45:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:45:07,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:07,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:07,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:45:07,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:07,107 INFO L85 PathProgramCache]: Analyzing trace with hash -477817705, now seen corresponding path program 1 times [2022-11-03 01:45:07,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:07,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032380765] [2022-11-03 01:45:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:07,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:07,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:07,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032380765] [2022-11-03 01:45:07,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032380765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:07,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:07,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:07,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30275576] [2022-11-03 01:45:07,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:07,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:07,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:07,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:07,377 INFO L87 Difference]: Start difference. First operand 258 states and 382 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:07,692 INFO L93 Difference]: Finished difference Result 299 states and 386 transitions. [2022-11-03 01:45:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:07,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-03 01:45:07,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:07,694 INFO L225 Difference]: With dead ends: 299 [2022-11-03 01:45:07,694 INFO L226 Difference]: Without dead ends: 299 [2022-11-03 01:45:07,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:07,695 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 268 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:07,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 542 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-03 01:45:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 256. [2022-11-03 01:45:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 189 states have (on average 1.873015873015873) internal successors, (354), 241 states have internal predecessors, (354), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 374 transitions. [2022-11-03 01:45:07,704 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 374 transitions. Word has length 11 [2022-11-03 01:45:07,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:07,704 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 374 transitions. [2022-11-03 01:45:07,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 374 transitions. [2022-11-03 01:45:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:45:07,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:07,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:07,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:45:07,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:07,706 INFO L85 PathProgramCache]: Analyzing trace with hash 254841918, now seen corresponding path program 1 times [2022-11-03 01:45:07,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:07,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116146910] [2022-11-03 01:45:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:07,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:07,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:07,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116146910] [2022-11-03 01:45:07,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116146910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:07,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:07,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:07,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077250527] [2022-11-03 01:45:07,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:07,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:07,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:07,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:07,754 INFO L87 Difference]: Start difference. First operand 256 states and 374 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:08,017 INFO L93 Difference]: Finished difference Result 403 states and 545 transitions. [2022-11-03 01:45:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:08,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-03 01:45:08,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:08,019 INFO L225 Difference]: With dead ends: 403 [2022-11-03 01:45:08,020 INFO L226 Difference]: Without dead ends: 403 [2022-11-03 01:45:08,020 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 [2022-11-03 01:45:08,021 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 194 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:08,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 226 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-03 01:45:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 262. [2022-11-03 01:45:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 195 states have (on average 1.8461538461538463) internal successors, (360), 247 states have internal predecessors, (360), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 380 transitions. [2022-11-03 01:45:08,032 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 380 transitions. Word has length 12 [2022-11-03 01:45:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:08,032 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 380 transitions. [2022-11-03 01:45:08,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 380 transitions. [2022-11-03 01:45:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:45:08,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:08,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:45:08,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 254841919, now seen corresponding path program 1 times [2022-11-03 01:45:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248765730] [2022-11-03 01:45:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:08,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:08,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:08,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248765730] [2022-11-03 01:45:08,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248765730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:08,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:08,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:08,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717541553] [2022-11-03 01:45:08,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:08,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:08,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:08,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:08,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:08,145 INFO L87 Difference]: Start difference. First operand 262 states and 380 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:08,349 INFO L93 Difference]: Finished difference Result 313 states and 398 transitions. [2022-11-03 01:45:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:08,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-03 01:45:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:08,351 INFO L225 Difference]: With dead ends: 313 [2022-11-03 01:45:08,351 INFO L226 Difference]: Without dead ends: 313 [2022-11-03 01:45:08,351 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 [2022-11-03 01:45:08,352 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 164 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:08,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 242 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-03 01:45:08,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 262. [2022-11-03 01:45:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 195 states have (on average 1.8) internal successors, (351), 247 states have internal predecessors, (351), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 371 transitions. [2022-11-03 01:45:08,362 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 371 transitions. Word has length 12 [2022-11-03 01:45:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:08,362 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 371 transitions. [2022-11-03 01:45:08,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 371 transitions. [2022-11-03 01:45:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:45:08,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:08,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:08,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:45:08,363 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:08,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1927446970, now seen corresponding path program 1 times [2022-11-03 01:45:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:08,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316405908] [2022-11-03 01:45:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:08,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:08,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316405908] [2022-11-03 01:45:08,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316405908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:08,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:08,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264059632] [2022-11-03 01:45:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:08,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:08,712 INFO L87 Difference]: Start difference. First operand 262 states and 371 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:09,054 INFO L93 Difference]: Finished difference Result 301 states and 379 transitions. [2022-11-03 01:45:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:09,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-03 01:45:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:09,056 INFO L225 Difference]: With dead ends: 301 [2022-11-03 01:45:09,056 INFO L226 Difference]: Without dead ends: 301 [2022-11-03 01:45:09,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:09,057 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 264 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:09,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 529 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-03 01:45:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 261. [2022-11-03 01:45:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 195 states have (on average 1.7794871794871794) internal successors, (347), 246 states have internal predecessors, (347), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 367 transitions. [2022-11-03 01:45:09,064 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 367 transitions. Word has length 12 [2022-11-03 01:45:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:09,065 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 367 transitions. [2022-11-03 01:45:09,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:09,065 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 367 transitions. [2022-11-03 01:45:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:45:09,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:09,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:09,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:45:09,066 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:09,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1154702005, now seen corresponding path program 1 times [2022-11-03 01:45:09,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:09,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810323917] [2022-11-03 01:45:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:09,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:09,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810323917] [2022-11-03 01:45:09,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810323917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:09,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:09,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231595141] [2022-11-03 01:45:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:09,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:09,503 INFO L87 Difference]: Start difference. First operand 261 states and 367 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:10,123 INFO L93 Difference]: Finished difference Result 433 states and 551 transitions. [2022-11-03 01:45:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:10,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-03 01:45:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:10,125 INFO L225 Difference]: With dead ends: 433 [2022-11-03 01:45:10,126 INFO L226 Difference]: Without dead ends: 433 [2022-11-03 01:45:10,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:10,127 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 179 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:10,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 832 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-03 01:45:10,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 266. [2022-11-03 01:45:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 200 states have (on average 1.75) internal successors, (350), 250 states have internal predecessors, (350), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2022-11-03 01:45:10,135 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 15 [2022-11-03 01:45:10,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:10,136 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2022-11-03 01:45:10,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:10,136 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2022-11-03 01:45:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:45:10,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:10,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:10,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:45:10,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash 683903110, now seen corresponding path program 1 times [2022-11-03 01:45:10,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:10,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803091535] [2022-11-03 01:45:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:10,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:10,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:10,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803091535] [2022-11-03 01:45:10,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803091535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:10,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:10,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:10,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979991182] [2022-11-03 01:45:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:10,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:10,469 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:10,915 INFO L93 Difference]: Finished difference Result 472 states and 623 transitions. [2022-11-03 01:45:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 01:45:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:10,919 INFO L225 Difference]: With dead ends: 472 [2022-11-03 01:45:10,919 INFO L226 Difference]: Without dead ends: 470 [2022-11-03 01:45:10,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:10,920 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 269 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:10,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 649 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-03 01:45:10,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 260. [2022-11-03 01:45:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 194 states have (on average 1.7474226804123711) internal successors, (339), 244 states have internal predecessors, (339), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 359 transitions. [2022-11-03 01:45:10,929 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 359 transitions. Word has length 16 [2022-11-03 01:45:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:10,929 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 359 transitions. [2022-11-03 01:45:10,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 359 transitions. [2022-11-03 01:45:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:45:10,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:10,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:10,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:45:10,931 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:10,931 INFO L85 PathProgramCache]: Analyzing trace with hash -273464699, now seen corresponding path program 1 times [2022-11-03 01:45:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:10,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321545184] [2022-11-03 01:45:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:11,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:11,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321545184] [2022-11-03 01:45:11,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321545184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:11,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:11,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:45:11,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795789976] [2022-11-03 01:45:11,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:11,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:45:11,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:11,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:45:11,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:45:11,009 INFO L87 Difference]: Start difference. First operand 260 states and 359 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:11,271 INFO L93 Difference]: Finished difference Result 393 states and 508 transitions. [2022-11-03 01:45:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:11,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 01:45:11,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:11,273 INFO L225 Difference]: With dead ends: 393 [2022-11-03 01:45:11,273 INFO L226 Difference]: Without dead ends: 393 [2022-11-03 01:45:11,273 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 [2022-11-03 01:45:11,274 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 177 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:11,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 230 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:11,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-03 01:45:11,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 276. [2022-11-03 01:45:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 210 states have (on average 1.7857142857142858) internal successors, (375), 260 states have internal predecessors, (375), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 395 transitions. [2022-11-03 01:45:11,288 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 395 transitions. Word has length 17 [2022-11-03 01:45:11,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:11,289 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 395 transitions. [2022-11-03 01:45:11,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 395 transitions. [2022-11-03 01:45:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:45:11,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:11,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:11,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:45:11,290 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:11,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash -273464698, now seen corresponding path program 1 times [2022-11-03 01:45:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:11,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246794163] [2022-11-03 01:45:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:11,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:11,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:11,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246794163] [2022-11-03 01:45:11,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246794163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:11,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:11,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113424889] [2022-11-03 01:45:11,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:11,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:11,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:11,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:11,473 INFO L87 Difference]: Start difference. First operand 276 states and 395 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:11,738 INFO L93 Difference]: Finished difference Result 324 states and 413 transitions. [2022-11-03 01:45:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:45:11,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 01:45:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:11,740 INFO L225 Difference]: With dead ends: 324 [2022-11-03 01:45:11,740 INFO L226 Difference]: Without dead ends: 324 [2022-11-03 01:45:11,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:11,741 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 235 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:11,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 310 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-03 01:45:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 276. [2022-11-03 01:45:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 210 states have (on average 1.7428571428571429) internal successors, (366), 260 states have internal predecessors, (366), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 386 transitions. [2022-11-03 01:45:11,749 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 386 transitions. Word has length 17 [2022-11-03 01:45:11,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:11,750 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 386 transitions. [2022-11-03 01:45:11,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:11,750 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 386 transitions. [2022-11-03 01:45:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:45:11,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:11,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:11,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 01:45:11,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:11,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1566726611, now seen corresponding path program 1 times [2022-11-03 01:45:11,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:11,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927690097] [2022-11-03 01:45:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:11,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:11,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927690097] [2022-11-03 01:45:11,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927690097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:11,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:11,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117327943] [2022-11-03 01:45:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:11,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:11,969 INFO L87 Difference]: Start difference. First operand 276 states and 386 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:12,166 INFO L93 Difference]: Finished difference Result 308 states and 390 transitions. [2022-11-03 01:45:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:45:12,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 01:45:12,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:12,168 INFO L225 Difference]: With dead ends: 308 [2022-11-03 01:45:12,168 INFO L226 Difference]: Without dead ends: 308 [2022-11-03 01:45:12,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:12,169 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 241 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:12,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 217 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-03 01:45:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 272. [2022-11-03 01:45:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 210 states have (on average 1.7047619047619047) internal successors, (358), 256 states have internal predecessors, (358), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 378 transitions. [2022-11-03 01:45:12,177 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 378 transitions. Word has length 17 [2022-11-03 01:45:12,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:12,177 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 378 transitions. [2022-11-03 01:45:12,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:12,178 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 378 transitions. [2022-11-03 01:45:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 01:45:12,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:12,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:12,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 01:45:12,179 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:12,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash 766235340, now seen corresponding path program 1 times [2022-11-03 01:45:12,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:12,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30081947] [2022-11-03 01:45:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:12,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:12,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30081947] [2022-11-03 01:45:12,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30081947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:12,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:12,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:45:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348881791] [2022-11-03 01:45:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:12,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:45:12,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:45:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:45:12,445 INFO L87 Difference]: Start difference. First operand 272 states and 378 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:13,004 INFO L93 Difference]: Finished difference Result 389 states and 519 transitions. [2022-11-03 01:45:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:45:13,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-03 01:45:13,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:13,006 INFO L225 Difference]: With dead ends: 389 [2022-11-03 01:45:13,006 INFO L226 Difference]: Without dead ends: 389 [2022-11-03 01:45:13,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:45:13,007 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 367 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:13,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 598 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:13,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-03 01:45:13,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 269. [2022-11-03 01:45:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 210 states have (on average 1.6571428571428573) internal successors, (348), 253 states have internal predecessors, (348), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 368 transitions. [2022-11-03 01:45:13,021 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 368 transitions. Word has length 20 [2022-11-03 01:45:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:13,022 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 368 transitions. [2022-11-03 01:45:13,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 368 transitions. [2022-11-03 01:45:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:45:13,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:13,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:13,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 01:45:13,027 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:13,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:13,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2016505869, now seen corresponding path program 1 times [2022-11-03 01:45:13,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:13,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305423736] [2022-11-03 01:45:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:13,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:13,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:13,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305423736] [2022-11-03 01:45:13,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305423736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:13,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:13,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:13,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33597265] [2022-11-03 01:45:13,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:13,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:13,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:13,353 INFO L87 Difference]: Start difference. First operand 269 states and 368 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:13,642 INFO L93 Difference]: Finished difference Result 291 states and 375 transitions. [2022-11-03 01:45:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:13,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-03 01:45:13,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:13,644 INFO L225 Difference]: With dead ends: 291 [2022-11-03 01:45:13,644 INFO L226 Difference]: Without dead ends: 291 [2022-11-03 01:45:13,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:13,645 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 83 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:13,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 442 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-03 01:45:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 265. [2022-11-03 01:45:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 206 states have (on average 1.6407766990291262) internal successors, (338), 249 states have internal predecessors, (338), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:13,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 358 transitions. [2022-11-03 01:45:13,651 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 358 transitions. Word has length 21 [2022-11-03 01:45:13,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:13,652 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 358 transitions. [2022-11-03 01:45:13,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,652 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 358 transitions. [2022-11-03 01:45:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:45:13,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:13,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:13,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 01:45:13,653 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:13,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2016644788, now seen corresponding path program 1 times [2022-11-03 01:45:13,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:13,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915764153] [2022-11-03 01:45:13,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:13,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:13,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:13,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915764153] [2022-11-03 01:45:13,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915764153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:13,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:13,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894215089] [2022-11-03 01:45:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:13,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:13,770 INFO L87 Difference]: Start difference. First operand 265 states and 358 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:13,959 INFO L93 Difference]: Finished difference Result 290 states and 374 transitions. [2022-11-03 01:45:13,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:13,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-03 01:45:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:13,962 INFO L225 Difference]: With dead ends: 290 [2022-11-03 01:45:13,962 INFO L226 Difference]: Without dead ends: 290 [2022-11-03 01:45:13,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:13,964 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 83 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:13,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 358 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-03 01:45:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 265. [2022-11-03 01:45:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 206 states have (on average 1.6359223300970873) internal successors, (337), 249 states have internal predecessors, (337), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:45:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 357 transitions. [2022-11-03 01:45:13,976 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 357 transitions. Word has length 21 [2022-11-03 01:45:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:13,976 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 357 transitions. [2022-11-03 01:45:13,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 357 transitions. [2022-11-03 01:45:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 01:45:13,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:13,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:13,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 01:45:13,980 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:13,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1908521203, now seen corresponding path program 1 times [2022-11-03 01:45:13,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:13,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464775836] [2022-11-03 01:45:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:13,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:14,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:14,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464775836] [2022-11-03 01:45:14,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464775836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:14,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:14,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:45:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625104289] [2022-11-03 01:45:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:14,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:45:14,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:45:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:45:14,155 INFO L87 Difference]: Start difference. First operand 265 states and 357 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:14,397 INFO L93 Difference]: Finished difference Result 346 states and 448 transitions. [2022-11-03 01:45:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:45:14,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-11-03 01:45:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:14,399 INFO L225 Difference]: With dead ends: 346 [2022-11-03 01:45:14,399 INFO L226 Difference]: Without dead ends: 346 [2022-11-03 01:45:14,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:14,400 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 126 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:14,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 336 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-03 01:45:14,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 295. [2022-11-03 01:45:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 233 states have (on average 1.6266094420600858) internal successors, (379), 277 states have internal predecessors, (379), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:45:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 403 transitions. [2022-11-03 01:45:14,406 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 403 transitions. Word has length 22 [2022-11-03 01:45:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:14,410 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 403 transitions. [2022-11-03 01:45:14,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 403 transitions. [2022-11-03 01:45:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 01:45:14,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:14,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:14,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 01:45:14,411 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:14,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:14,412 INFO L85 PathProgramCache]: Analyzing trace with hash 137846869, now seen corresponding path program 1 times [2022-11-03 01:45:14,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:14,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229662637] [2022-11-03 01:45:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:14,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:14,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:14,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229662637] [2022-11-03 01:45:14,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229662637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:14,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:14,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644586711] [2022-11-03 01:45:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:14,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:14,628 INFO L87 Difference]: Start difference. First operand 295 states and 403 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:15,215 INFO L93 Difference]: Finished difference Result 538 states and 713 transitions. [2022-11-03 01:45:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:45:15,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-03 01:45:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:15,218 INFO L225 Difference]: With dead ends: 538 [2022-11-03 01:45:15,218 INFO L226 Difference]: Without dead ends: 538 [2022-11-03 01:45:15,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:15,219 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 266 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:15,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 471 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:45:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-03 01:45:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 324. [2022-11-03 01:45:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 259 states have (on average 1.6023166023166022) internal successors, (415), 304 states have internal predecessors, (415), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:45:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 443 transitions. [2022-11-03 01:45:15,228 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 443 transitions. Word has length 24 [2022-11-03 01:45:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:15,228 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 443 transitions. [2022-11-03 01:45:15,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 443 transitions. [2022-11-03 01:45:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-03 01:45:15,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:15,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:15,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 01:45:15,230 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:15,230 INFO L85 PathProgramCache]: Analyzing trace with hash -21714160, now seen corresponding path program 1 times [2022-11-03 01:45:15,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:15,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470861486] [2022-11-03 01:45:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:15,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:15,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:15,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470861486] [2022-11-03 01:45:15,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470861486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:15,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:15,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:15,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589612157] [2022-11-03 01:45:15,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:15,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:15,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:15,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:15,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:15,439 INFO L87 Difference]: Start difference. First operand 324 states and 443 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:15,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:15,805 INFO L93 Difference]: Finished difference Result 376 states and 473 transitions. [2022-11-03 01:45:15,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:15,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-03 01:45:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:15,807 INFO L225 Difference]: With dead ends: 376 [2022-11-03 01:45:15,808 INFO L226 Difference]: Without dead ends: 376 [2022-11-03 01:45:15,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:45:15,808 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 301 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:15,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 395 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:45:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-03 01:45:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 324. [2022-11-03 01:45:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 259 states have (on average 1.5868725868725868) internal successors, (411), 304 states have internal predecessors, (411), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:45:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 439 transitions. [2022-11-03 01:45:15,816 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 439 transitions. Word has length 25 [2022-11-03 01:45:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:15,817 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 439 transitions. [2022-11-03 01:45:15,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 439 transitions. [2022-11-03 01:45:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 01:45:15,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:15,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:15,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 01:45:15,818 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:15,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash -390504100, now seen corresponding path program 1 times [2022-11-03 01:45:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:15,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873228411] [2022-11-03 01:45:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:15,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:45:16,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:16,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873228411] [2022-11-03 01:45:16,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873228411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:16,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930587595] [2022-11-03 01:45:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:16,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:16,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:16,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:45:16,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:45:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:16,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 01:45:16,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:16,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:45:16,960 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:16,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-03 01:45:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:45:17,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930587595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:45:17,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1884933684] [2022-11-03 01:45:17,160 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-03 01:45:17,161 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:45:17,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:45:17,171 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:45:17,171 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:45:17,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:17,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:17,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:17,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:17,442 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:45:17,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:45:17,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:17,658 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:45:17,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:45:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:17,704 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:45:17,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:45:17,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:17,776 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:45:17,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:45:17,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:17,990 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:45:17,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 267 treesize of output 258 [2022-11-03 01:45:18,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,105 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:45:18,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-03 01:45:18,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,160 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:45:18,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:45:18,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,369 INFO L356 Elim1Store]: treesize reduction 260, result has 9.1 percent of original size [2022-11-03 01:45:18,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 264 [2022-11-03 01:45:18,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,452 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:45:18,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 282 treesize of output 261 [2022-11-03 01:45:18,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 233 [2022-11-03 01:45:18,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,852 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:45:18,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 278 treesize of output 290 [2022-11-03 01:45:18,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:18,914 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:45:18,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-03 01:45:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:19,032 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:45:19,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 258 treesize of output 252 [2022-11-03 01:45:19,833 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:19,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:19,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:45:19,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:19,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:19,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:20,003 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:20,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:45:20,044 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:20,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:45:20,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:20,181 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:20,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:45:20,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:20,282 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:20,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:45:20,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:20,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:20,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:21,341 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:45:21,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:45:21,378 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:21,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:21,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:21,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:21,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:21,526 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:21,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:45:21,563 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:21,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:45:21,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:21,673 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:21,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:45:21,761 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:21,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:45:21,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:21,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:21,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:21,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:22,251 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:45:22,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:45:22,282 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:22,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:22,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:22,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:22,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:22,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:22,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:45:22,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:22,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:22,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:45:22,475 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:45:22,487 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:45:26,721 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14127#(and (<= |~#list~0.base| 3) (= |~#list~0.offset| |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 0 |#NULL.base|) (not (<= (+ (* 4 |ULTIMATE.start_append_one_~to#1|) |ULTIMATE.start_append_one_~list#1.offset| 4) (select |#length| |ULTIMATE.start_append_one_~list#1.base|))) (<= |#NULL.offset| 0) (= |ULTIMATE.start_append_one_~list#1.offset| |ULTIMATE.start_append_one_#in~list#1.offset|) (= |ULTIMATE.start_append_one_#in~to#1| |ULTIMATE.start_main_#t~ret23#1|) (= |ULTIMATE.start_append_one_#in~list#1.base| |ULTIMATE.start_append_one_~list#1.base|) (= |ULTIMATE.start_append_one_#in~to#1| |ULTIMATE.start_append_one_~to#1|) (<= |#NULL.base| 0) (or (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret23#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret23#1|)) (= |ULTIMATE.start_append_one_#in~list#1.base| |~#list~0.base|) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#list~0.offset| 0))' at error location [2022-11-03 01:45:26,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:45:26,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:45:26,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 20 [2022-11-03 01:45:26,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151244795] [2022-11-03 01:45:26,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:45:26,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 01:45:26,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:26,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 01:45:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 01:45:26,724 INFO L87 Difference]: Start difference. First operand 324 states and 439 transitions. Second operand has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 01:45:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:27,229 INFO L93 Difference]: Finished difference Result 355 states and 447 transitions. [2022-11-03 01:45:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:45:27,230 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2022-11-03 01:45:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:27,231 INFO L225 Difference]: With dead ends: 355 [2022-11-03 01:45:27,231 INFO L226 Difference]: Without dead ends: 355 [2022-11-03 01:45:27,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=354, Invalid=1368, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 01:45:27,232 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 630 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:27,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 793 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:45:27,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-03 01:45:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 311. [2022-11-03 01:45:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 248 states have (on average 1.5766129032258065) internal successors, (391), 292 states have internal predecessors, (391), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:45:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 419 transitions. [2022-11-03 01:45:27,240 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 419 transitions. Word has length 28 [2022-11-03 01:45:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:27,241 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 419 transitions. [2022-11-03 01:45:27,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-03 01:45:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 419 transitions. [2022-11-03 01:45:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 01:45:27,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:27,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:27,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:27,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:27,455 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1099441663, now seen corresponding path program 1 times [2022-11-03 01:45:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:27,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132204311] [2022-11-03 01:45:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:27,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:27,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132204311] [2022-11-03 01:45:27,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132204311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:27,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:27,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:45:27,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953656052] [2022-11-03 01:45:27,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:27,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:45:27,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:45:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:45:27,737 INFO L87 Difference]: Start difference. First operand 311 states and 419 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:28,036 INFO L93 Difference]: Finished difference Result 344 states and 430 transitions. [2022-11-03 01:45:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:28,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-03 01:45:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:28,038 INFO L225 Difference]: With dead ends: 344 [2022-11-03 01:45:28,038 INFO L226 Difference]: Without dead ends: 344 [2022-11-03 01:45:28,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:45:28,039 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 469 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:28,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 260 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:28,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-03 01:45:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 306. [2022-11-03 01:45:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 244 states have (on average 1.5737704918032787) internal successors, (384), 287 states have internal predecessors, (384), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:45:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 412 transitions. [2022-11-03 01:45:28,048 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 412 transitions. Word has length 29 [2022-11-03 01:45:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:28,048 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 412 transitions. [2022-11-03 01:45:28,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 412 transitions. [2022-11-03 01:45:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 01:45:28,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:28,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:28,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 01:45:28,050 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:28,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash 570254173, now seen corresponding path program 1 times [2022-11-03 01:45:28,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:28,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101539234] [2022-11-03 01:45:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:28,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:45:28,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:28,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101539234] [2022-11-03 01:45:28,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101539234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:28,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:28,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:45:28,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355450853] [2022-11-03 01:45:28,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:28,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:45:28,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:45:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:45:28,294 INFO L87 Difference]: Start difference. First operand 306 states and 412 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:28,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:28,553 INFO L93 Difference]: Finished difference Result 393 states and 491 transitions. [2022-11-03 01:45:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:45:28,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-03 01:45:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:28,574 INFO L225 Difference]: With dead ends: 393 [2022-11-03 01:45:28,574 INFO L226 Difference]: Without dead ends: 393 [2022-11-03 01:45:28,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:45:28,575 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 419 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:28,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 224 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:45:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-03 01:45:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 304. [2022-11-03 01:45:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 244 states have (on average 1.5573770491803278) internal successors, (380), 285 states have internal predecessors, (380), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:45:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 408 transitions. [2022-11-03 01:45:28,582 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 408 transitions. Word has length 30 [2022-11-03 01:45:28,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:28,582 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 408 transitions. [2022-11-03 01:45:28,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:45:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 408 transitions. [2022-11-03 01:45:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 01:45:28,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:28,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:28,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 01:45:28,585 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:28,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1441656, now seen corresponding path program 1 times [2022-11-03 01:45:28,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:28,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88429836] [2022-11-03 01:45:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:28,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:30,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:30,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88429836] [2022-11-03 01:45:30,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88429836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:45:30,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:45:30,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 01:45:30,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135482862] [2022-11-03 01:45:30,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:30,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:45:30,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:30,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:45:30,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:45:30,013 INFO L87 Difference]: Start difference. First operand 304 states and 408 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:31,171 INFO L93 Difference]: Finished difference Result 330 states and 432 transitions. [2022-11-03 01:45:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:45:31,172 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-11-03 01:45:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:31,173 INFO L225 Difference]: With dead ends: 330 [2022-11-03 01:45:31,173 INFO L226 Difference]: Without dead ends: 330 [2022-11-03 01:45:31,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:45:31,174 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 78 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:31,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 793 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:45:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-03 01:45:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 316. [2022-11-03 01:45:31,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 256 states have (on average 1.55078125) internal successors, (397), 297 states have internal predecessors, (397), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:45:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 425 transitions. [2022-11-03 01:45:31,182 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 425 transitions. Word has length 31 [2022-11-03 01:45:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:31,182 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 425 transitions. [2022-11-03 01:45:31,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:31,183 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 425 transitions. [2022-11-03 01:45:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:45:31,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:31,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:31,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 01:45:31,184 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash -218786070, now seen corresponding path program 1 times [2022-11-03 01:45:31,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:31,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227737102] [2022-11-03 01:45:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:31,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:33,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:33,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227737102] [2022-11-03 01:45:33,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227737102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:33,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696121512] [2022-11-03 01:45:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:33,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:33,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:33,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:45:33,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:45:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:33,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 01:45:33,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:33,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:33,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:45:33,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:33,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:33,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 30 [2022-11-03 01:45:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:34,095 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:45:34,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 14 [2022-11-03 01:45:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:34,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:45:34,417 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:34,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 255 treesize of output 257 [2022-11-03 01:45:34,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:45:34,472 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-03 01:45:34,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 280 treesize of output 286 [2022-11-03 01:45:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:35,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696121512] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:35,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:45:35,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16, 14] total 39 [2022-11-03 01:45:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282964290] [2022-11-03 01:45:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:45:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:45:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:45:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:45:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1360, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 01:45:35,504 INFO L87 Difference]: Start difference. First operand 316 states and 425 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:45:38,419 INFO L93 Difference]: Finished difference Result 544 states and 668 transitions. [2022-11-03 01:45:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 01:45:38,419 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-03 01:45:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:45:38,423 INFO L225 Difference]: With dead ends: 544 [2022-11-03 01:45:38,423 INFO L226 Difference]: Without dead ends: 544 [2022-11-03 01:45:38,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=311, Invalid=2769, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 01:45:38,425 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 987 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:45:38,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1137 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 01:45:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-03 01:45:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 381. [2022-11-03 01:45:38,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 315 states have (on average 1.561904761904762) internal successors, (492), 358 states have internal predecessors, (492), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 01:45:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 528 transitions. [2022-11-03 01:45:38,437 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 528 transitions. Word has length 32 [2022-11-03 01:45:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:45:38,437 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 528 transitions. [2022-11-03 01:45:38,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:45:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 528 transitions. [2022-11-03 01:45:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:45:38,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:45:38,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:45:38,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:45:38,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:38,655 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:45:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:45:38,656 INFO L85 PathProgramCache]: Analyzing trace with hash -218787417, now seen corresponding path program 1 times [2022-11-03 01:45:38,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:45:38,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808115276] [2022-11-03 01:45:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:45:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:40,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:45:40,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808115276] [2022-11-03 01:45:40,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808115276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:45:40,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633106574] [2022-11-03 01:45:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:45:40,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:45:40,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:45:40,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:45:40,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:45:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:45:40,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 01:45:40,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:45:41,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:41,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:45:41,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:45:41,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:41,644 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:45:41,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 43 [2022-11-03 01:45:42,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:42,093 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:45:42,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 19 [2022-11-03 01:45:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:42,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:45:42,529 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:42,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 267 [2022-11-03 01:45:42,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:45:42,580 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-03 01:45:42,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 285 treesize of output 291 [2022-11-03 01:45:44,316 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:44,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 92 [2022-11-03 01:45:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:45:44,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633106574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:45:45,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1663927868] [2022-11-03 01:45:45,002 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 01:45:45,002 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:45:45,003 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:45:45,003 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:45:45,003 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:45:45,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:45,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,152 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:45:45,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:45:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,360 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:45:45,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:45:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,401 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:45:45,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:45:45,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,466 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:45:45,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:45:45,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,656 INFO L356 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-03 01:45:45,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-03 01:45:45,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,707 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:45:45,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:45:45,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,797 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:45:45,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-03 01:45:45,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:45,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,002 INFO L356 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-03 01:45:46,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 272 [2022-11-03 01:45:46,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,080 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:45:46,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 284 treesize of output 261 [2022-11-03 01:45:46,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 229 [2022-11-03 01:45:46,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,316 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:45:46,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 254 treesize of output 232 [2022-11-03 01:45:46,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,450 INFO L356 Elim1Store]: treesize reduction 288, result has 11.9 percent of original size [2022-11-03 01:45:46,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 270 treesize of output 260 [2022-11-03 01:45:46,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,554 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:45:46,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 268 treesize of output 290 [2022-11-03 01:45:46,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:46,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,838 INFO L356 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-03 01:45:46,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 316 treesize of output 296 [2022-11-03 01:45:46,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,889 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:46,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 240 treesize of output 218 [2022-11-03 01:45:46,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:46,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:46,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:46,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 240 [2022-11-03 01:45:47,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:47,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:47,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:47,331 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:45:47,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 185 treesize of output 163 [2022-11-03 01:45:47,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:47,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:45:47,636 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:45:47,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 185 treesize of output 163 [2022-11-03 01:45:48,183 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:45:48,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:45:48,214 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:48,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:48,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:48,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:48,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:48,311 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:48,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:48,339 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:48,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:48,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:48,412 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:48,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:48,471 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:48,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:48,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:48,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:48,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:48,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:48,987 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:45:48,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:45:49,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:49,085 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:45:49,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:45:50,294 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:45:50,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:45:50,346 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:50,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:50,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:50,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:50,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:50,418 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:50,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:50,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:50,455 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:50,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:50,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:50,533 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:50,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:50,593 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:50,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:50,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:50,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:50,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:51,053 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:45:51,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:45:51,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:51,157 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:45:51,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:45:51,476 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:51,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:51,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:45:51,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:51,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:51,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:51,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:45:51,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:45:51,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:51,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:51,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:45:51,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:45:51,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:45:51,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:45:51,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:45:51,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,961 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:45:51,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-03 01:45:51,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:51,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 57 [2022-11-03 01:45:52,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:45:52,453 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:45:52,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:45:52,497 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:52,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:52,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:52,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:52,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:52,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:52,596 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:52,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:52,622 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:52,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:52,691 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:52,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:52,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:52,761 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:52,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:52,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:52,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:52,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:53,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:53,127 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:45:53,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:45:53,155 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:45:53,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:45:54,117 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:54,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:54,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:45:54,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:54,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:54,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:54,199 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:54,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:54,246 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:54,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:54,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:54,328 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:54,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:54,388 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:54,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:54,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:54,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:54,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:54,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:54,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:54,859 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:45:54,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:45:54,950 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:45:54,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:45:55,242 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:45:55,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:45:55,296 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:55,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:55,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:55,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:55,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:45:55,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:45:55,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:55,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:45:55,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:55,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:45:55,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:45:55,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:45:55,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:45:55,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:45:55,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,712 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:45:55,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-03 01:45:55,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:45:55,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 57 [2022-11-03 01:45:55,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:45:56,195 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:56,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:56,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:45:56,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:56,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:56,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:56,314 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:56,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:56,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:56,360 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:56,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:56,423 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:56,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:56,486 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:56,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:56,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:56,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:56,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:56,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:56,895 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:45:56,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:45:56,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:56,940 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:45:56,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:45:57,894 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:45:57,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:45:57,925 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:45:57,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:45:57,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:57,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:57,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:57,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:58,013 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:58,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:58,038 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:45:58,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:45:58,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:45:58,115 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:58,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:58,174 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:45:58,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:45:58,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:58,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 11 [2022-11-03 01:45:58,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:45:58,535 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:45:58,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:45:58,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:45:58,637 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:45:58,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:45:59,045 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:45:59,051 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:46:05,998 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18272#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= (select |#valid| |~#list~0.base|) 1) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~cursor~0#1.base|) 1)) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (<= |#NULL.base| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (or (not (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|)) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0))) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (<= |~#list~0.offset| 0))' at error location [2022-11-03 01:46:05,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:46:05,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:46:05,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 12] total 37 [2022-11-03 01:46:05,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055727497] [2022-11-03 01:46:05,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:46:05,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-03 01:46:05,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-03 01:46:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3448, Unknown=0, NotChecked=0, Total=3660 [2022-11-03 01:46:06,001 INFO L87 Difference]: Start difference. First operand 381 states and 528 transitions. Second operand has 38 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 38 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:46:09,053 INFO L93 Difference]: Finished difference Result 460 states and 604 transitions. [2022-11-03 01:46:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 01:46:09,054 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 38 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-03 01:46:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:46:09,056 INFO L225 Difference]: With dead ends: 460 [2022-11-03 01:46:09,056 INFO L226 Difference]: Without dead ends: 460 [2022-11-03 01:46:09,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=390, Invalid=5310, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 01:46:09,058 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 276 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 392 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:46:09,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1500 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1659 Invalid, 0 Unknown, 392 Unchecked, 1.5s Time] [2022-11-03 01:46:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-03 01:46:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 417. [2022-11-03 01:46:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 352 states have (on average 1.5539772727272727) internal successors, (547), 393 states have internal predecessors, (547), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 14 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 01:46:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 583 transitions. [2022-11-03 01:46:09,068 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 583 transitions. Word has length 32 [2022-11-03 01:46:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:46:09,068 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 583 transitions. [2022-11-03 01:46:09,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 38 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:46:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 583 transitions. [2022-11-03 01:46:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:46:09,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:46:09,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:46:09,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:46:09,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-03 01:46:09,283 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:46:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:46:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash -218787416, now seen corresponding path program 1 times [2022-11-03 01:46:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:46:09,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270238372] [2022-11-03 01:46:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:09,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:46:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:11,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:46:11,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270238372] [2022-11-03 01:46:11,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270238372] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:46:11,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40838491] [2022-11-03 01:46:11,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:46:11,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:46:11,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:46:11,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:46:11,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:46:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:46:11,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-03 01:46:11,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:46:11,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:46:11,578 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:46:11,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2022-11-03 01:46:11,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:11,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:12,471 INFO L356 Elim1Store]: treesize reduction 52, result has 54.8 percent of original size [2022-11-03 01:46:12,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 147 [2022-11-03 01:46:12,513 INFO L356 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-11-03 01:46:12,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 128 [2022-11-03 01:46:13,666 INFO L356 Elim1Store]: treesize reduction 33, result has 54.8 percent of original size [2022-11-03 01:46:13,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 136 treesize of output 127 [2022-11-03 01:46:13,733 INFO L356 Elim1Store]: treesize reduction 33, result has 54.8 percent of original size [2022-11-03 01:46:13,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 109 [2022-11-03 01:46:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:14,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:46:14,667 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:46:14,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 589 treesize of output 591 [2022-11-03 01:46:14,685 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-03 01:46:14,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1633 treesize of output 1553 [2022-11-03 01:46:14,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:46:15,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:46:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:46:16,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40838491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:46:16,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1991860100] [2022-11-03 01:46:16,551 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 01:46:16,551 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:46:16,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:46:16,552 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:46:16,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:46:16,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:46:16,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:16,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:16,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:16,745 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:46:16,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:46:16,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:16,880 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:46:16,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:46:16,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:16,918 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:46:16,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:46:16,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:16,982 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:46:16,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:46:17,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,150 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:46:17,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-03 01:46:17,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,238 INFO L356 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-03 01:46:17,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-03 01:46:17,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,275 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:46:17,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 224 [2022-11-03 01:46:17,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,414 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:46:17,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 274 treesize of output 261 [2022-11-03 01:46:17,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 233 [2022-11-03 01:46:17,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,527 INFO L356 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-03 01:46:17,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 278 treesize of output 264 [2022-11-03 01:46:17,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,783 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:46:17,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 278 treesize of output 272 [2022-11-03 01:46:17,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,847 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:46:17,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 258 treesize of output 236 [2022-11-03 01:46:17,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:17,973 INFO L356 Elim1Store]: treesize reduction 270, result has 17.4 percent of original size [2022-11-03 01:46:17,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 274 treesize of output 282 [2022-11-03 01:46:18,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:18,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:18,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:18,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:18,316 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:46:18,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 491 treesize of output 453 [2022-11-03 01:46:18,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:46:18,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:18,440 INFO L356 Elim1Store]: treesize reduction 238, result has 15.0 percent of original size [2022-11-03 01:46:18,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 518 treesize of output 500 [2022-11-03 01:46:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:18,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:46:18,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:18,534 INFO L356 Elim1Store]: treesize reduction 206, result has 10.0 percent of original size [2022-11-03 01:46:18,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 481 treesize of output 455 [2022-11-03 01:46:18,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:18,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:46:19,032 INFO L356 Elim1Store]: treesize reduction 143, result has 7.1 percent of original size [2022-11-03 01:46:19,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 462 treesize of output 355 [2022-11-03 01:46:19,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:19,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:46:19,560 INFO L356 Elim1Store]: treesize reduction 143, result has 7.1 percent of original size [2022-11-03 01:46:19,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 462 treesize of output 355 [2022-11-03 01:46:20,140 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:46:20,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 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 [2022-11-03 01:46:20,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:46:20,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 11 [2022-11-03 01:46:20,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:20,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:20,252 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:20,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:20,307 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:20,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:20,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:20,387 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:20,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:20,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:46:20,455 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:20,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:20,591 INFO L356 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-03 01:46:20,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-03 01:46:20,720 INFO L356 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-03 01:46:20,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-03 01:46:20,833 INFO L356 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2022-11-03 01:46:20,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2022-11-03 01:46:21,083 INFO L356 Elim1Store]: treesize reduction 176, result has 30.7 percent of original size [2022-11-03 01:46:21,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 243 treesize of output 236 [2022-11-03 01:46:21,360 INFO L356 Elim1Store]: treesize reduction 220, result has 13.4 percent of original size [2022-11-03 01:46:21,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 364 treesize of output 297 [2022-11-03 01:46:21,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:21,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-11-03 01:46:41,667 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:46:41,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:46:41,718 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:46:41,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:46:41,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:41,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:41,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:41,791 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:41,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:41,817 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:41,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:41,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:41,885 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:41,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:41,943 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:41,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:41,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:46:42,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:42,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:42,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:42,281 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:46:42,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:46:42,374 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:46:42,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:46:42,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:42,642 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:46:42,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:46:42,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:46:42,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:42,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:46:42,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:46:42,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:46:42,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:42,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:46:42,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:46:42,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:46:42,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:46:42,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:46:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:46:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:42,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:46:43,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:43,096 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:46:43,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 57 [2022-11-03 01:46:43,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:43,138 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:46:43,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-03 01:46:43,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:46:43,534 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:46:43,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:46:43,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:46:43,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:43,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:43,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:43,647 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:43,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:43,681 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:43,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:43,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:43,750 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:43,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:43,808 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:43,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:43,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:46:43,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:43,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:44,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:44,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:44,167 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:46:44,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:46:44,252 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:46:44,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:46:45,154 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:46:45,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:46:45,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:46:45,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:45,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:45,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:45,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:45,248 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:45,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:45,276 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:45,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:45,336 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:45,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:45,393 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:45,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:45,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:46:45,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:45,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:45,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:45,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:45,815 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:46:45,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:46:45,844 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:46:45,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:46:46,089 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:46:46,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:46:46,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:46:46,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:46:46,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:46,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:46:46,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:46:46,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:46:46,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:46,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:46:46,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:46:46,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:46:46,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:46:46,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:46:46,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:46:46,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,529 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:46:46,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-03 01:46:46,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:46:46,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 57 [2022-11-03 01:46:46,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:46:46,982 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:46:46,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:46:47,035 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:46:47,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:46:47,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 11 [2022-11-03 01:46:47,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:47,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:47,120 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:47,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:47,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:47,161 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:47,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:47,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:46:47,228 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:47,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:47,288 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:47,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:47,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:47,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:47,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:47,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:47,690 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:46:47,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:46:47,723 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:46:47,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:46:48,649 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:46:48,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:46:48,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:46:48,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:48,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:48,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:48,741 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:48,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:48,768 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:46:48,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:46:48,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:48,840 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:48,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:48,900 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:46:48,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:46:48,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:46:49,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:49,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:46:49,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:49,271 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:46:49,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:46:49,301 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:46:49,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:46:49,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:46:49,776 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:46:49,783 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:46:56,761 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19426#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= (select |#valid| |~#list~0.base|) 1) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (<= |#NULL.base| 0) (or (not (<= (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|) (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|))) (not (<= 0 (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|)))) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (or (not (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|)) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0))) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (<= |~#list~0.offset| 0))' at error location [2022-11-03 01:46:56,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:46:56,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:46:56,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 36 [2022-11-03 01:46:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935490681] [2022-11-03 01:46:56,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:46:56,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-03 01:46:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:46:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-03 01:46:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=3325, Unknown=0, NotChecked=0, Total=3540 [2022-11-03 01:46:56,764 INFO L87 Difference]: Start difference. First operand 417 states and 583 transitions. Second operand has 37 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 37 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:47:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:00,009 INFO L93 Difference]: Finished difference Result 460 states and 603 transitions. [2022-11-03 01:47:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 01:47:00,009 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 37 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-11-03 01:47:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:00,011 INFO L225 Difference]: With dead ends: 460 [2022-11-03 01:47:00,011 INFO L226 Difference]: Without dead ends: 460 [2022-11-03 01:47:00,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1366 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=387, Invalid=4869, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 01:47:00,013 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 236 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:00,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1939 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1368 Invalid, 0 Unknown, 190 Unchecked, 1.4s Time] [2022-11-03 01:47:00,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-03 01:47:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 418. [2022-11-03 01:47:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 353 states have (on average 1.5495750708215297) internal successors, (547), 394 states have internal predecessors, (547), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 14 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 01:47:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 583 transitions. [2022-11-03 01:47:00,023 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 583 transitions. Word has length 32 [2022-11-03 01:47:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:00,023 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 583 transitions. [2022-11-03 01:47:00,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 37 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:47:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 583 transitions. [2022-11-03 01:47:00,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:47:00,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:00,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:00,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:00,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:00,247 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:47:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1992691982, now seen corresponding path program 1 times [2022-11-03 01:47:00,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:00,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526874621] [2022-11-03 01:47:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:00,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:02,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:02,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526874621] [2022-11-03 01:47:02,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526874621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:02,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144280121] [2022-11-03 01:47:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:02,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:02,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:02,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:02,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:47:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:02,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-03 01:47:02,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:02,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:02,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2022-11-03 01:47:02,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:02,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2022-11-03 01:47:03,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:03,027 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:47:03,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 47 [2022-11-03 01:47:03,038 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:47:03,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 01:47:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:03,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:03,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144280121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:03,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:47:03,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 28 [2022-11-03 01:47:03,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761456137] [2022-11-03 01:47:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:03,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:47:03,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:03,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:47:03,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-11-03 01:47:03,103 INFO L87 Difference]: Start difference. First operand 418 states and 583 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:04,139 INFO L93 Difference]: Finished difference Result 627 states and 803 transitions. [2022-11-03 01:47:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 01:47:04,140 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-03 01:47:04,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:04,143 INFO L225 Difference]: With dead ends: 627 [2022-11-03 01:47:04,143 INFO L226 Difference]: Without dead ends: 627 [2022-11-03 01:47:04,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 01:47:04,144 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 743 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:04,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 843 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:47:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-03 01:47:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 418. [2022-11-03 01:47:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 353 states have (on average 1.5495750708215297) internal successors, (547), 394 states have internal predecessors, (547), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 14 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 01:47:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 583 transitions. [2022-11-03 01:47:04,169 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 583 transitions. Word has length 32 [2022-11-03 01:47:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:04,170 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 583 transitions. [2022-11-03 01:47:04,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 583 transitions. [2022-11-03 01:47:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:47:04,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:04,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:04,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:04,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:04,384 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:47:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1992693329, now seen corresponding path program 1 times [2022-11-03 01:47:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:04,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655237035] [2022-11-03 01:47:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:06,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:06,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655237035] [2022-11-03 01:47:06,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655237035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544498830] [2022-11-03 01:47:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:06,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:06,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:06,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:06,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:47:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:06,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-03 01:47:06,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:06,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:47:06,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:47:06,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:47:06,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:07,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:07,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 35 [2022-11-03 01:47:07,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:07,333 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:47:07,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 19 [2022-11-03 01:47:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:07,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:47:07,787 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:47:07,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 267 [2022-11-03 01:47:07,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:47:07,845 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-03 01:47:07,846 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 290 treesize of output 296 [2022-11-03 01:47:09,431 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:47:09,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 78 [2022-11-03 01:47:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:09,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544498830] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:09,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:47:09,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 39 [2022-11-03 01:47:09,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349034607] [2022-11-03 01:47:09,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:09,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 01:47:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:09,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 01:47:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1437, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 01:47:09,908 INFO L87 Difference]: Start difference. First operand 418 states and 583 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:11,665 INFO L93 Difference]: Finished difference Result 631 states and 851 transitions. [2022-11-03 01:47:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 01:47:11,666 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-03 01:47:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:11,670 INFO L225 Difference]: With dead ends: 631 [2022-11-03 01:47:11,670 INFO L226 Difference]: Without dead ends: 631 [2022-11-03 01:47:11,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=209, Invalid=2443, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 01:47:11,672 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 324 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:11,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 960 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 839 Invalid, 0 Unknown, 408 Unchecked, 0.8s Time] [2022-11-03 01:47:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-11-03 01:47:11,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 478. [2022-11-03 01:47:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 407 states have (on average 1.538083538083538) internal successors, (626), 450 states have internal predecessors, (626), 22 states have call successors, (22), 11 states have call predecessors, (22), 11 states have return successors, (22), 16 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-03 01:47:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 670 transitions. [2022-11-03 01:47:11,687 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 670 transitions. Word has length 32 [2022-11-03 01:47:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:11,687 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 670 transitions. [2022-11-03 01:47:11,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 670 transitions. [2022-11-03 01:47:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 01:47:11,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:11,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:11,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-03 01:47:11,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:11,889 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:47:11,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1992693328, now seen corresponding path program 1 times [2022-11-03 01:47:11,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:11,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672905979] [2022-11-03 01:47:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:11,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:14,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:14,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672905979] [2022-11-03 01:47:14,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672905979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:14,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907207443] [2022-11-03 01:47:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:14,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:14,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:14,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:14,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:47:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:14,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 01:47:14,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:15,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:47:15,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:15,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:15,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:15,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 35 [2022-11-03 01:47:15,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:15,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:47:16,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:16,018 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:47:16,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 19 [2022-11-03 01:47:16,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:16,033 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:47:16,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 13 [2022-11-03 01:47:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:16,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:16,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907207443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:16,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:47:16,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 30 [2022-11-03 01:47:16,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943657771] [2022-11-03 01:47:16,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:16,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 01:47:16,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:16,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 01:47:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-03 01:47:16,101 INFO L87 Difference]: Start difference. First operand 478 states and 670 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:18,309 INFO L93 Difference]: Finished difference Result 696 states and 898 transitions. [2022-11-03 01:47:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 01:47:18,311 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-11-03 01:47:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:18,314 INFO L225 Difference]: With dead ends: 696 [2022-11-03 01:47:18,314 INFO L226 Difference]: Without dead ends: 696 [2022-11-03 01:47:18,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=316, Invalid=1846, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 01:47:18,316 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 750 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:18,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1276 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 01:47:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-11-03 01:47:18,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 534. [2022-11-03 01:47:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 457 states have (on average 1.549234135667396) internal successors, (708), 502 states have internal predecessors, (708), 26 states have call successors, (26), 13 states have call predecessors, (26), 13 states have return successors, (26), 18 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-03 01:47:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 760 transitions. [2022-11-03 01:47:18,333 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 760 transitions. Word has length 32 [2022-11-03 01:47:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:18,334 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 760 transitions. [2022-11-03 01:47:18,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:18,334 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 760 transitions. [2022-11-03 01:47:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:47:18,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:18,335 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:18,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-03 01:47:18,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:18,560 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:47:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1399931815, now seen corresponding path program 1 times [2022-11-03 01:47:18,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:18,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458612581] [2022-11-03 01:47:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:18,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:47:18,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458612581] [2022-11-03 01:47:18,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458612581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115941986] [2022-11-03 01:47:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:18,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:18,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:18,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:18,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 01:47:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:18,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 01:47:18,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:18,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:47:19,003 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 01:47:19,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 01:47:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:47:19,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115941986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:47:19,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [149129913] [2022-11-03 01:47:19,031 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-03 01:47:19,032 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:47:19,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:47:19,032 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:47:19,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:47:19,867 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 54 for LOIs [2022-11-03 01:47:19,881 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:47:22,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [149129913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:22,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:47:22,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 5, 5] total 23 [2022-11-03 01:47:22,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722821791] [2022-11-03 01:47:22,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:22,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:47:22,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:22,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:47:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:47:22,359 INFO L87 Difference]: Start difference. First operand 534 states and 760 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:22,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:22,848 INFO L93 Difference]: Finished difference Result 369 states and 505 transitions. [2022-11-03 01:47:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:47:22,848 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-03 01:47:22,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:22,850 INFO L225 Difference]: With dead ends: 369 [2022-11-03 01:47:22,850 INFO L226 Difference]: Without dead ends: 369 [2022-11-03 01:47:22,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:47:22,851 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 20 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:22,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 191 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:47:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-03 01:47:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-11-03 01:47:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 304 states have (on average 1.542763157894737) internal successors, (469), 347 states have internal predecessors, (469), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 12 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 01:47:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 505 transitions. [2022-11-03 01:47:22,862 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 505 transitions. Word has length 34 [2022-11-03 01:47:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:22,862 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 505 transitions. [2022-11-03 01:47:22,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 505 transitions. [2022-11-03 01:47:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 01:47:22,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:22,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:22,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:23,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:23,087 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:47:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash -140435571, now seen corresponding path program 1 times [2022-11-03 01:47:23,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:23,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860488529] [2022-11-03 01:47:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:23,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:24,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:24,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860488529] [2022-11-03 01:47:24,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860488529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:24,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:24,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 01:47:24,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086406175] [2022-11-03 01:47:24,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:24,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:47:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:47:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:47:24,247 INFO L87 Difference]: Start difference. First operand 369 states and 505 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:25,648 INFO L93 Difference]: Finished difference Result 481 states and 610 transitions. [2022-11-03 01:47:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:47:25,649 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-11-03 01:47:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:25,651 INFO L225 Difference]: With dead ends: 481 [2022-11-03 01:47:25,651 INFO L226 Difference]: Without dead ends: 481 [2022-11-03 01:47:25,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2022-11-03 01:47:25,652 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 912 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:25,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 715 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:47:25,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-03 01:47:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 369. [2022-11-03 01:47:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 304 states have (on average 1.5328947368421053) internal successors, (466), 347 states have internal predecessors, (466), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 12 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 01:47:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 502 transitions. [2022-11-03 01:47:25,662 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 502 transitions. Word has length 33 [2022-11-03 01:47:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:25,663 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 502 transitions. [2022-11-03 01:47:25,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:47:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 502 transitions. [2022-11-03 01:47:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:47:25,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:25,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:25,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-03 01:47:25,664 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:47:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash -858528352, now seen corresponding path program 1 times [2022-11-03 01:47:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:25,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038662850] [2022-11-03 01:47:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:25,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:47:25,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:25,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038662850] [2022-11-03 01:47:25,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038662850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:25,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787205660] [2022-11-03 01:47:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:25,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:25,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:25,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 01:47:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:26,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:47:26,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 01:47:26,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:26,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787205660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:26,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:47:26,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-11-03 01:47:26,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128654520] [2022-11-03 01:47:26,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:47:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:47:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:47:26,167 INFO L87 Difference]: Start difference. First operand 369 states and 502 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:47:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:26,237 INFO L93 Difference]: Finished difference Result 490 states and 652 transitions. [2022-11-03 01:47:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:47:26,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-11-03 01:47:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:26,239 INFO L225 Difference]: With dead ends: 490 [2022-11-03 01:47:26,240 INFO L226 Difference]: Without dead ends: 490 [2022-11-03 01:47:26,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:47:26,240 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 186 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:26,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 211 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:47:26,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-03 01:47:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 368. [2022-11-03 01:47:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 304 states have (on average 1.513157894736842) internal successors, (460), 346 states have internal predecessors, (460), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 12 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-03 01:47:26,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 496 transitions. [2022-11-03 01:47:26,252 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 496 transitions. Word has length 34 [2022-11-03 01:47:26,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:26,252 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 496 transitions. [2022-11-03 01:47:26,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:47:26,252 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 496 transitions. [2022-11-03 01:47:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:47:26,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:26,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:26,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:26,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:26,467 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:47:26,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash -511271089, now seen corresponding path program 1 times [2022-11-03 01:47:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:26,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314998355] [2022-11-03 01:47:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:47:29,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:29,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314998355] [2022-11-03 01:47:29,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314998355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:29,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124511384] [2022-11-03 01:47:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:29,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:29,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:29,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:29,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 01:47:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:29,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-03 01:47:29,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:29,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:47:29,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:29,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:29,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 35 [2022-11-03 01:47:30,449 INFO L356 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2022-11-03 01:47:30,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 37 [2022-11-03 01:47:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:30,467 INFO L356 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2022-11-03 01:47:30,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 19 [2022-11-03 01:47:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:30,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:47:30,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124511384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:30,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18187904] [2022-11-03 01:47:30,830 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-03 01:47:30,830 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:47:30,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:47:30,831 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:47:30,831 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:47:30,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:47:30,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:30,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:30,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:30,971 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:47:30,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:47:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,099 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:47:31,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:47:31,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,165 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:47:31,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:47:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,199 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:47:31,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 224 [2022-11-03 01:47:31,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,329 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:47:31,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 259 treesize of output 258 [2022-11-03 01:47:31,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,371 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:47:31,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 224 [2022-11-03 01:47:31,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,432 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:47:31,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 261 treesize of output 250 [2022-11-03 01:47:31,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 233 [2022-11-03 01:47:31,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,634 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:47:31,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 276 treesize of output 253 [2022-11-03 01:47:31,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,694 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:47:31,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 262 treesize of output 249 [2022-11-03 01:47:31,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,851 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:47:31,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-03 01:47:31,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:31,970 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:47:31,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 258 treesize of output 278 [2022-11-03 01:47:31,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:32,055 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:47:32,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 248 treesize of output 252 [2022-11-03 01:47:32,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:47:32,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:32,328 INFO L356 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-03 01:47:32,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 308 treesize of output 286 [2022-11-03 01:47:32,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:47:32,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:32,422 INFO L356 Elim1Store]: treesize reduction 257, result has 8.2 percent of original size [2022-11-03 01:47:32,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 302 treesize of output 279 [2022-11-03 01:47:32,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:32,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:32,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:32,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:32,456 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:47:32,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 252 treesize of output 230 [2022-11-03 01:47:32,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:32,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:47:32,793 INFO L356 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-03 01:47:32,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 215 treesize of output 188 [2022-11-03 01:47:33,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:33,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:47:33,058 INFO L356 Elim1Store]: treesize reduction 125, result has 8.1 percent of original size [2022-11-03 01:47:33,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 203 treesize of output 170 [2022-11-03 01:47:33,464 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:47:33,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:47:33,512 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:47:33,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:47:33,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:33,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:47:33,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:47:33,606 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:47:33,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:47:33,644 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:47:33,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:47:33,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:33,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:47:33,746 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:47:33,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:47:33,811 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:47:33,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:47:34,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:34,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:34,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:34,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:34,319 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:47:34,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:47:34,345 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:47:34,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:47:34,823 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:47:34,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:47:34,854 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:47:34,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:47:34,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:34,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:47:34,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:47:34,954 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:47:34,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:47:34,986 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:47:34,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:47:35,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:35,081 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:47:35,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:47:35,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:47:35,170 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:47:35,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:47:35,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:35,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:35,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:35,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:35,402 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:47:35,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:47:35,433 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:47:35,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:47:35,653 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:47:35,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:47:35,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:47:35,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:47:35,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:35,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:47:35,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:35,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:47:35,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:47:35,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:35,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:47:35,810 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:47:35,817 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:47:43,023 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27273#(and (<= |~#list~0.base| 3) (<= |ULTIMATE.start_main_#t~ret23#1| 2147483647) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (not (= (select |#valid| |ULTIMATE.start_create_item_~link#1.base|) 1)) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 0 (+ |ULTIMATE.start_main_#t~ret23#1| 2147483648)) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2022-11-03 01:47:43,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:47:43,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:47:43,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 35 [2022-11-03 01:47:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216749391] [2022-11-03 01:47:43,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:47:43,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 01:47:43,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 01:47:43,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=3269, Unknown=0, NotChecked=0, Total=3540 [2022-11-03 01:47:43,026 INFO L87 Difference]: Start difference. First operand 368 states and 496 transitions. Second operand has 36 states, 32 states have (on average 1.875) internal successors, (60), 33 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:47:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:52,685 INFO L93 Difference]: Finished difference Result 1196 states and 1514 transitions. [2022-11-03 01:47:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-03 01:47:52,685 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.875) internal successors, (60), 33 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-03 01:47:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:52,688 INFO L225 Difference]: With dead ends: 1196 [2022-11-03 01:47:52,688 INFO L226 Difference]: Without dead ends: 1196 [2022-11-03 01:47:52,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1137, Invalid=10419, Unknown=0, NotChecked=0, Total=11556 [2022-11-03 01:47:52,692 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1692 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 5248 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 6118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 5248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 570 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:52,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 4366 Invalid, 6118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 5248 Invalid, 0 Unknown, 570 Unchecked, 4.6s Time] [2022-11-03 01:47:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-11-03 01:47:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 647. [2022-11-03 01:47:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 557 states have (on average 1.5206463195691202) internal successors, (847), 605 states have internal predecessors, (847), 34 states have call successors, (34), 19 states have call predecessors, (34), 19 states have return successors, (34), 22 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-03 01:47:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 915 transitions. [2022-11-03 01:47:52,720 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 915 transitions. Word has length 34 [2022-11-03 01:47:52,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:52,720 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 915 transitions. [2022-11-03 01:47:52,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.875) internal successors, (60), 33 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:47:52,721 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 915 transitions. [2022-11-03 01:47:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:47:52,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:52,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:52,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:52,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-03 01:47:52,935 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:47:52,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash -511271088, now seen corresponding path program 1 times [2022-11-03 01:47:52,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:52,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776916038] [2022-11-03 01:47:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:52,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:47:55,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:55,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776916038] [2022-11-03 01:47:55,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776916038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:55,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798698126] [2022-11-03 01:47:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:55,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:55,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:55,831 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:55,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 01:47:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:56,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-03 01:47:56,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:56,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:47:56,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:47:56,310 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:47:56,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2022-11-03 01:47:56,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:56,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:47:57,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:57,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 60 [2022-11-03 01:47:57,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:57,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:47:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:58,166 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:47:58,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 13 [2022-11-03 01:47:58,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:58,189 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:47:58,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 43 [2022-11-03 01:47:58,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:47:58,243 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 01:47:58,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-03 01:47:58,253 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 01:47:58,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 01:47:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:47:58,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:07,110 WARN L234 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:09,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798698126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:09,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137276970] [2022-11-03 01:48:09,467 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-03 01:48:09,468 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:09,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:09,468 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:09,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:09,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:48:09,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:09,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:09,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:09,641 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:48:09,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:48:09,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:09,802 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:48:09,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:48:09,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:09,894 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:48:09,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:48:09,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:09,939 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:48:09,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:48:10,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,092 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:48:10,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 267 treesize of output 258 [2022-11-03 01:48:10,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,149 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:48:10,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 224 [2022-11-03 01:48:10,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,231 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:48:10,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 261 treesize of output 250 [2022-11-03 01:48:10,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,408 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:48:10,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 276 treesize of output 253 [2022-11-03 01:48:10,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 233 [2022-11-03 01:48:10,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,523 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:48:10,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 274 treesize of output 261 [2022-11-03 01:48:10,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:10,870 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:48:10,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 278 treesize of output 290 [2022-11-03 01:48:10,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,030 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:48:11,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 260 treesize of output 252 [2022-11-03 01:48:11,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,093 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:48:11,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-03 01:48:11,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:48:11,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,461 INFO L356 Elim1Store]: treesize reduction 206, result has 10.0 percent of original size [2022-11-03 01:48:11,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 511 treesize of output 467 [2022-11-03 01:48:11,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,514 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:48:11,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 423 treesize of output 385 [2022-11-03 01:48:11,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:48:11,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:11,646 INFO L356 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-03 01:48:11,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 465 treesize of output 443 [2022-11-03 01:48:12,018 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:48:12,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:48:12,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:48:12,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:48:12,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:48:12,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:12,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:12,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:12,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:48:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:12,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:48:12,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:48:12,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:12,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:12,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:12,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:48:12,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:12,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:12,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:12,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:48:12,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:48:12,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:12,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:48:12,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:12,479 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:48:12,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:48:12,516 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:48:12,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:48:13,026 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:48:13,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:48:13,090 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:48:13,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:48:13,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:13,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:48:13,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:48:13,214 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:48:13,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:48:13,256 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:48:13,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:48:13,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:13,370 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:48:13,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:48:13,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:48:13,497 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:48:13,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:48:13,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:48:13,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:13,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:48:13,766 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:48:13,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:48:13,820 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:48:13,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:48:13,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:14,082 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:48:14,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:48:14,127 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:48:14,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:48:14,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:48:14,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:14,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:48:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:14,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:48:14,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:48:14,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:14,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:48:14,303 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:48:14,312 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:22,005 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29400#(and (<= |~#list~0.base| 3) (<= |ULTIMATE.start_main_#t~ret23#1| 2147483647) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (or (not (<= (+ (* |ULTIMATE.start_create_item_~term_field~0#1| 4) |ULTIMATE.start_create_item_~link#1.offset| 4) (select |#length| |ULTIMATE.start_create_item_~link#1.base|))) (not (<= 0 (+ (* |ULTIMATE.start_create_item_~term_field~0#1| 4) |ULTIMATE.start_create_item_~link#1.offset|)))) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 0 (+ |ULTIMATE.start_main_#t~ret23#1| 2147483648)) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2022-11-03 01:48:22,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:48:22,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:48:22,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2022-11-03 01:48:22,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700592992] [2022-11-03 01:48:22,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:48:22,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 01:48:22,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:22,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 01:48:22,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=3102, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 01:48:22,009 INFO L87 Difference]: Start difference. First operand 647 states and 915 transitions. Second operand has 33 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:48:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:54,875 INFO L93 Difference]: Finished difference Result 2589 states and 3560 transitions. [2022-11-03 01:48:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-03 01:48:54,875 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-03 01:48:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:54,886 INFO L225 Difference]: With dead ends: 2589 [2022-11-03 01:48:54,887 INFO L226 Difference]: Without dead ends: 2589 [2022-11-03 01:48:54,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6331 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=1870, Invalid=17590, Unknown=0, NotChecked=0, Total=19460 [2022-11-03 01:48:54,891 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 3958 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 4937 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3960 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 4937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:54,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3960 Valid, 2853 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 4937 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 01:48:54,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2022-11-03 01:48:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 738. [2022-11-03 01:48:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 639 states have (on average 1.516431924882629) internal successors, (969), 687 states have internal predecessors, (969), 40 states have call successors, (40), 22 states have call predecessors, (40), 22 states have return successors, (40), 28 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-03 01:48:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1049 transitions. [2022-11-03 01:48:54,928 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1049 transitions. Word has length 34 [2022-11-03 01:48:54,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:54,928 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1049 transitions. [2022-11-03 01:48:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:48:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1049 transitions. [2022-11-03 01:48:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:48:54,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:54,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:54,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:55,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-03 01:48:55,147 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:48:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash -132836009, now seen corresponding path program 1 times [2022-11-03 01:48:55,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:55,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888525028] [2022-11-03 01:48:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:48:57,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:57,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888525028] [2022-11-03 01:48:57,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888525028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:57,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467909130] [2022-11-03 01:48:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:57,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:48:57,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:57,528 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:48:57,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 01:48:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:57,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-03 01:48:57,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:57,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:48:57,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:48:57,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:48:58,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:48:58,613 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:48:58,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 43 [2022-11-03 01:48:59,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:59,265 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:48:59,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 19 [2022-11-03 01:48:59,288 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:48:59,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:48:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:48:59,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:48:59,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467909130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:48:59,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [668332115] [2022-11-03 01:48:59,801 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-03 01:48:59,801 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:48:59,802 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:48:59,802 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:48:59,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:48:59,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:48:59,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:59,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:59,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:48:59,940 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:48:59,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:49:00,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,118 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:49:00,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:49:00,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,201 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:49:00,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:49:00,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,239 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:49:00,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:49:00,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,417 INFO L356 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-03 01:49:00,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-03 01:49:00,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,467 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:49:00,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:49:00,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,544 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:49:00,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 267 treesize of output 258 [2022-11-03 01:49:00,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,706 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:49:00,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 274 treesize of output 261 [2022-11-03 01:49:00,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 233 [2022-11-03 01:49:00,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:00,812 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:49:00,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 274 treesize of output 253 [2022-11-03 01:49:00,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:01,087 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:49:01,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 278 treesize of output 290 [2022-11-03 01:49:01,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:01,214 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:49:01,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 258 treesize of output 252 [2022-11-03 01:49:01,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:01,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:01,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:01,265 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:49:01,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 238 treesize of output 216 [2022-11-03 01:49:01,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 01:49:01,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 01:49:01,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:01,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:01,794 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 01:49:01,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 138 treesize of output 154 [2022-11-03 01:49:01,904 INFO L356 Elim1Store]: treesize reduction 71, result has 33.0 percent of original size [2022-11-03 01:49:01,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 134 treesize of output 159 [2022-11-03 01:49:02,118 INFO L356 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-11-03 01:49:02,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:02,247 INFO L356 Elim1Store]: treesize reduction 152, result has 30.3 percent of original size [2022-11-03 01:49:02,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 177 [2022-11-03 01:49:02,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:02,397 INFO L356 Elim1Store]: treesize reduction 68, result has 40.9 percent of original size [2022-11-03 01:49:02,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 64 [2022-11-03 01:49:02,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:02,568 INFO L356 Elim1Store]: treesize reduction 240, result has 24.3 percent of original size [2022-11-03 01:49:02,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 167 treesize of output 191 [2022-11-03 01:49:02,822 INFO L356 Elim1Store]: treesize reduction 354, result has 19.2 percent of original size [2022-11-03 01:49:02,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 190 [2022-11-03 01:49:02,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:49:02,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:02,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:02,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:02,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:02,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:02,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:49:02,920 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:49:02,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 77 treesize of output 67 [2022-11-03 01:49:03,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:03,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:03,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:03,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:03,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:03,127 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:49:03,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:49:03,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:03,173 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:49:03,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:49:03,616 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:49:03,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:49:03,656 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:49:03,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:49:03,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:03,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:03,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:03,775 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:49:03,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:49:03,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:03,825 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:49:03,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:49:03,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:49:03,957 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:49:03,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:49:04,045 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:49:04,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:49:04,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:04,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:04,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:04,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:04,445 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:49:04,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:49:04,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:04,493 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:49:04,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:49:04,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:04,667 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:49:04,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:49:04,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:49:04,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:04,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:04,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:04,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:04,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:04,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:49:04,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:04,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:49:04,846 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:49:04,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:49:11,633 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33073#(and (<= |~#list~0.base| 3) (<= |ULTIMATE.start_main_#t~ret23#1| 2147483647) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= |#NULL.base| 0) (not (= (select |#valid| |ULTIMATE.start_create_item_~link#1.base|) 1)) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 0 (+ |ULTIMATE.start_main_#t~ret23#1| 2147483648)) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2022-11-03 01:49:11,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:49:11,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:49:11,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 31 [2022-11-03 01:49:11,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114800320] [2022-11-03 01:49:11,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:49:11,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 01:49:11,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 01:49:11,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2861, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 01:49:11,636 INFO L87 Difference]: Start difference. First operand 738 states and 1049 transitions. Second operand has 32 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:49:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:14,214 INFO L93 Difference]: Finished difference Result 760 states and 1075 transitions. [2022-11-03 01:49:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 01:49:14,214 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-03 01:49:14,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:14,216 INFO L225 Difference]: With dead ends: 760 [2022-11-03 01:49:14,216 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 01:49:14,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=348, Invalid=4344, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 01:49:14,217 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 67 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 465 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:14,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1457 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1034 Invalid, 0 Unknown, 465 Unchecked, 1.2s Time] [2022-11-03 01:49:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 01:49:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 756. [2022-11-03 01:49:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 655 states have (on average 1.5114503816793894) internal successors, (990), 703 states have internal predecessors, (990), 41 states have call successors, (41), 23 states have call predecessors, (41), 23 states have return successors, (41), 29 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-03 01:49:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1072 transitions. [2022-11-03 01:49:14,237 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1072 transitions. Word has length 34 [2022-11-03 01:49:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:14,237 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 1072 transitions. [2022-11-03 01:49:14,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 30 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:49:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1072 transitions. [2022-11-03 01:49:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:49:14,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:14,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:14,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-03 01:49:14,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:14,463 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:49:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash -132836008, now seen corresponding path program 1 times [2022-11-03 01:49:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:14,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705769998] [2022-11-03 01:49:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:14,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:49:17,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705769998] [2022-11-03 01:49:17,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705769998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738622600] [2022-11-03 01:49:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:17,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:17,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:17,263 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:17,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 01:49:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:17,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-03 01:49:17,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:17,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:49:17,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:49:18,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:18,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:18,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:18,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:18,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:18,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 40 [2022-11-03 01:49:19,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:19,461 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:49:19,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 24 [2022-11-03 01:49:19,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:19,482 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:49:19,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 13 [2022-11-03 01:49:19,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:19,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 14 [2022-11-03 01:49:19,537 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 01:49:19,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 01:49:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:49:19,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:49:28,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738622600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:28,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1680405211] [2022-11-03 01:49:28,745 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-03 01:49:28,746 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:49:28,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:49:28,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:49:28,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:49:28,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:49:28,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:28,937 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:49:28,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:49:29,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,094 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:49:29,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:49:29,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,187 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:49:29,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:49:29,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,232 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:49:29,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:49:29,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,419 INFO L356 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-03 01:49:29,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-03 01:49:29,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,513 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:49:29,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 267 treesize of output 258 [2022-11-03 01:49:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,559 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:49:29,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:49:29,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,736 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:49:29,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 282 treesize of output 261 [2022-11-03 01:49:29,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 233 [2022-11-03 01:49:29,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:29,854 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:49:29,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 276 treesize of output 253 [2022-11-03 01:49:30,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,130 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:49:30,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 280 treesize of output 272 [2022-11-03 01:49:30,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,276 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:49:30,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 266 treesize of output 278 [2022-11-03 01:49:30,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,338 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:49:30,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 234 treesize of output 212 [2022-11-03 01:49:30,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:30,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 01:49:30,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 01:49:30,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:30,954 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-03 01:49:30,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 138 treesize of output 154 [2022-11-03 01:49:31,068 INFO L356 Elim1Store]: treesize reduction 71, result has 33.0 percent of original size [2022-11-03 01:49:31,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 134 treesize of output 159 [2022-11-03 01:49:31,333 INFO L356 Elim1Store]: treesize reduction 152, result has 30.3 percent of original size [2022-11-03 01:49:31,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 177 [2022-11-03 01:49:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:31,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:31,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:31,586 INFO L356 Elim1Store]: treesize reduction 240, result has 24.3 percent of original size [2022-11-03 01:49:31,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 167 treesize of output 191 [2022-11-03 01:49:31,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:31,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:49:31,691 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-03 01:49:31,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 44 [2022-11-03 01:49:31,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:31,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:49:31,917 INFO L356 Elim1Store]: treesize reduction 84, result has 56.3 percent of original size [2022-11-03 01:49:31,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 121 [2022-11-03 01:49:32,170 INFO L356 Elim1Store]: treesize reduction 354, result has 19.2 percent of original size [2022-11-03 01:49:32,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 190 [2022-11-03 01:49:32,241 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-03 01:49:32,464 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-11-03 01:49:33,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 11 [2022-11-03 01:49:33,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:33,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:33,362 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:49:33,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:49:33,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:33,405 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:49:33,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:49:33,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:33,878 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:49:33,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:49:33,945 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:49:33,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:49:33,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:33,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:34,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:34,062 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:49:34,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:49:34,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:34,134 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:49:34,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2022-11-03 01:49:34,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:49:34,257 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:49:34,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:49:34,354 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:49:34,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 75 [2022-11-03 01:49:34,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:34,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:49:34,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:34,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:34,759 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:49:34,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:49:34,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:34,801 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:49:34,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:49:34,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:35,024 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:49:35,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:49:35,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:49:35,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:35,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:35,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:49:35,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:35,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:49:35,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:35,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:49:35,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:49:35,228 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:49:35,235 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:49:43,049 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34798#(and (<= |~#list~0.base| 3) (<= |ULTIMATE.start_main_#t~ret23#1| 2147483647) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_append_one_#in~to#1| 2147483647) (<= |ULTIMATE.start_create_item_#in~at#1| 2147483647) (<= |ULTIMATE.start_append_one_~to#1| 2147483647) (<= |ULTIMATE.start_append_one_~list#1.base| 3) (<= |ULTIMATE.start_append_one_#in~list#1.offset| 0) (<= 0 |ULTIMATE.start_append_one_~list#1.offset|) (<= |ULTIMATE.start_append_one_~list#1.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_append_one_~to#1|)) (<= 0 |ULTIMATE.start_create_item_~head~0#1.offset|) (or (not (= |ULTIMATE.start_create_item_~link#1.offset| 0)) (not (= |ULTIMATE.start_create_item_~link#1.base| 0))) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_create_item_~at#1| 2147483647) (<= 0 (+ |ULTIMATE.start_append_one_#in~to#1| 2147483648)) (<= 0 |ULTIMATE.start_append_one_#in~list#1.offset|) (<= 3 |ULTIMATE.start_append_one_~list#1.base|) (<= 0 |ULTIMATE.start_create_item_~item~0#1.offset|) (<= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_create_item_~at#1| 2147483648)) (or (not (<= (+ (* |ULTIMATE.start_create_item_~term_field~0#1| 4) |ULTIMATE.start_create_item_~link#1.offset| 4) (select |#length| |ULTIMATE.start_create_item_~link#1.base|))) (not (<= 0 (+ (* |ULTIMATE.start_create_item_~term_field~0#1| 4) |ULTIMATE.start_create_item_~link#1.offset|)))) (<= 0 (+ |ULTIMATE.start_create_item_#in~at#1| 2147483648)) (<= |ULTIMATE.start_create_item_~item~0#1.offset| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_create_item_~head~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_append_one_#in~list#1.base| 3) (<= |~#list~0.offset| 0) (<= 0 (+ |ULTIMATE.start_main_#t~ret23#1| 2147483648)) (<= 3 |ULTIMATE.start_append_one_#in~list#1.base|))' at error location [2022-11-03 01:49:43,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:49:43,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:49:43,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 33 [2022-11-03 01:49:43,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023287824] [2022-11-03 01:49:43,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:49:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 01:49:43,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 01:49:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=3108, Unknown=0, NotChecked=0, Total=3422 [2022-11-03 01:49:43,051 INFO L87 Difference]: Start difference. First operand 756 states and 1072 transitions. Second operand has 34 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:50:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:05,712 INFO L93 Difference]: Finished difference Result 1794 states and 2543 transitions. [2022-11-03 01:50:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-03 01:50:05,712 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2022-11-03 01:50:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:05,716 INFO L225 Difference]: With dead ends: 1794 [2022-11-03 01:50:05,716 INFO L226 Difference]: Without dead ends: 1794 [2022-11-03 01:50:05,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2838 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=1434, Invalid=8868, Unknown=0, NotChecked=0, Total=10302 [2022-11-03 01:50:05,718 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1657 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 5663 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 5663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:05,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 3022 Invalid, 5921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 5663 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 01:50:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-11-03 01:50:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 804. [2022-11-03 01:50:05,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 697 states have (on average 1.502152080344333) internal successors, (1047), 745 states have internal predecessors, (1047), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 33 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:50:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1137 transitions. [2022-11-03 01:50:05,748 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1137 transitions. Word has length 34 [2022-11-03 01:50:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:05,749 INFO L495 AbstractCegarLoop]: Abstraction has 804 states and 1137 transitions. [2022-11-03 01:50:05,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 29 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:50:05,749 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1137 transitions. [2022-11-03 01:50:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:50:05,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:05,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:05,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:05,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-03 01:50:05,963 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:50:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash 198722594, now seen corresponding path program 1 times [2022-11-03 01:50:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:05,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458410738] [2022-11-03 01:50:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:05,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:08,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:08,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458410738] [2022-11-03 01:50:08,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458410738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:08,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:08,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-03 01:50:08,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646002947] [2022-11-03 01:50:08,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 01:50:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 01:50:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:50:08,068 INFO L87 Difference]: Start difference. First operand 804 states and 1137 transitions. Second operand has 16 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:50:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:11,892 INFO L93 Difference]: Finished difference Result 963 states and 1322 transitions. [2022-11-03 01:50:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 01:50:11,892 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-03 01:50:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:11,895 INFO L225 Difference]: With dead ends: 963 [2022-11-03 01:50:11,895 INFO L226 Difference]: Without dead ends: 963 [2022-11-03 01:50:11,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=272, Invalid=988, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 01:50:11,895 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 1486 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:11,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 582 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:50:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-03 01:50:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 812. [2022-11-03 01:50:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 705 states have (on average 1.500709219858156) internal successors, (1058), 753 states have internal predecessors, (1058), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 33 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:50:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1148 transitions. [2022-11-03 01:50:11,930 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1148 transitions. Word has length 34 [2022-11-03 01:50:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:11,930 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1148 transitions. [2022-11-03 01:50:11,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:50:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1148 transitions. [2022-11-03 01:50:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:50:11,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:11,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:11,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-03 01:50:11,932 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:50:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash -844574974, now seen corresponding path program 1 times [2022-11-03 01:50:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:11,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92794835] [2022-11-03 01:50:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:11,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:50:14,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:14,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92794835] [2022-11-03 01:50:14,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92794835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:50:14,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204101991] [2022-11-03 01:50:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:14,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:50:14,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:14,292 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:50:14,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 01:50:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:14,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-03 01:50:14,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:15,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:15,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:15,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-03 01:50:15,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:15,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:15,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:15,685 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:50:15,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 118 [2022-11-03 01:50:15,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:15,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 49 [2022-11-03 01:50:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:15,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:50:16,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:50:16,212 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:50:16,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 75 [2022-11-03 01:50:16,671 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:50:16,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 221 [2022-11-03 01:50:16,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:50:16,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:50:16,714 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:50:16,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 239 treesize of output 247 [2022-11-03 01:50:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:50:17,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204101991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:50:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [581716388] [2022-11-03 01:50:17,999 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-03 01:50:17,999 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:50:18,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:50:18,000 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:50:18,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:50:18,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:50:18,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,178 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:50:18,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:50:18,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,356 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:50:18,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:50:18,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,405 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:50:18,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:50:18,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,494 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:50:18,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:50:18,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,668 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:50:18,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 267 treesize of output 258 [2022-11-03 01:50:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,788 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:50:18,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 263 treesize of output 261 [2022-11-03 01:50:18,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,836 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:50:18,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 224 [2022-11-03 01:50:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:18,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,053 INFO L356 Elim1Store]: treesize reduction 260, result has 9.1 percent of original size [2022-11-03 01:50:19,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 278 treesize of output 256 [2022-11-03 01:50:19,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,156 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:50:19,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 266 treesize of output 253 [2022-11-03 01:50:19,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 225 [2022-11-03 01:50:19,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,463 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:50:19,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 270 treesize of output 290 [2022-11-03 01:50:19,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,525 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:50:19,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-03 01:50:19,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:19,672 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:50:19,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 258 treesize of output 252 [2022-11-03 01:50:20,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:20,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:20,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:20,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:20,053 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:50:20,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 459 treesize of output 421 [2022-11-03 01:50:20,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:20,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:20,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:50:20,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:20,203 INFO L356 Elim1Store]: treesize reduction 206, result has 10.0 percent of original size [2022-11-03 01:50:20,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 493 treesize of output 467 [2022-11-03 01:50:20,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:50:20,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:20,331 INFO L356 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2022-11-03 01:50:20,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 501 treesize of output 479 [2022-11-03 01:50:20,791 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:50:20,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:50:20,844 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:50:20,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:50:20,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:20,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:20,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:50:20,977 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:50:20,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:50:21,022 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:50:21,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:50:21,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:50:21,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:50:21,148 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:50:21,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:50:21,259 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:50:21,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:50:21,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:21,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:21,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:50:21,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:50:21,718 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:50:21,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:50:21,769 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:50:21,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:50:22,849 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:50:22,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:50:22,895 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:50:22,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:50:22,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:22,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:22,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:50:22,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:50:23,009 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:50:23,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:50:23,044 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:50:23,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:50:23,138 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:50:23,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:50:23,229 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:50:23,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:50:23,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:50:23,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:23,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:23,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:50:23,674 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:50:23,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:50:23,722 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:50:23,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:50:23,741 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:50:24,214 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:50:24,222 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:50:35,061 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39587#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= |ULTIMATE.start_is_empty_~no_beg~0#1| (ite (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0)) 1 0)) (= |ULTIMATE.start_is_empty_~list#1.base| |ULTIMATE.start_is_empty_#in~list#1.base|) (= |ULTIMATE.start_remove_one_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (= |ULTIMATE.start_is_empty_~no_end~0#1| (ite (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0)) 1 0)) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_main_#t~ret25#1|) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_remove_one_~from#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_remove_one_#in~list#1.base| |~#list~0.base|) (<= (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset| 4) (select |#length| |ULTIMATE.start_is_empty_~list#1.base|)) (<= |#NULL.base| 0) (= |~#list~0.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| |ULTIMATE.start_is_empty_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| 0) (or (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret25#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret25#1|)) (<= 0 |~#list~0.offset|) (= |ULTIMATE.start_is_empty_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (<= 3 |~#list~0.base|) (= (select |#valid| |ULTIMATE.start_is_empty_~list#1.base|) 1) (<= 0 |#NULL.offset|) (not (= |ULTIMATE.start_is_empty_~no_end~0#1| |ULTIMATE.start_is_empty_~no_beg~0#1|)) (= |ULTIMATE.start_remove_one_~list#1.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (<= 0 |#StackHeapBarrier|) (not (< |ULTIMATE.start_is_empty_~list#1.base| |#StackHeapBarrier|)) (<= |~#list~0.offset| 0))' at error location [2022-11-03 01:50:35,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:50:35,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:50:35,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 47 [2022-11-03 01:50:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900191472] [2022-11-03 01:50:35,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:50:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-03 01:50:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-03 01:50:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=4914, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 01:50:35,063 INFO L87 Difference]: Start difference. First operand 812 states and 1148 transitions. Second operand has 47 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:50:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:56,392 INFO L93 Difference]: Finished difference Result 2186 states and 2891 transitions. [2022-11-03 01:50:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-03 01:50:56,392 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-11-03 01:50:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:56,397 INFO L225 Difference]: With dead ends: 2186 [2022-11-03 01:50:56,397 INFO L226 Difference]: Without dead ends: 2182 [2022-11-03 01:50:56,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8580 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=3162, Invalid=22920, Unknown=0, NotChecked=0, Total=26082 [2022-11-03 01:50:56,400 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 5002 mSDsluCounter, 4477 mSDsCounter, 0 mSdLazyCounter, 3614 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5002 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 4392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 3614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:56,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5002 Valid, 4303 Invalid, 4392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 3614 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 01:50:56,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2022-11-03 01:50:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 800. [2022-11-03 01:50:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 693 states have (on average 1.4935064935064934) internal successors, (1035), 741 states have internal predecessors, (1035), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 33 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:50:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1125 transitions. [2022-11-03 01:50:56,433 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1125 transitions. Word has length 35 [2022-11-03 01:50:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:56,434 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1125 transitions. [2022-11-03 01:50:56,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:50:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1125 transitions. [2022-11-03 01:50:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 01:50:56,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:56,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:56,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:56,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-03 01:50:56,650 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:50:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash 577157674, now seen corresponding path program 1 times [2022-11-03 01:50:56,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:56,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542415588] [2022-11-03 01:50:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:58,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:58,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542415588] [2022-11-03 01:50:58,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542415588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:50:58,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158506063] [2022-11-03 01:50:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:58,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:50:58,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:58,288 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:50:58,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 01:50:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:58,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 01:50:58,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:58,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:50:58,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:50:58,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:50:59,296 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:50:59,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 41 [2022-11-03 01:50:59,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:50:59,715 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:50:59,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 17 [2022-11-03 01:50:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:50:59,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:00,349 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:51:00,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 251 [2022-11-03 01:51:00,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:51:00,421 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-03 01:51:00,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 274 treesize of output 280 [2022-11-03 01:51:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:01,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158506063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:01,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1427830162] [2022-11-03 01:51:01,888 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 01:51:01,889 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:51:01,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:51:01,889 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:51:01,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:51:01,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:01,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,035 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:51:02,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:51:02,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,247 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:51:02,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:51:02,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,332 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:51:02,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:51:02,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,375 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:51:02,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:51:02,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,558 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:51:02,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-03 01:51:02,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,642 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:51:02,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 269 treesize of output 258 [2022-11-03 01:51:02,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,685 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:51:02,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:51:02,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 241 [2022-11-03 01:51:02,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,874 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:51:02,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 284 treesize of output 261 [2022-11-03 01:51:02,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:02,988 INFO L356 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-03 01:51:02,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 274 treesize of output 260 [2022-11-03 01:51:03,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,276 INFO L356 Elim1Store]: treesize reduction 270, result has 17.4 percent of original size [2022-11-03 01:51:03,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 270 treesize of output 278 [2022-11-03 01:51:03,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,335 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:51:03,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 234 treesize of output 212 [2022-11-03 01:51:03,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,446 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:51:03,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 248 treesize of output 252 [2022-11-03 01:51:03,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:03,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:03,959 INFO L356 Elim1Store]: treesize reduction 266, result has 8.9 percent of original size [2022-11-03 01:51:03,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 535 treesize of output 493 [2022-11-03 01:51:03,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:03,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:04,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:04,008 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:51:04,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 465 treesize of output 427 [2022-11-03 01:51:04,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:04,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:04,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:04,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:04,115 INFO L356 Elim1Store]: treesize reduction 269, result has 7.9 percent of original size [2022-11-03 01:51:04,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 522 treesize of output 483 [2022-11-03 01:51:04,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:04,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:04,528 INFO L356 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-03 01:51:04,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 209 treesize of output 182 [2022-11-03 01:51:04,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:04,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:04,824 INFO L356 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-03 01:51:04,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 209 treesize of output 182 [2022-11-03 01:51:05,153 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:05,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:05,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:51:05,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:05,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:05,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:05,254 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:05,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:05,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:05,294 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:05,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:05,370 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:05,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:05,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:05,451 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:05,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:05,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:05,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:05,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:05,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:05,865 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:51:05,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:51:05,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:05,913 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:51:05,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:51:05,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:06,834 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:06,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:06,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:51:06,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:06,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:06,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:06,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:06,931 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:06,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:06,961 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:06,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:07,031 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:07,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:07,107 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:07,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:07,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:07,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:07,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:07,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:07,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:07,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:07,629 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:51:07,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:51:07,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:07,665 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:51:07,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:51:07,858 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:07,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:07,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:51:07,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:51:07,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:07,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:51:07,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:07,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:51:08,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:08,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:51:08,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:08,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:51:08,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:51:08,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:51:08,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:51:08,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:51:08,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:08,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2022-11-03 01:51:08,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:08,392 INFO L356 Elim1Store]: treesize reduction 52, result has 18.8 percent of original size [2022-11-03 01:51:08,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 85 [2022-11-03 01:51:08,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:51:08,773 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:08,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:08,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:51:08,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:08,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:08,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:08,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:08,890 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:08,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:08,932 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:08,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:09,011 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:09,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:09,089 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:09,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:09,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:09,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:09,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:09,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:09,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:09,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:09,649 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:51:09,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:51:09,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:09,697 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:51:09,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:51:10,460 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:10,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:10,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:51:10,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:10,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:10,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 11 [2022-11-03 01:51:10,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:10,562 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:10,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:10,595 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:10,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:10,676 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:10,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:10,746 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:10,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:10,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:10,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:10,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:10,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:11,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:11,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,253 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:51:11,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:51:11,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,295 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:51:11,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:51:11,465 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:51:11,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:51:11,520 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:11,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:11,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:51:11,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:11,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:51:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:51:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:51:11,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:11,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:51:11,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:51:11,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:11,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:51:11,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:51:11,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:51:11,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:11,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:12,018 INFO L356 Elim1Store]: treesize reduction 44, result has 31.3 percent of original size [2022-11-03 01:51:12,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 93 [2022-11-03 01:51:12,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:12,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:12,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:12,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2022-11-03 01:51:12,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:51:12,404 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:51:12,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:51:12,454 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:12,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:12,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:12,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:12,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:12,551 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:12,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:12,585 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:12,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:12,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:12,676 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:12,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:12,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:12,761 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:12,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:12,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:12,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:12,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:13,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:13,195 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:51:13,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:51:13,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:13,233 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:51:13,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:51:13,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:14,061 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:14,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:14,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:51:14,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:14,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:14,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:14,157 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:14,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:14,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:14,197 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:14,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:14,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:14,291 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:14,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:14,365 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:14,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:14,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:14,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:14,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:14,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:14,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:14,805 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:51:14,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:51:14,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:14,855 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:51:14,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:51:15,268 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:51:15,275 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:51:24,698 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43013#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (not (< |ULTIMATE.start_main_~cursor~0#1.base| |#StackHeapBarrier|)) (= (select |#valid| |~#list~0.base|) 1) (= |ULTIMATE.start_main_~next~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|))) (= (select (select |#memory_$Pointer$.offset| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.offset|) (<= (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset| 4) (select |#length| |~#list~0.base|)) (<= |#NULL.offset| 0) (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|) (or (and (= ~unnamed2~0~ITEM_NEXT |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_~end_point~0#1|)) (and (= ~unnamed2~0~ITEM_PREV |ULTIMATE.start_main_~direction~0#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_~end_point~0#1|))) (= (select |#valid| |ULTIMATE.start_main_~cursor~0#1.base|) 1) (<= (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) 4 |ULTIMATE.start_main_~cursor~0#1.offset|) (select |#length| |ULTIMATE.start_main_~cursor~0#1.base|)) (<= |#NULL.base| 0) (= |ULTIMATE.start_main_~next~1#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~cursor~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~direction~0#1|) |ULTIMATE.start_main_~cursor~0#1.offset|))) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |~#list~0.base|) (+ (* |ULTIMATE.start_main_~end_point~0#1| 4) |~#list~0.offset|)) |ULTIMATE.start_main_~cursor~0#1.base|) (not (= |ULTIMATE.start_main_~cursor~0#1.base| 0)) (<= |~#list~0.offset| 0))' at error location [2022-11-03 01:51:24,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:51:24,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:51:24,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 13] total 36 [2022-11-03 01:51:24,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261876132] [2022-11-03 01:51:24,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:24,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-03 01:51:24,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:24,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-03 01:51:24,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3541, Unknown=0, NotChecked=0, Total=3782 [2022-11-03 01:51:24,701 INFO L87 Difference]: Start difference. First operand 800 states and 1125 transitions. Second operand has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 37 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:51:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:28,067 INFO L93 Difference]: Finished difference Result 808 states and 1134 transitions. [2022-11-03 01:51:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 01:51:28,068 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 37 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2022-11-03 01:51:28,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:28,072 INFO L225 Difference]: With dead ends: 808 [2022-11-03 01:51:28,072 INFO L226 Difference]: Without dead ends: 808 [2022-11-03 01:51:28,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=410, Invalid=4702, Unknown=0, NotChecked=0, Total=5112 [2022-11-03 01:51:28,073 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 75 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:28,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2087 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1332 Invalid, 0 Unknown, 254 Unchecked, 1.8s Time] [2022-11-03 01:51:28,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-03 01:51:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 800. [2022-11-03 01:51:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 693 states have (on average 1.4935064935064934) internal successors, (1035), 741 states have internal predecessors, (1035), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 33 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:51:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1125 transitions. [2022-11-03 01:51:28,093 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1125 transitions. Word has length 34 [2022-11-03 01:51:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:28,094 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1125 transitions. [2022-11-03 01:51:28,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 37 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 01:51:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1125 transitions. [2022-11-03 01:51:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 01:51:28,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:28,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:28,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:28,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:28,311 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:51:28,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:28,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1997989382, now seen corresponding path program 1 times [2022-11-03 01:51:28,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:28,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609909934] [2022-11-03 01:51:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:28,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:51:30,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:30,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609909934] [2022-11-03 01:51:30,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609909934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:30,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326712042] [2022-11-03 01:51:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:30,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:30,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:30,457 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:30,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 01:51:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:30,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 01:51:30,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:31,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:31,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2022-11-03 01:51:31,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:31,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2022-11-03 01:51:31,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:31,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:31,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:31,512 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:51:31,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 130 [2022-11-03 01:51:31,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:31,527 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:51:31,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 66 [2022-11-03 01:51:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:31,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:32,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:32,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:33,021 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:51:33,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 243 treesize of output 239 [2022-11-03 01:51:33,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:33,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:33,055 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:51:33,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 203 treesize of output 187 [2022-11-03 01:51:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:51:33,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326712042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:33,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598128258] [2022-11-03 01:51:33,784 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-03 01:51:33,784 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:51:33,785 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:51:33,785 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:51:33,785 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:51:33,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:33,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:33,934 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:51:33,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:51:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,089 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:51:34,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:51:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,137 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:51:34,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:51:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,219 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:51:34,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:51:34,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,408 INFO L356 Elim1Store]: treesize reduction 230, result has 11.9 percent of original size [2022-11-03 01:51:34,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 261 [2022-11-03 01:51:34,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,462 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:51:34,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:51:34,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,575 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:51:34,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-03 01:51:34,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,755 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:51:34,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 284 treesize of output 261 [2022-11-03 01:51:34,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,904 INFO L356 Elim1Store]: treesize reduction 252, result has 11.9 percent of original size [2022-11-03 01:51:34,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 272 [2022-11-03 01:51:34,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:34,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 241 [2022-11-03 01:51:35,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,193 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:51:35,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 280 treesize of output 290 [2022-11-03 01:51:35,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,321 INFO L356 Elim1Store]: treesize reduction 288, result has 11.9 percent of original size [2022-11-03 01:51:35,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 262 treesize of output 252 [2022-11-03 01:51:35,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,382 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:51:35,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-03 01:51:35,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:35,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:35,742 INFO L356 Elim1Store]: treesize reduction 266, result has 8.9 percent of original size [2022-11-03 01:51:35,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 341 treesize of output 313 [2022-11-03 01:51:35,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:35,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:35,857 INFO L356 Elim1Store]: treesize reduction 269, result has 7.9 percent of original size [2022-11-03 01:51:35,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 18 case distinctions, treesize of input 306 treesize of output 269 [2022-11-03 01:51:35,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:35,900 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:51:35,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 244 treesize of output 222 [2022-11-03 01:51:36,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:36,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:36,208 INFO L356 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-03 01:51:36,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 209 treesize of output 182 [2022-11-03 01:51:36,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:36,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:51:36,463 INFO L356 Elim1Store]: treesize reduction 107, result has 9.3 percent of original size [2022-11-03 01:51:36,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 209 treesize of output 182 [2022-11-03 01:51:36,765 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:51:36,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:51:36,807 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:36,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:36,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:36,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:36,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:36,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:36,914 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:36,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:36,945 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:36,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:37,028 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:37,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:37,111 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:37,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:37,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:37,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:37,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:37,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:37,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:37,657 INFO L356 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-03 01:51:37,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 69 [2022-11-03 01:51:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:51:37,706 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 01:51:37,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2022-11-03 01:51:37,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:38,598 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:51:38,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:51:38,634 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:51:38,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:51:38,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:38,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:38,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:51:38,724 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:38,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:38,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:38,768 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:51:38,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:51:38,850 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:38,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:38,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:51:38,969 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:51:38,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:51:39,188 INFO L356 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-03 01:51:39,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-03 01:51:39,386 INFO L356 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-03 01:51:39,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-03 01:51:39,491 INFO L356 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2022-11-03 01:51:39,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2022-11-03 01:51:44,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 01:51:44,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 01:51:44,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:51:47,986 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:51:47,994 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:51:59,886 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '44910#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (= |ULTIMATE.start_is_empty_~no_beg~0#1| (ite (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ |ULTIMATE.start_is_empty_~list#1.offset| (* ~unnamed1~0~LIST_BEG 4))) 0)) 1 0)) (= |ULTIMATE.start_is_empty_~list#1.base| |ULTIMATE.start_is_empty_#in~list#1.base|) (= |ULTIMATE.start_remove_one_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (= |ULTIMATE.start_is_empty_~no_end~0#1| (ite (and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_is_empty_~list#1.base|) (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset|)) 0)) 1 0)) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_main_#t~ret25#1|) (= |ULTIMATE.start_remove_one_#in~from#1| |ULTIMATE.start_remove_one_~from#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_remove_one_#in~list#1.base| |~#list~0.base|) (<= (+ (* ~unnamed1~0~LIST_END 4) |ULTIMATE.start_is_empty_~list#1.offset| 4) (select |#length| |ULTIMATE.start_is_empty_~list#1.base|)) (<= |#NULL.base| 0) (= |~#list~0.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| |ULTIMATE.start_is_empty_#in~list#1.offset|) (= |ULTIMATE.start_is_empty_~list#1.offset| 0) (or (= ~unnamed1~0~LIST_BEG |ULTIMATE.start_main_#t~ret25#1|) (= ~unnamed1~0~LIST_END |ULTIMATE.start_main_#t~ret25#1|)) (<= 0 |~#list~0.offset|) (= |ULTIMATE.start_is_empty_#in~list#1.base| |ULTIMATE.start_remove_one_~list#1.base|) (<= 3 |~#list~0.base|) (= (select |#valid| |ULTIMATE.start_is_empty_~list#1.base|) 1) (<= 0 |#NULL.offset|) (not (= |ULTIMATE.start_is_empty_~no_end~0#1| |ULTIMATE.start_is_empty_~no_beg~0#1|)) (= |ULTIMATE.start_remove_one_~list#1.offset| |ULTIMATE.start_remove_one_#in~list#1.offset|) (<= 0 |#StackHeapBarrier|) (not (< |ULTIMATE.start_is_empty_~list#1.base| |#StackHeapBarrier|)) (<= |~#list~0.offset| 0))' at error location [2022-11-03 01:51:59,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:51:59,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:51:59,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 39 [2022-11-03 01:51:59,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775574705] [2022-11-03 01:51:59,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:59,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-03 01:51:59,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:59,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-03 01:51:59,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=3816, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 01:51:59,888 INFO L87 Difference]: Start difference. First operand 800 states and 1125 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:52:18,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:18,660 INFO L93 Difference]: Finished difference Result 2441 states and 3254 transitions. [2022-11-03 01:52:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-03 01:52:18,661 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-11-03 01:52:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:18,669 INFO L225 Difference]: With dead ends: 2441 [2022-11-03 01:52:18,669 INFO L226 Difference]: Without dead ends: 2435 [2022-11-03 01:52:18,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6794 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=2447, Invalid=17859, Unknown=0, NotChecked=0, Total=20306 [2022-11-03 01:52:18,671 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 3561 mSDsluCounter, 4881 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3561 SdHoareTripleChecker+Valid, 4706 SdHoareTripleChecker+Invalid, 4253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:18,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3561 Valid, 4706 Invalid, 4253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 3571 Invalid, 0 Unknown, 159 Unchecked, 5.3s Time] [2022-11-03 01:52:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2022-11-03 01:52:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 788. [2022-11-03 01:52:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 681 states have (on average 1.4787077826725403) internal successors, (1007), 729 states have internal predecessors, (1007), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 33 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:52:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1097 transitions. [2022-11-03 01:52:18,711 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1097 transitions. Word has length 35 [2022-11-03 01:52:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:18,711 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1097 transitions. [2022-11-03 01:52:18,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 01:52:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1097 transitions. [2022-11-03 01:52:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:52:18,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:18,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:18,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:18,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:18,927 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:52:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash -411645046, now seen corresponding path program 1 times [2022-11-03 01:52:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:18,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753241493] [2022-11-03 01:52:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:52:19,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:19,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753241493] [2022-11-03 01:52:19,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753241493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:19,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:19,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:52:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823163801] [2022-11-03 01:52:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:19,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:52:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:52:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:52:19,219 INFO L87 Difference]: Start difference. First operand 788 states and 1097 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:52:19,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:19,576 INFO L93 Difference]: Finished difference Result 979 states and 1351 transitions. [2022-11-03 01:52:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:52:19,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-03 01:52:19,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:19,581 INFO L225 Difference]: With dead ends: 979 [2022-11-03 01:52:19,581 INFO L226 Difference]: Without dead ends: 979 [2022-11-03 01:52:19,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:52:19,582 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:19,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 138 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:52:19,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2022-11-03 01:52:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 786. [2022-11-03 01:52:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 681 states have (on average 1.4434654919236416) internal successors, (983), 727 states have internal predecessors, (983), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 33 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:52:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1073 transitions. [2022-11-03 01:52:19,646 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1073 transitions. Word has length 36 [2022-11-03 01:52:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:19,647 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 1073 transitions. [2022-11-03 01:52:19,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:52:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1073 transitions. [2022-11-03 01:52:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 01:52:19,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:19,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:19,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-03 01:52:19,648 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:52:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1680142043, now seen corresponding path program 1 times [2022-11-03 01:52:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:19,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169970994] [2022-11-03 01:52:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:19,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:22,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:22,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169970994] [2022-11-03 01:52:22,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169970994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:22,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562601977] [2022-11-03 01:52:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:22,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:22,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:22,427 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:22,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 01:52:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:22,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-03 01:52:22,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:23,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:52:23,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:23,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 41 [2022-11-03 01:52:24,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:52:24,456 INFO L356 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-03 01:52:24,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 25 [2022-11-03 01:52:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:24,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:25,262 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:52:25,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 157 [2022-11-03 01:52:25,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:52:25,308 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:52:25,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 115 [2022-11-03 01:52:25,701 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:52:25,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 173 [2022-11-03 01:52:25,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-03 01:52:25,749 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:52:25,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 126 [2022-11-03 01:53:14,957 WARN L234 SmtUtils]: Spent 48.48s on a formula simplification. DAG size of input: 125 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:21,250 WARN L234 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:29,455 WARN L234 SmtUtils]: Spent 7.96s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:07,901 WARN L234 SmtUtils]: Spent 38.09s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:18,073 WARN L234 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:20,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562601977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:20,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [518837147] [2022-11-03 01:54:20,258 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-03 01:54:20,258 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:54:20,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:54:20,259 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:54:20,259 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:54:20,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:54:20,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:20,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:20,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:20,410 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 01:54:20,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 224 [2022-11-03 01:54:20,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:20,567 INFO L356 Elim1Store]: treesize reduction 148, result has 11.9 percent of original size [2022-11-03 01:54:20,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 247 [2022-11-03 01:54:20,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:20,613 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:54:20,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:54:20,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:20,693 INFO L356 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2022-11-03 01:54:20,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 255 [2022-11-03 01:54:20,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:20,874 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:54:20,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 271 treesize of output 269 [2022-11-03 01:54:20,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:20,959 INFO L356 Elim1Store]: treesize reduction 132, result has 17.5 percent of original size [2022-11-03 01:54:20,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 269 treesize of output 258 [2022-11-03 01:54:21,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,019 INFO L356 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2022-11-03 01:54:21,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 232 [2022-11-03 01:54:21,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,202 INFO L356 Elim1Store]: treesize reduction 140, result has 14.1 percent of original size [2022-11-03 01:54:21,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 284 treesize of output 261 [2022-11-03 01:54:21,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,317 INFO L356 Elim1Store]: treesize reduction 260, result has 9.1 percent of original size [2022-11-03 01:54:21,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 286 treesize of output 264 [2022-11-03 01:54:21,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 247 treesize of output 241 [2022-11-03 01:54:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,608 INFO L356 Elim1Store]: treesize reduction 204, result has 21.8 percent of original size [2022-11-03 01:54:21,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 280 treesize of output 290 [2022-11-03 01:54:21,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,677 INFO L356 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2022-11-03 01:54:21,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 246 treesize of output 224 [2022-11-03 01:54:21,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:21,794 INFO L356 Elim1Store]: treesize reduction 222, result has 14.9 percent of original size [2022-11-03 01:54:21,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 260 treesize of output 252 [2022-11-03 01:54:22,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,038 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:54:22,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 445 treesize of output 407 [2022-11-03 01:54:22,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:54:22,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,183 INFO L356 Elim1Store]: treesize reduction 206, result has 10.0 percent of original size [2022-11-03 01:54:22,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 481 treesize of output 461 [2022-11-03 01:54:22,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:54:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,322 INFO L356 Elim1Store]: treesize reduction 238, result has 15.0 percent of original size [2022-11-03 01:54:22,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 463 treesize of output 459 [2022-11-03 01:54:22,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:22,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:54:22,715 INFO L356 Elim1Store]: treesize reduction 92, result has 10.7 percent of original size [2022-11-03 01:54:22,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 201 treesize of output 167 [2022-11-03 01:54:23,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:23,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:54:23,042 INFO L356 Elim1Store]: treesize reduction 92, result has 10.7 percent of original size [2022-11-03 01:54:23,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 201 treesize of output 167 [2022-11-03 01:54:23,472 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:54:23,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:54:23,525 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:54:23,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:54:23,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:23,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:23,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:23,618 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:23,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:23,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:23,685 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:23,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:23,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:54:23,791 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:23,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:23,873 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:23,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:23,991 INFO L356 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2022-11-03 01:54:23,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2022-11-03 01:54:24,107 INFO L356 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-03 01:54:24,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-03 01:54:24,304 INFO L356 Elim1Store]: treesize reduction 56, result has 54.5 percent of original size [2022-11-03 01:54:24,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 117 [2022-11-03 01:54:24,631 INFO L356 Elim1Store]: treesize reduction 176, result has 30.7 percent of original size [2022-11-03 01:54:24,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 302 treesize of output 287 [2022-11-03 01:54:24,888 INFO L356 Elim1Store]: treesize reduction 220, result has 13.4 percent of original size [2022-11-03 01:54:24,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 288 treesize of output 221 [2022-11-03 01:54:24,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:24,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-11-03 01:54:46,099 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:54:46,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:54:46,152 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:54:46,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:54:46,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:46,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:46,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:46,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:46,235 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:46,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:46,265 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:46,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:46,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:54:46,348 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:46,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:46,419 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:46,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:46,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:46,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:46,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:46,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:46,782 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:54:46,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:54:46,873 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:54:46,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:54:47,125 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:54:47,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:54:47,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:54:47,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:54:47,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:54:47,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:47,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:47,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:54:47,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:54:47,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:54:47,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:54:47,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:54:47,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:54:47,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:54:47,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:54:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,559 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:54:47,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-03 01:54:47,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:47,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 57 [2022-11-03 01:54:47,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:54:47,996 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:54:47,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:54:48,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:54:48,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:48,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:48,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:48,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:48,118 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:48,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:48,156 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:48,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:48,243 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:48,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:48,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:54:48,334 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:48,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:48,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:48,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:48,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:48,666 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:54:48,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:54:48,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:48,723 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:54:48,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:54:49,572 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:54:49,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 01:54:49,625 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:54:49,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:54:49,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:49,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:49,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:49,705 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:49,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:49,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:49,746 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:49,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:49,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:54:49,832 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:49,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:49,907 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:49,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:50,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:50,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:50,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:50,261 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:54:50,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:54:50,294 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:54:50,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:54:50,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:50,634 INFO L356 Elim1Store]: treesize reduction 35, result has 32.7 percent of original size [2022-11-03 01:54:50,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 37 [2022-11-03 01:54:50,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 01:54:50,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 01:54:50,779 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:54:50,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:54:50,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:54:50,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:54:50,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:50,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-11-03 01:54:50,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:50,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:54:50,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:50,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:50,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-03 01:54:50,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:50,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:50,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:50,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:54:51,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:54:51,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:51,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:51,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 43 [2022-11-03 01:54:51,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:51,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:54:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:51,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 43 [2022-11-03 01:54:51,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:54:51,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:51,235 INFO L356 Elim1Store]: treesize reduction 32, result has 38.5 percent of original size [2022-11-03 01:54:51,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 65 [2022-11-03 01:54:51,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-03 01:54:51,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:51,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:54:51,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 57 [2022-11-03 01:54:51,691 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:54:51,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:54:51,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:54:51,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:51,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:51,752 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:51,797 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:51,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:51,830 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:51,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:51,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:51,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:54:51,929 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:51,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:52,010 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:52,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:52,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:52,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:52,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:52,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:52,423 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:54:52,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:54:52,463 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:54:52,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:54:53,330 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:54:53,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 01:54:53,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 19 [2022-11-03 01:54:53,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:53,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:53,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:53,422 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:53,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:53,454 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-03 01:54:53,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 01:54:53,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:53,543 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:53,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:53,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:54:53,632 INFO L356 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2022-11-03 01:54:53,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 61 [2022-11-03 01:54:53,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:53,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:53,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:54:53,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2022-11-03 01:54:53,999 INFO L356 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2022-11-03 01:54:53,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:54:54,041 INFO L356 Elim1Store]: treesize reduction 28, result has 46.2 percent of original size [2022-11-03 01:54:54,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-11-03 01:54:54,499 INFO L197 IcfgInterpreter]: Interpreting procedure rand_end_point with input of size 17 for LOIs [2022-11-03 01:54:54,505 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:55:03,643 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50349#(and (<= |~#list~0.base| 3) (<= 0 |#NULL.base|) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (<= |#NULL.offset| 0) (= 0 |ULTIMATE.start_main_~cursor~0#1.offset|) (= |ULTIMATE.start_main_~cursor~0#1.base| 0) (<= |#NULL.base| 0) (<= 0 |~#list~0.offset|) (<= 3 |~#list~0.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#res#1| 0) (<= |~#list~0.offset| 0))' at error location [2022-11-03 01:55:03,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:55:03,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:55:03,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 32 [2022-11-03 01:55:03,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251600714] [2022-11-03 01:55:03,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:55:03,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 01:55:03,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:55:03,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 01:55:03,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4416, Unknown=1, NotChecked=0, Total=4692 [2022-11-03 01:55:03,645 INFO L87 Difference]: Start difference. First operand 786 states and 1073 transitions. Second operand has 33 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:55:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:06,465 INFO L93 Difference]: Finished difference Result 797 states and 1086 transitions. [2022-11-03 01:55:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 01:55:06,467 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-11-03 01:55:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:06,469 INFO L225 Difference]: With dead ends: 797 [2022-11-03 01:55:06,470 INFO L226 Difference]: Without dead ends: 796 [2022-11-03 01:55:06,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1646 ImplicationChecksByTransitivity, 127.1s TimeCoverageRelationStatistics Valid=395, Invalid=6246, Unknown=1, NotChecked=0, Total=6642 [2022-11-03 01:55:06,471 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 74 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:06,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1026 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 732 Invalid, 0 Unknown, 345 Unchecked, 0.9s Time] [2022-11-03 01:55:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-03 01:55:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 794. [2022-11-03 01:55:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 689 states have (on average 1.4383164005805515) internal successors, (991), 735 states have internal predecessors, (991), 45 states have call successors, (45), 25 states have call predecessors, (45), 25 states have return successors, (45), 33 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-03 01:55:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1081 transitions. [2022-11-03 01:55:06,485 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1081 transitions. Word has length 37 [2022-11-03 01:55:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:06,486 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1081 transitions. [2022-11-03 01:55:06,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:55:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1081 transitions. [2022-11-03 01:55:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-03 01:55:06,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:06,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:06,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-03 01:55:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-03 01:55:06,715 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-03 01:55:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1680140696, now seen corresponding path program 1 times [2022-11-03 01:55:06,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:06,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997361044] [2022-11-03 01:55:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:06,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:10,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:55:10,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997361044] [2022-11-03 01:55:10,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997361044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:55:10,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127194716] [2022-11-03 01:55:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:10,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:10,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:10,844 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:10,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717916e8-5ea3-4c48-b7e1-d0bff55c6dfd/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-03 01:55:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:11,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-03 01:55:11,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:11,527 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:55:11,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-03 01:55:11,547 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-03 01:55:11,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-03 01:55:11,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:55:11,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:55:11,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:11,987 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-11-03 01:55:11,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 94 [2022-11-03 01:55:11,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:12,034 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-11-03 01:55:12,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 78 [2022-11-03 01:55:12,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:12,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:12,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:12,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 94 treesize of output 84 [2022-11-03 01:55:12,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:12,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:12,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:12,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 94 treesize of output 84 [2022-11-03 01:55:13,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:13,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:13,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-03 01:55:13,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:13,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-03 01:55:13,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:13,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-11-03 01:55:13,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:13,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:55:13,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:13,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:55:13,613 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-11-03 01:55:13,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 75 [2022-11-03 01:55:14,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:55:14,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:14,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:55:14,490 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:55:14,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 38 [2022-11-03 01:55:14,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:14,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:14,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:55:14,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:55:14,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:55:14,546 INFO L356 Elim1Store]: treesize reduction 56, result has 37.1 percent of original size [2022-11-03 01:55:14,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 94 treesize of output 67 [2022-11-03 01:55:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:14,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:32,335 INFO L356 Elim1Store]: treesize reduction 892, result has 22.0 percent of original size [2022-11-03 01:55:32,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 6246556 treesize of output 6147715