./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8 --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 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:07:12,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:07:12,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:07:13,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:07:13,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:07:13,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:07:13,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:07:13,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:07:13,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:07:13,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:07:13,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:07:13,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:07:13,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:07:13,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:07:13,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:07:13,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:07:13,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:07:13,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:07:13,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:07:13,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:07:13,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:07:13,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:07:13,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:07:13,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:07:13,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:07:13,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:07:13,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:07:13,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:07:13,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:07:13,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:07:13,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:07:13,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:07:13,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:07:13,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:07:13,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:07:13,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:07:13,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:07:13,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:07:13,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:07:13,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:07:13,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:07:13,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:07:13,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:07:13,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:07:13,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:07:13,098 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:07:13,098 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:07:13,098 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:07:13,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:07:13,099 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:07:13,099 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:07:13,099 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:07:13,099 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:07:13,099 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:07:13,100 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:07:13,100 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:07:13,100 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:07:13,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:07:13,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:07:13,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:07:13,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:07:13,101 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:07:13,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:07:13,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:07:13,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:07:13,102 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:07:13,102 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:07:13,103 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:07:13,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:07:13,103 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:07:13,103 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:07:13,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:07:13,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:07:13,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:07:13,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:07:13,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:07:13,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:07:13,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:07:13,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:07:13,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:07:13,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:07:13,105 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2021-11-07 01:07:13,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:07:13,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:07:13,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:07:13,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:07:13,455 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:07:13,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/memsafety/test-0235-1.i [2021-11-07 01:07:13,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/data/1d9f46eae/85d64690be8d48e6b0ba6edba9937545/FLAG2ec73f255 [2021-11-07 01:07:14,173 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:07:14,174 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/sv-benchmarks/c/memsafety/test-0235-1.i [2021-11-07 01:07:14,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/data/1d9f46eae/85d64690be8d48e6b0ba6edba9937545/FLAG2ec73f255 [2021-11-07 01:07:14,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/data/1d9f46eae/85d64690be8d48e6b0ba6edba9937545 [2021-11-07 01:07:14,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:07:14,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:07:14,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:07:14,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:07:14,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:07:14,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:07:14" (1/1) ... [2021-11-07 01:07:14,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1143d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:14, skipping insertion in model container [2021-11-07 01:07:14,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:07:14" (1/1) ... [2021-11-07 01:07:14,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:07:14,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:07:15,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:07:15,082 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:07:15,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:07:15,201 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:07:15,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15 WrapperNode [2021-11-07 01:07:15,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:07:15,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:07:15,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:07:15,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:07:15,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:07:15,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:07:15,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:07:15,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:07:15,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:07:15,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:07:15,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:07:15,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:07:15,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (1/1) ... [2021-11-07 01:07:15,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:07:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:15,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:07:15,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:07:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:07:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:07:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:07:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:07:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:07:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:07:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:07:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:07:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:07:17,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:07:17,717 INFO L299 CfgBuilder]: Removed 130 assume(true) statements. [2021-11-07 01:07:17,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:17 BoogieIcfgContainer [2021-11-07 01:07:17,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:07:17,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:07:17,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:07:17,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:07:17,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:07:14" (1/3) ... [2021-11-07 01:07:17,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5924d59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:07:17, skipping insertion in model container [2021-11-07 01:07:17,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:15" (2/3) ... [2021-11-07 01:07:17,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5924d59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:07:17, skipping insertion in model container [2021-11-07 01:07:17,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:17" (3/3) ... [2021-11-07 01:07:17,739 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2021-11-07 01:07:17,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:07:17,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 247 error locations. [2021-11-07 01:07:17,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:07:17,803 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:07:17,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 247 error locations. [2021-11-07 01:07:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 565 states, 317 states have (on average 2.145110410094637) internal successors, (680), 564 states have internal predecessors, (680), 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) [2021-11-07 01:07:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:07:17,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:17,843 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:07:17,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:07:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1336297, now seen corresponding path program 1 times [2021-11-07 01:07:17,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:17,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999782644] [2021-11-07 01:07:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:17,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:18,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:18,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999782644] [2021-11-07 01:07:18,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999782644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:18,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:18,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:07:18,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104644922] [2021-11-07 01:07:18,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:07:18,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:18,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:07:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:07:18,094 INFO L87 Difference]: Start difference. First operand has 565 states, 317 states have (on average 2.145110410094637) internal successors, (680), 564 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-07 01:07:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:18,168 INFO L93 Difference]: Finished difference Result 565 states and 650 transitions. [2021-11-07 01:07:18,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:07:18,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-07 01:07:18,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:18,195 INFO L225 Difference]: With dead ends: 565 [2021-11-07 01:07:18,196 INFO L226 Difference]: Without dead ends: 564 [2021-11-07 01:07:18,198 INFO L786 BasicCegarLoop]: 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 [2021-11-07 01:07:18,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-07 01:07:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2021-11-07 01:07:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 317 states have (on average 2.047318611987382) internal successors, (649), 563 states have internal predecessors, (649), 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) [2021-11-07 01:07:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 649 transitions. [2021-11-07 01:07:18,286 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 649 transitions. Word has length 3 [2021-11-07 01:07:18,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:18,287 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 649 transitions. [2021-11-07 01:07:18,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-07 01:07:18,287 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 649 transitions. [2021-11-07 01:07:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:07:18,288 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:18,288 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:07:18,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:07:18,289 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:07:18,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:18,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1328295, now seen corresponding path program 1 times [2021-11-07 01:07:18,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:18,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333369910] [2021-11-07 01:07:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:18,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:18,304 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:07:18,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120123300] [2021-11-07 01:07:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:18,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:18,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:18,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:18,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:07:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:18,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:07:18,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:18,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:07:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:18,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:18,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:18,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333369910] [2021-11-07 01:07:18,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:07:18,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120123300] [2021-11-07 01:07:18,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120123300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:18,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:18,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:07:18,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766245887] [2021-11-07 01:07:18,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:07:18,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:07:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:07:18,520 INFO L87 Difference]: Start difference. First operand 564 states and 649 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-07 01:07:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:19,271 INFO L93 Difference]: Finished difference Result 1031 states and 1190 transitions. [2021-11-07 01:07:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:07:19,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-07 01:07:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:19,280 INFO L225 Difference]: With dead ends: 1031 [2021-11-07 01:07:19,281 INFO L226 Difference]: Without dead ends: 1031 [2021-11-07 01:07:19,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:07:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-11-07 01:07:19,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 558. [2021-11-07 01:07:19,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 317 states have (on average 2.028391167192429) internal successors, (643), 557 states have internal predecessors, (643), 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) [2021-11-07 01:07:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 643 transitions. [2021-11-07 01:07:19,337 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 643 transitions. Word has length 3 [2021-11-07 01:07:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:19,337 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 643 transitions. [2021-11-07 01:07:19,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-07 01:07:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 643 transitions. [2021-11-07 01:07:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 01:07:19,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:19,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 01:07:19,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:19,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:19,565 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:07:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash 41177185, now seen corresponding path program 1 times [2021-11-07 01:07:19,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:19,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746640912] [2021-11-07 01:07:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:19,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:19,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:07:19,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352247758] [2021-11-07 01:07:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:19,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:19,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:19,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:07:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:19,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:07:19,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:19,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-11-07 01:07:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:19,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:19,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:19,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746640912] [2021-11-07 01:07:19,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:07:19,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352247758] [2021-11-07 01:07:19,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352247758] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:19,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:19,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:07:19,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705755337] [2021-11-07 01:07:19,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:19,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:19,936 INFO L87 Difference]: Start difference. First operand 558 states and 643 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2021-11-07 01:07:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:20,423 INFO L93 Difference]: Finished difference Result 553 states and 638 transitions. [2021-11-07 01:07:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:07:20,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 4 [2021-11-07 01:07:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:20,429 INFO L225 Difference]: With dead ends: 553 [2021-11-07 01:07:20,429 INFO L226 Difference]: Without dead ends: 553 [2021-11-07 01:07:20,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-11-07 01:07:20,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 552. [2021-11-07 01:07:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 317 states have (on average 2.0094637223974763) internal successors, (637), 551 states have internal predecessors, (637), 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) [2021-11-07 01:07:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 637 transitions. [2021-11-07 01:07:20,450 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 637 transitions. Word has length 4 [2021-11-07 01:07:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:20,451 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 637 transitions. [2021-11-07 01:07:20,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2021-11-07 01:07:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 637 transitions. [2021-11-07 01:07:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:07:20,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:20,453 INFO L513 BasicCegarLoop]: 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] [2021-11-07 01:07:20,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:20,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:20,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:07:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -208353947, now seen corresponding path program 1 times [2021-11-07 01:07:20,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:20,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124131780] [2021-11-07 01:07:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:20,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:20,688 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:07:20,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698337187] [2021-11-07 01:07:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:20,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:20,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:20,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:20,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:07:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:20,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:07:20,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:20,972 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:07:20,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 01:07:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:21,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:21,214 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-11-07 01:07:21,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 26 [2021-11-07 01:07:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:21,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:21,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124131780] [2021-11-07 01:07:21,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:07:21,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698337187] [2021-11-07 01:07:21,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698337187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:21,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:21,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:07:21,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795225873] [2021-11-07 01:07:21,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:07:21,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:07:21,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:07:21,259 INFO L87 Difference]: Start difference. First operand 552 states and 637 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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) [2021-11-07 01:07:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:22,319 INFO L93 Difference]: Finished difference Result 1039 states and 1202 transitions. [2021-11-07 01:07:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:22,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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 25 [2021-11-07 01:07:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:22,326 INFO L225 Difference]: With dead ends: 1039 [2021-11-07 01:07:22,326 INFO L226 Difference]: Without dead ends: 1039 [2021-11-07 01:07:22,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:07:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2021-11-07 01:07:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 550. [2021-11-07 01:07:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 317 states have (on average 2.003154574132492) internal successors, (635), 549 states have internal predecessors, (635), 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) [2021-11-07 01:07:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 635 transitions. [2021-11-07 01:07:22,343 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 635 transitions. Word has length 25 [2021-11-07 01:07:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:22,343 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 635 transitions. [2021-11-07 01:07:22,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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) [2021-11-07 01:07:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 635 transitions. [2021-11-07 01:07:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:07:22,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:22,345 INFO L513 BasicCegarLoop]: 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] [2021-11-07 01:07:22,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:22,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:22,561 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:07:22,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:22,561 INFO L85 PathProgramCache]: Analyzing trace with hash -208353946, now seen corresponding path program 1 times [2021-11-07 01:07:22,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:22,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078445937] [2021-11-07 01:07:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:22,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:22,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:07:22,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138768719] [2021-11-07 01:07:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:22,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:22,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:22,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:07:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:22,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 01:07:22,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:22,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-11-07 01:07:23,132 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-07 01:07:23,133 INFO L388 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 1 case distinctions, treesize of input 43 treesize of output 41 [2021-11-07 01:07:23,143 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:07:23,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 41 [2021-11-07 01:07:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:23,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:23,571 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 01:07:23,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:07:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:23,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:23,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078445937] [2021-11-07 01:07:23,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:07:23,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138768719] [2021-11-07 01:07:23,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138768719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:23,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:23,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:07:23,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950468484] [2021-11-07 01:07:23,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:07:23,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:07:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:07:23,730 INFO L87 Difference]: Start difference. First operand 550 states and 635 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:27,614 INFO L93 Difference]: Finished difference Result 1037 states and 1200 transitions. [2021-11-07 01:07:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 01:07:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:27,620 INFO L225 Difference]: With dead ends: 1037 [2021-11-07 01:07:27,621 INFO L226 Difference]: Without dead ends: 1037 [2021-11-07 01:07:27,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:07:27,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-11-07 01:07:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 548. [2021-11-07 01:07:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 317 states have (on average 1.996845425867508) internal successors, (633), 547 states have internal predecessors, (633), 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) [2021-11-07 01:07:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 633 transitions. [2021-11-07 01:07:27,637 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 633 transitions. Word has length 25 [2021-11-07 01:07:27,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:27,637 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 633 transitions. [2021-11-07 01:07:27,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:07:27,638 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 633 transitions. [2021-11-07 01:07:27,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:07:27,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:27,639 INFO L513 BasicCegarLoop]: 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, 1] [2021-11-07 01:07:27,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:27,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:27,852 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:07:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2130999031, now seen corresponding path program 1 times [2021-11-07 01:07:27,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:27,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337163231] [2021-11-07 01:07:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:27,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:27,867 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:07:27,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692043882] [2021-11-07 01:07:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:27,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:27,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:27,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:27,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:07:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:28,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 01:07:28,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:28,133 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:07:28,134 INFO L388 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-07 01:07:28,198 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:07:28,199 INFO L388 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-07 01:07:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:28,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:28,312 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-07 01:07:28,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2021-11-07 01:07:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:28,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:28,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337163231] [2021-11-07 01:07:28,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:07:28,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692043882] [2021-11-07 01:07:28,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692043882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:28,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:28,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-07 01:07:28,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068447249] [2021-11-07 01:07:28,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:07:28,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:07:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:07:28,346 INFO L87 Difference]: Start difference. First operand 548 states and 633 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-07 01:07:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:29,403 INFO L93 Difference]: Finished difference Result 1034 states and 1197 transitions. [2021-11-07 01:07:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:07:29,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 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 26 [2021-11-07 01:07:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:29,411 INFO L225 Difference]: With dead ends: 1034 [2021-11-07 01:07:29,411 INFO L226 Difference]: Without dead ends: 1034 [2021-11-07 01:07:29,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:07:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-11-07 01:07:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 545. [2021-11-07 01:07:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 317 states have (on average 1.9873817034700316) internal successors, (630), 544 states have internal predecessors, (630), 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) [2021-11-07 01:07:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 630 transitions. [2021-11-07 01:07:29,431 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 630 transitions. Word has length 26 [2021-11-07 01:07:29,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:29,432 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 630 transitions. [2021-11-07 01:07:29,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-07 01:07:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 630 transitions. [2021-11-07 01:07:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 01:07:29,434 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:29,434 INFO L513 BasicCegarLoop]: 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, 1] [2021-11-07 01:07:29,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:29,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-07 01:07:29,649 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:07:29,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2130999032, now seen corresponding path program 1 times [2021-11-07 01:07:29,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:29,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784254642] [2021-11-07 01:07:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:29,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:29,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:07:29,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898699035] [2021-11-07 01:07:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:29,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:29,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:29,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:29,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:07:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:30,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-07 01:07:30,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:30,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-11-07 01:07:30,474 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-07 01:07:30,475 INFO L388 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 1 case distinctions, treesize of input 49 treesize of output 47 [2021-11-07 01:07:30,527 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:07:30,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 51 [2021-11-07 01:07:30,898 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-07 01:07:30,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 60 [2021-11-07 01:07:30,931 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-07 01:07:30,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 62 [2021-11-07 01:07:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:35,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:36,255 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-11-07 01:07:36,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 43 [2021-11-07 01:07:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:07:36,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:36,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784254642] [2021-11-07 01:07:36,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:07:36,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898699035] [2021-11-07 01:07:36,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898699035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:36,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:36,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 01:07:36,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194462140] [2021-11-07 01:07:36,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:07:36,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:07:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=110, Unknown=1, NotChecked=0, Total=132 [2021-11-07 01:07:36,738 INFO L87 Difference]: Start difference. First operand 545 states and 630 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-11-07 01:08:08,564 WARN L207 SmtUtils]: Spent 19.07 s on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2021-11-07 01:08:26,443 WARN L207 SmtUtils]: Spent 9.49 s on a formula simplification. DAG size of input: 127 DAG size of output: 97 [2021-11-07 01:08:39,838 WARN L207 SmtUtils]: Spent 6.73 s on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-11-07 01:09:25,443 WARN L207 SmtUtils]: Spent 33.93 s on a formula simplification. DAG size of input: 115 DAG size of output: 95 [2021-11-07 01:10:28,173 WARN L207 SmtUtils]: Spent 19.57 s on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-11-07 01:12:33,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:33,544 INFO L93 Difference]: Finished difference Result 1036 states and 1199 transitions. [2021-11-07 01:12:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:12:33,547 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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 26 [2021-11-07 01:12:33,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:33,552 INFO L225 Difference]: With dead ends: 1036 [2021-11-07 01:12:33,553 INFO L226 Difference]: Without dead ends: 1036 [2021-11-07 01:12:33,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 109.5s TimeCoverageRelationStatistics Valid=97, Invalid=238, Unknown=7, NotChecked=0, Total=342 [2021-11-07 01:12:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-11-07 01:12:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 543. [2021-11-07 01:12:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 317 states have (on average 1.9810725552050472) internal successors, (628), 542 states have internal predecessors, (628), 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) [2021-11-07 01:12:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 628 transitions. [2021-11-07 01:12:33,569 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 628 transitions. Word has length 26 [2021-11-07 01:12:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:33,569 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 628 transitions. [2021-11-07 01:12:33,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-11-07 01:12:33,570 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 628 transitions. [2021-11-07 01:12:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:12:33,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:33,571 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1] [2021-11-07 01:12:33,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:33,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:33,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:12:33,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:33,792 INFO L85 PathProgramCache]: Analyzing trace with hash -337200019, now seen corresponding path program 1 times [2021-11-07 01:12:33,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:12:33,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696274144] [2021-11-07 01:12:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:33,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:12:33,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:12:33,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708377432] [2021-11-07 01:12:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:33,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:33,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:33,806 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:33,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 01:12:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:34,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-07 01:12:34,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:34,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:12:34,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-11-07 01:12:34,381 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:12:34,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 01:12:34,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-11-07 01:12:34,793 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-11-07 01:12:34,793 INFO L388 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 1 case distinctions, treesize of input 33 treesize of output 35 [2021-11-07 01:12:34,953 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-07 01:12:34,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-11-07 01:12:35,293 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-07 01:12:35,293 INFO L388 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 1 case distinctions, treesize of input 65 treesize of output 63 [2021-11-07 01:12:35,325 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-07 01:12:35,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 63 treesize of output 67 [2021-11-07 01:12:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:37,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:12:39,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:12:39,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696274144] [2021-11-07 01:12:39,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:12:39,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708377432] [2021-11-07 01:12:39,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708377432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:39,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:12:39,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-11-07 01:12:39,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70793977] [2021-11-07 01:12:39,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:12:39,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:12:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:12:39,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:12:39,283 INFO L87 Difference]: Start difference. First operand 543 states and 628 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 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) [2021-11-07 01:13:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:02,302 INFO L93 Difference]: Finished difference Result 1031 states and 1195 transitions. [2021-11-07 01:13:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:13:02,303 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 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 30 [2021-11-07 01:13:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:02,308 INFO L225 Difference]: With dead ends: 1031 [2021-11-07 01:13:02,308 INFO L226 Difference]: Without dead ends: 1031 [2021-11-07 01:13:02,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:13:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-11-07 01:13:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 538. [2021-11-07 01:13:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 317 states have (on average 1.9652996845425867) internal successors, (623), 537 states have internal predecessors, (623), 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) [2021-11-07 01:13:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 623 transitions. [2021-11-07 01:13:02,324 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 623 transitions. Word has length 30 [2021-11-07 01:13:02,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:02,324 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 623 transitions. [2021-11-07 01:13:02,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 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) [2021-11-07 01:13:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 623 transitions. [2021-11-07 01:13:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:13:02,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:02,326 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:02,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:02,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:02,552 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:13:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1863265880, now seen corresponding path program 1 times [2021-11-07 01:13:02,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:13:02,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336306194] [2021-11-07 01:13:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:02,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:13:02,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:13:02,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328949570] [2021-11-07 01:13:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:02,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:13:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:02,569 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:13:02,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 01:13:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:02,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 01:13:02,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:02,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-07 01:13:03,651 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:13:03,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 01:13:03,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-07 01:13:03,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-11-07 01:13:03,845 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-07 01:13:03,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 29 [2021-11-07 01:13:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:04,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:07,461 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-11-07 01:13:07,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 62 [2021-11-07 01:13:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:08,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:13:08,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336306194] [2021-11-07 01:13:08,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:13:08,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328949570] [2021-11-07 01:13:08,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328949570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:08,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:08,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-07 01:13:08,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665804680] [2021-11-07 01:13:08,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:13:08,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:13:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:13:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:13:08,766 INFO L87 Difference]: Start difference. First operand 538 states and 623 transitions. Second operand has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:14,945 INFO L93 Difference]: Finished difference Result 2177 states and 2536 transitions. [2021-11-07 01:14:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:14:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 01:14:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:14,958 INFO L225 Difference]: With dead ends: 2177 [2021-11-07 01:14:14,958 INFO L226 Difference]: Without dead ends: 2177 [2021-11-07 01:14:14,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=404, Invalid=1002, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 01:14:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2021-11-07 01:14:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 537. [2021-11-07 01:14:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 317 states have (on average 1.9621451104100947) internal successors, (622), 536 states have internal predecessors, (622), 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) [2021-11-07 01:14:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 622 transitions. [2021-11-07 01:14:14,985 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 622 transitions. Word has length 31 [2021-11-07 01:14:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:14,985 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 622 transitions. [2021-11-07 01:14:14,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 622 transitions. [2021-11-07 01:14:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:14:14,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:14,987 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:15,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:15,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:15,212 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:14:15,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash -360052323, now seen corresponding path program 1 times [2021-11-07 01:14:15,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:14:15,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778407831] [2021-11-07 01:14:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:15,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:14:15,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:14:15,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938804284] [2021-11-07 01:14:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:15,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:15,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:15,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:15,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 01:14:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:15,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 01:14:15,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:15,688 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:14:15,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 01:14:15,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:14:15,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778407831] [2021-11-07 01:14:15,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:14:15,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938804284] [2021-11-07 01:14:15,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_calloc_model_~ptr~0.base] [2021-11-07 01:14:15,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832853130] [2021-11-07 01:14:15,778 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2021-11-07 01:14:15,778 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:14:15,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:14:15,788 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:14:15,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:14:15,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,862 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:15,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:14:15,867 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:15,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:14:15,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 01:14:15,883 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_341|], 21=[|v_#valid_445|]} [2021-11-07 01:14:15,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:14:15,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:14:15,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:14:15,904 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:15,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:15,931 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:15,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:14:15,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:14:15,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:14:15,971 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:15,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:15,998 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:15,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:16,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-07 01:14:16,001 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:14:16,002 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:133, output treesize:108 [2021-11-07 01:14:16,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:16,015 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:16,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:16,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:14:16,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-11-07 01:14:16,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:16,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:16,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:16,055 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 01:14:16,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-07 01:14:16,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:16,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:14:16,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:16,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:14:16,059 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:16,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:16,077 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:16,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:16,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-07 01:14:16,084 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:14:16,085 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:178, output treesize:177 [2021-11-07 01:14:16,114 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:14:17,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [832853130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:17,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:17,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:14:17,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178397206] [2021-11-07 01:14:17,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:14:17,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:14:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:14:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:14:17,759 INFO L87 Difference]: Start difference. First operand 537 states and 622 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:19,554 INFO L93 Difference]: Finished difference Result 543 states and 629 transitions. [2021-11-07 01:14:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:19,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 01:14:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:19,558 INFO L225 Difference]: With dead ends: 543 [2021-11-07 01:14:19,558 INFO L226 Difference]: Without dead ends: 543 [2021-11-07 01:14:19,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:14:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-07 01:14:19,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2021-11-07 01:14:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 321 states have (on average 1.9501557632398754) internal successors, (626), 540 states have internal predecessors, (626), 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) [2021-11-07 01:14:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 626 transitions. [2021-11-07 01:14:19,569 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 626 transitions. Word has length 34 [2021-11-07 01:14:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:19,569 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 626 transitions. [2021-11-07 01:14:19,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 626 transitions. [2021-11-07 01:14:19,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 01:14:19,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:19,570 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:19,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:19,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 01:14:19,784 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:14:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:19,785 INFO L85 PathProgramCache]: Analyzing trace with hash -174446681, now seen corresponding path program 1 times [2021-11-07 01:14:19,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:14:19,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507191284] [2021-11-07 01:14:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:19,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:14:19,797 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:14:19,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663027249] [2021-11-07 01:14:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:19,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:19,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:19,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:19,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:14:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:20,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 01:14:20,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:20,253 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:14:20,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 01:14:20,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:14:20,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507191284] [2021-11-07 01:14:20,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:14:20,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663027249] [2021-11-07 01:14:20,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_calloc_model_~ptr~0.base] [2021-11-07 01:14:20,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [439376253] [2021-11-07 01:14:20,316 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2021-11-07 01:14:20,316 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:14:20,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:14:20,317 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:14:20,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:14:20,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,330 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:14:20,332 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:14:20,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-07 01:14:20,336 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_343|], 21=[|v_#valid_449|]} [2021-11-07 01:14:20,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:14:20,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:14:20,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:14:20,353 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,358 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:14:20,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:14:20,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:14:20,399 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,410 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-07 01:14:20,414 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,414 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:133, output treesize:108 [2021-11-07 01:14:20,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,422 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:14:20,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-11-07 01:14:20,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,463 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-07 01:14:20,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 32 [2021-11-07 01:14:20,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:14:20,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-07 01:14:20,467 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,477 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-07 01:14:20,483 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,483 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:178, output treesize:177 [2021-11-07 01:14:20,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,505 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-07 01:14:20,506 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-07 01:14:20,508 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:14:20,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 256 [2021-11-07 01:14:20,515 INFO L446 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_253|, |v_#memory_$Pointer$.base_253|], 6=[|v_#memory_int_90|]} [2021-11-07 01:14:20,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-07 01:14:20,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:14:20,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:14:20,538 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-07 01:14:20,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 01:14:20,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 01:14:20,574 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:20,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-07 01:14:20,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:14:20,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:14:20,612 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,627 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-07 01:14:20,635 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:14:20,635 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:250, output treesize:238 [2021-11-07 01:14:20,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:20,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,849 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,862 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,870 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:14:20,871 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-07 01:14:20,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 462 [2021-11-07 01:14:20,880 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 445 [2021-11-07 01:14:20,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 446 [2021-11-07 01:14:20,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,912 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,919 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:14:20,921 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:14:20,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 466 [2021-11-07 01:14:20,929 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 447 [2021-11-07 01:14:20,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 448 [2021-11-07 01:14:20,948 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,961 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,968 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:14:20,970 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-07 01:14:20,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 462 [2021-11-07 01:14:20,978 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:20,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:20,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 445 [2021-11-07 01:14:20,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 446 [2021-11-07 01:14:21,003 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,030 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-07 01:14:21,031 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:14:21,033 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:14:21,034 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-07 01:14:21,036 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-07 01:14:21,037 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:14:21,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 530 [2021-11-07 01:14:21,046 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 475 [2021-11-07 01:14:21,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 609 [2021-11-07 01:14:21,079 INFO L446 ElimStorePlain]: Different costs {6=[|v_#memory_$Pointer$.offset_254|, |v_#memory_$Pointer$.base_254|], 12=[|v_#memory_int_91|]} [2021-11-07 01:14:21,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-07 01:14:21,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:14:21,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:14:21,140 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-07 01:14:21,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:14:21,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:14:21,178 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,287 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-07 01:14:21,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:14:21,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-07 01:14:21,345 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-07 01:14:21,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 01:14:21,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 01:14:21,378 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-07 01:14:21,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:14:21,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-07 01:14:21,564 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:14:21,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-07 01:14:21,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:14:21,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:14:21,607 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,750 INFO L180 QuantifierPusher]: treesize reduction 124, result has 83.6 percent of original size [2021-11-07 01:14:21,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 634 [2021-11-07 01:14:21,764 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-07 01:14:21,765 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:782, output treesize:634 [2021-11-07 01:14:21,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,911 INFO L180 QuantifierPusher]: treesize reduction 54, result has 73.7 percent of original size [2021-11-07 01:14:21,913 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-07 01:14:21,914 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-07 01:14:21,915 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:21,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:14:21,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-11-07 01:14:21,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-07 01:14:21,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:14:21,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:14:21,936 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,944 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 01:14:21,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:14:21,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:14:21,956 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-07 01:14:21,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:14:21,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:14:21,978 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:21,985 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:21,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-11-07 01:14:21,990 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:14:21,990 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:150, output treesize:138 [2021-11-07 01:14:22,012 INFO L180 QuantifierPusher]: treesize reduction 55, result has 79.9 percent of original size [2021-11-07 01:14:22,017 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:22,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:14:22,025 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:14:22,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-11-07 01:14:22,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-07 01:14:22,036 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_345|], 1=[|v_#valid_451|]} [2021-11-07 01:14:22,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-07 01:14:22,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:14:22,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:14:22,048 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:22,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:22,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-07 01:14:22,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 01:14:22,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-07 01:14:22,072 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:14:22,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:14:22,099 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:14:22,104 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:14:22,105 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:146, output treesize:139 [2021-11-07 01:14:22,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:14:22,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-11-07 01:14:22,218 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:14:25,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [439376253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:25,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:25,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:14:25,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382074122] [2021-11-07 01:14:25,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:25,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:14:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:14:25,389 INFO L87 Difference]: Start difference. First operand 541 states and 626 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-11-07 01:14:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:32,557 INFO L93 Difference]: Finished difference Result 559 states and 649 transitions. [2021-11-07 01:14:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:14:32,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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 35 [2021-11-07 01:14:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:32,561 INFO L225 Difference]: With dead ends: 559 [2021-11-07 01:14:32,561 INFO L226 Difference]: Without dead ends: 559 [2021-11-07 01:14:32,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:14:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-07 01:14:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 546. [2021-11-07 01:14:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 326 states have (on average 1.9386503067484662) internal successors, (632), 545 states have internal predecessors, (632), 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) [2021-11-07 01:14:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 632 transitions. [2021-11-07 01:14:32,575 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 632 transitions. Word has length 35 [2021-11-07 01:14:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:32,575 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 632 transitions. [2021-11-07 01:14:32,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-11-07 01:14:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 632 transitions. [2021-11-07 01:14:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:14:32,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:32,577 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:32,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:32,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:32,793 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:14:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1341047500, now seen corresponding path program 1 times [2021-11-07 01:14:32,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:14:32,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116072228] [2021-11-07 01:14:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:32,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:14:32,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:14:32,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062014846] [2021-11-07 01:14:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:32,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:32,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:32,809 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:32,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 01:14:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:33,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-07 01:14:33,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:33,238 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:14:33,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-07 01:14:33,338 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-07 01:14:33,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-11-07 01:14:34,179 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-07 01:14:34,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 42 [2021-11-07 01:14:34,426 INFO L354 Elim1Store]: treesize reduction 104, result has 16.8 percent of original size [2021-11-07 01:14:34,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 case distinctions, treesize of input 39 treesize of output 50 [2021-11-07 01:14:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:14:37,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:37,923 INFO L354 Elim1Store]: treesize reduction 39, result has 20.4 percent of original size [2021-11-07 01:14:37,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 44 treesize of output 45 [2021-11-07 01:14:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:14:37,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:14:37,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116072228] [2021-11-07 01:14:37,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:14:37,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062014846] [2021-11-07 01:14:37,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062014846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:37,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:37,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 18 [2021-11-07 01:14:37,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22352612] [2021-11-07 01:14:37,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:14:37,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:14:37,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:14:37,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:14:37,943 INFO L87 Difference]: Start difference. First operand 546 states and 632 transitions. Second operand has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 19 states have internal predecessors, (65), 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) [2021-11-07 01:14:51,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:51,204 INFO L93 Difference]: Finished difference Result 1025 states and 1188 transitions. [2021-11-07 01:14:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:14:51,205 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 19 states have internal predecessors, (65), 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 36 [2021-11-07 01:14:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:51,210 INFO L225 Difference]: With dead ends: 1025 [2021-11-07 01:14:51,210 INFO L226 Difference]: Without dead ends: 1025 [2021-11-07 01:14:51,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=221, Invalid=478, Unknown=3, NotChecked=0, Total=702 [2021-11-07 01:14:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-11-07 01:14:51,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 543. [2021-11-07 01:14:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 326 states have (on average 1.9294478527607362) internal successors, (629), 542 states have internal predecessors, (629), 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) [2021-11-07 01:14:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 629 transitions. [2021-11-07 01:14:51,225 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 629 transitions. Word has length 36 [2021-11-07 01:14:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:51,226 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 629 transitions. [2021-11-07 01:14:51,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.611111111111111) internal successors, (65), 19 states have internal predecessors, (65), 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) [2021-11-07 01:14:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 629 transitions. [2021-11-07 01:14:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:14:51,227 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:51,228 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:51,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-07 01:14:51,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-07 01:14:51,444 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2021-11-07 01:14:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1341047501, now seen corresponding path program 1 times [2021-11-07 01:14:51,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:14:51,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261932700] [2021-11-07 01:14:51,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:51,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:14:51,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:14:51,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438405215] [2021-11-07 01:14:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:51,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:51,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:51,461 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:51,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7798e7fd-98a0-402c-9270-d174a03b0a31/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:14:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:52,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 01:14:52,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:52,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2021-11-07 01:14:52,507 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-11-07 01:14:52,507 INFO L388 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 1 case distinctions, treesize of input 49 treesize of output 47 [2021-11-07 01:14:52,528 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-07 01:14:52,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 51 [2021-11-07 01:14:52,933 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-07 01:14:52,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 66 [2021-11-07 01:14:52,994 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-07 01:14:52,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 77 [2021-11-07 01:14:53,824 INFO L354 Elim1Store]: treesize reduction 60, result has 31.8 percent of original size [2021-11-07 01:14:53,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 96 [2021-11-07 01:14:53,913 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-07 01:14:53,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 104 [2021-11-07 01:14:55,940 INFO L354 Elim1Store]: treesize reduction 72, result has 18.2 percent of original size [2021-11-07 01:14:55,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 99 [2021-11-07 01:14:55,987 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-07 01:14:55,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 99 treesize of output 105 [2021-11-07 01:15:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:15:24,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:38,491 INFO L354 Elim1Store]: treesize reduction 39, result has 20.4 percent of original size [2021-11-07 01:15:38,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 94 [2021-11-07 01:15:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:15:46,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:15:46,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261932700] [2021-11-07 01:15:46,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:15:46,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438405215] [2021-11-07 01:15:46,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438405215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:15:46,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:15:46,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-11-07 01:15:46,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120769996] [2021-11-07 01:15:46,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:15:46,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:15:46,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:15:46,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=331, Unknown=8, NotChecked=0, Total=380 [2021-11-07 01:15:46,024 INFO L87 Difference]: Start difference. First operand 543 states and 629 transitions. Second operand has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 20 states have internal predecessors, (66), 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) [2021-11-07 01:17:47,571 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_calloc_model_~ptr~0.offset 0) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| c_ULTIMATE.start_calloc_model_~ptr~0.base) (= (select |c_#valid| c_ULTIMATE.start_l1_insert_~item~3.base) 1) (= (select |c_#valid| c_ULTIMATE.start_calloc_model_~ptr~0.base) 1) (forall ((v_ULTIMATE.start_calloc_model_~size_47 Int) (v_ULTIMATE.start_calloc_model_~size_46 Int) (v_ULTIMATE.start_calloc_model_~size_48 Int) (v_ULTIMATE.start_calloc_model_~size_45 Int) (v_ULTIMATE.start_calloc_model_~nmemb_45 Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_99 Int) (v_ULTIMATE.start_calloc_model_~nmemb_47 Int) (v_ULTIMATE.start_calloc_model_~nmemb_46 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_97 Int) (v_ULTIMATE.start_calloc_model_~nmemb_48 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_98 Int)) (let ((.cse0 (store (store (store (store |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_99 (* v_ULTIMATE.start_calloc_model_~nmemb_48 v_ULTIMATE.start_calloc_model_~size_48)) v_ULTIMATE.start_calloc_model_~ptr~0.base_98 (* v_ULTIMATE.start_calloc_model_~nmemb_47 v_ULTIMATE.start_calloc_model_~size_47)) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 (* v_ULTIMATE.start_calloc_model_~nmemb_46 v_ULTIMATE.start_calloc_model_~size_46)) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| (* v_ULTIMATE.start_calloc_model_~nmemb_45 v_ULTIMATE.start_calloc_model_~size_45)))) (or (< (select .cse0 v_ULTIMATE.start_calloc_model_~ptr~0.base_97) 8) (= v_ULTIMATE.start_calloc_model_~ptr~0.base_99 v_ULTIMATE.start_calloc_model_~ptr~0.base_98) (= |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| v_ULTIMATE.start_calloc_model_~ptr~0.base_98) (= |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| v_ULTIMATE.start_calloc_model_~ptr~0.base_97) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| v_ULTIMATE.start_calloc_model_~ptr~0.base_99) (= |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| v_ULTIMATE.start_calloc_model_~ptr~0.base_98) (and (<= 0 c_ULTIMATE.start_calloc_model_~ptr~0.offset) (<= (+ c_ULTIMATE.start_calloc_model_~ptr~0.offset 4) (select .cse0 c_ULTIMATE.start_calloc_model_~ptr~0.base))) (= |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| v_ULTIMATE.start_calloc_model_~ptr~0.base_99)))) (forall ((v_ULTIMATE.start_calloc_model_~size_47 Int) (v_ULTIMATE.start_calloc_model_~size_46 Int) (v_ULTIMATE.start_calloc_model_~size_48 Int) (v_ULTIMATE.start_calloc_model_~size_45 Int) (v_ULTIMATE.start_calloc_model_~nmemb_45 Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_99 Int) (v_ULTIMATE.start_calloc_model_~nmemb_47 Int) (v_ULTIMATE.start_calloc_model_~nmemb_46 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_97 Int) (v_ULTIMATE.start_calloc_model_~nmemb_48 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_98 Int)) (let ((.cse1 (store |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_99 1)) (.cse2 (store (store (store (store |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_99 (* v_ULTIMATE.start_calloc_model_~nmemb_48 v_ULTIMATE.start_calloc_model_~size_48)) v_ULTIMATE.start_calloc_model_~ptr~0.base_98 (* v_ULTIMATE.start_calloc_model_~nmemb_47 v_ULTIMATE.start_calloc_model_~size_47)) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 (* v_ULTIMATE.start_calloc_model_~nmemb_46 v_ULTIMATE.start_calloc_model_~size_46)) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| (* v_ULTIMATE.start_calloc_model_~nmemb_45 v_ULTIMATE.start_calloc_model_~size_45)))) (or (not (= 0 (select .cse1 v_ULTIMATE.start_calloc_model_~ptr~0.base_98))) (< (select .cse2 v_ULTIMATE.start_calloc_model_~ptr~0.base_97) 8) (not (= (select (store (store .cse1 v_ULTIMATE.start_calloc_model_~ptr~0.base_98 1) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 1) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111|) 0)) (not (= (select |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_99) 0)) (and (<= 0 c_ULTIMATE.start_calloc_model_~ptr~0.offset) (<= (+ c_ULTIMATE.start_calloc_model_~ptr~0.offset 4) (select .cse2 c_ULTIMATE.start_calloc_model_~ptr~0.base)))))) (= c_ULTIMATE.start_l1_insert_~item~3.offset 0) (or (= (select |c_#length| c_ULTIMATE.start_calloc_model_~ptr~0.base) 0) (exists ((|ULTIMATE.start_calloc_model_#in~nmemb| Int)) (let ((.cse3 (select |c_#length| c_ULTIMATE.start_calloc_model_~ptr~0.base))) (and (<= 1 |ULTIMATE.start_calloc_model_#in~nmemb|) (<= 8 (div .cse3 |ULTIMATE.start_calloc_model_#in~nmemb|)) (= (mod .cse3 |ULTIMATE.start_calloc_model_#in~nmemb|) 0))))) (or (exists ((|ULTIMATE.start_calloc_model_#in~nmemb| Int)) (let ((.cse4 (select |c_#length| c_ULTIMATE.start_l1_insert_~item~3.base))) (and (= (mod .cse4 |ULTIMATE.start_calloc_model_#in~nmemb|) 0) (<= 8 (div .cse4 |ULTIMATE.start_calloc_model_#in~nmemb|)) (<= 1 |ULTIMATE.start_calloc_model_#in~nmemb|)))) (= (select |c_#length| c_ULTIMATE.start_l1_insert_~item~3.base) 0)) (forall ((v_ULTIMATE.start_calloc_model_~size_47 Int) (v_ULTIMATE.start_calloc_model_~size_46 Int) (v_ULTIMATE.start_calloc_model_~size_48 Int) (v_ULTIMATE.start_calloc_model_~size_45 Int) (v_ULTIMATE.start_calloc_model_~nmemb_45 Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_99 Int) (v_ULTIMATE.start_calloc_model_~nmemb_47 Int) (v_ULTIMATE.start_calloc_model_~nmemb_46 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_97 Int) (v_ULTIMATE.start_calloc_model_~nmemb_48 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_98 Int)) (let ((.cse5 (store |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_99 1)) (.cse6 (store (store (store (store |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_99 (* v_ULTIMATE.start_calloc_model_~nmemb_48 v_ULTIMATE.start_calloc_model_~size_48)) v_ULTIMATE.start_calloc_model_~ptr~0.base_98 (* v_ULTIMATE.start_calloc_model_~nmemb_47 v_ULTIMATE.start_calloc_model_~size_47)) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 (* v_ULTIMATE.start_calloc_model_~nmemb_46 v_ULTIMATE.start_calloc_model_~size_46)) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| (* v_ULTIMATE.start_calloc_model_~nmemb_45 v_ULTIMATE.start_calloc_model_~size_45)))) (or (not (= 0 (select .cse5 v_ULTIMATE.start_calloc_model_~ptr~0.base_98))) (< (select .cse6 v_ULTIMATE.start_calloc_model_~ptr~0.base_97) 8) (not (= (select (store (store .cse5 v_ULTIMATE.start_calloc_model_~ptr~0.base_98 1) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 1) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111|) 0)) (not (= (select |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_99) 0)) (and (<= 0 c_ULTIMATE.start_l1_insert_~item~3.offset) (<= (+ c_ULTIMATE.start_l1_insert_~item~3.offset 4) (select .cse6 c_ULTIMATE.start_l1_insert_~item~3.base))))))) is different from false [2021-11-07 01:19:44,963 WARN L207 SmtUtils]: Spent 1.11 m on a formula simplification. DAG size of input: 144 DAG size of output: 134 [2021-11-07 01:20:35,560 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((|ULTIMATE.start_calloc_model_#in~nmemb| Int)) (let ((.cse8 (select |c_#length| c_ULTIMATE.start_l2_insert_~list.base))) (and (<= 1 |ULTIMATE.start_calloc_model_#in~nmemb|) (<= 8 (div .cse8 |ULTIMATE.start_calloc_model_#in~nmemb|)) (= (mod .cse8 |ULTIMATE.start_calloc_model_#in~nmemb|) 0))))) (.cse1 (= (select |c_#length| c_ULTIMATE.start_l2_insert_~list.base) 0))) (and (= c_ULTIMATE.start_calloc_model_~ptr~0.offset 0) (or .cse0 .cse1 (= c_ULTIMATE.start_l2_insert_~list.base c_ULTIMATE.start_calloc_model_~ptr~0.base)) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| c_ULTIMATE.start_calloc_model_~ptr~0.base) (or .cse0 .cse1) (= (select |c_#valid| c_ULTIMATE.start_calloc_model_~ptr~0.base) 1) (exists ((ULTIMATE.start_calloc_model_~ptr~0.base Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_93 Int) (ULTIMATE.start_calloc_model_~size Int) (v_ULTIMATE.start_calloc_model_~nmemb_43 Int) (v_ULTIMATE.start_calloc_model_~size_43 Int) (ULTIMATE.start_calloc_model_~nmemb Int)) (and (not (= c_ULTIMATE.start_l2_insert_~list.base v_ULTIMATE.start_calloc_model_~ptr~0.base_93)) (= (* ULTIMATE.start_calloc_model_~size ULTIMATE.start_calloc_model_~nmemb) (select |c_#length| ULTIMATE.start_calloc_model_~ptr~0.base)) (= (select |c_#valid| ULTIMATE.start_calloc_model_~ptr~0.base) 1) (not (= c_ULTIMATE.start_l2_insert_~list.base ULTIMATE.start_calloc_model_~ptr~0.base)) (= (select |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_93) (* v_ULTIMATE.start_calloc_model_~nmemb_43 v_ULTIMATE.start_calloc_model_~size_43)) (not (= v_ULTIMATE.start_calloc_model_~ptr~0.base_93 ULTIMATE.start_calloc_model_~ptr~0.base)) (= (select |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_93) 1))) (forall ((v_ULTIMATE.start_calloc_model_~size_47 Int) (v_ULTIMATE.start_calloc_model_~size_46 Int) (v_ULTIMATE.start_calloc_model_~size_48 Int) (v_ULTIMATE.start_calloc_model_~size_45 Int) (v_ULTIMATE.start_calloc_model_~nmemb_45 Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_99 Int) (v_ULTIMATE.start_calloc_model_~nmemb_47 Int) (v_ULTIMATE.start_calloc_model_~nmemb_46 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_97 Int) (v_ULTIMATE.start_calloc_model_~nmemb_48 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_98 Int)) (let ((.cse2 (store (store (store (store |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_99 (* v_ULTIMATE.start_calloc_model_~nmemb_48 v_ULTIMATE.start_calloc_model_~size_48)) v_ULTIMATE.start_calloc_model_~ptr~0.base_98 (* v_ULTIMATE.start_calloc_model_~nmemb_47 v_ULTIMATE.start_calloc_model_~size_47)) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 (* v_ULTIMATE.start_calloc_model_~nmemb_46 v_ULTIMATE.start_calloc_model_~size_46)) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| (* v_ULTIMATE.start_calloc_model_~nmemb_45 v_ULTIMATE.start_calloc_model_~size_45)))) (or (< (select .cse2 v_ULTIMATE.start_calloc_model_~ptr~0.base_97) 8) (= v_ULTIMATE.start_calloc_model_~ptr~0.base_99 v_ULTIMATE.start_calloc_model_~ptr~0.base_98) (= |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| v_ULTIMATE.start_calloc_model_~ptr~0.base_98) (= |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| v_ULTIMATE.start_calloc_model_~ptr~0.base_97) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| v_ULTIMATE.start_calloc_model_~ptr~0.base_99) (= |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| v_ULTIMATE.start_calloc_model_~ptr~0.base_98) (and (<= 0 c_ULTIMATE.start_calloc_model_~ptr~0.offset) (<= (+ c_ULTIMATE.start_calloc_model_~ptr~0.offset 4) (select .cse2 c_ULTIMATE.start_calloc_model_~ptr~0.base))) (= |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| v_ULTIMATE.start_calloc_model_~ptr~0.base_99)))) (forall ((v_ULTIMATE.start_calloc_model_~nmemb_45 Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| Int) (v_ULTIMATE.start_calloc_model_~size_45 Int)) (let ((.cse3 (store |c_#length| |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| (* v_ULTIMATE.start_calloc_model_~nmemb_45 v_ULTIMATE.start_calloc_model_~size_45)))) (or (and (<= 0 c_ULTIMATE.start_l2_insert_~list.offset) (<= (+ 4 c_ULTIMATE.start_l2_insert_~list.offset) (select .cse3 c_ULTIMATE.start_l2_insert_~list.base))) (< (select .cse3 c_ULTIMATE.start_calloc_model_~ptr~0.base) 8) (not (= (select |c_#valid| |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111|) 0))))) (forall ((v_ULTIMATE.start_calloc_model_~size_47 Int) (v_ULTIMATE.start_calloc_model_~size_46 Int) (v_ULTIMATE.start_calloc_model_~size_48 Int) (v_ULTIMATE.start_calloc_model_~size_45 Int) (v_ULTIMATE.start_calloc_model_~nmemb_45 Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_99 Int) (v_ULTIMATE.start_calloc_model_~nmemb_47 Int) (v_ULTIMATE.start_calloc_model_~nmemb_46 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_97 Int) (v_ULTIMATE.start_calloc_model_~nmemb_48 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_98 Int)) (let ((.cse4 (store |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_99 1)) (.cse5 (store (store (store (store |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_99 (* v_ULTIMATE.start_calloc_model_~nmemb_48 v_ULTIMATE.start_calloc_model_~size_48)) v_ULTIMATE.start_calloc_model_~ptr~0.base_98 (* v_ULTIMATE.start_calloc_model_~nmemb_47 v_ULTIMATE.start_calloc_model_~size_47)) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 (* v_ULTIMATE.start_calloc_model_~nmemb_46 v_ULTIMATE.start_calloc_model_~size_46)) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| (* v_ULTIMATE.start_calloc_model_~nmemb_45 v_ULTIMATE.start_calloc_model_~size_45)))) (or (not (= 0 (select .cse4 v_ULTIMATE.start_calloc_model_~ptr~0.base_98))) (< (select .cse5 v_ULTIMATE.start_calloc_model_~ptr~0.base_97) 8) (not (= (select (store (store .cse4 v_ULTIMATE.start_calloc_model_~ptr~0.base_98 1) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 1) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111|) 0)) (not (= (select |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_99) 0)) (and (<= 0 c_ULTIMATE.start_calloc_model_~ptr~0.offset) (<= (+ c_ULTIMATE.start_calloc_model_~ptr~0.offset 4) (select .cse5 c_ULTIMATE.start_calloc_model_~ptr~0.base)))))) (= (select |c_#valid| c_ULTIMATE.start_l2_insert_~list.base) 1) (or (= (select |c_#length| c_ULTIMATE.start_calloc_model_~ptr~0.base) 0) (exists ((|ULTIMATE.start_calloc_model_#in~nmemb| Int)) (let ((.cse6 (select |c_#length| c_ULTIMATE.start_calloc_model_~ptr~0.base))) (and (<= 1 |ULTIMATE.start_calloc_model_#in~nmemb|) (<= 8 (div .cse6 |ULTIMATE.start_calloc_model_#in~nmemb|)) (= (mod .cse6 |ULTIMATE.start_calloc_model_#in~nmemb|) 0))))) (= c_ULTIMATE.start_l2_insert_~list.offset 0) (forall ((v_ULTIMATE.start_calloc_model_~size_47 Int) (v_ULTIMATE.start_calloc_model_~nmemb_45 Int) (v_ULTIMATE.start_calloc_model_~size_46 Int) (|v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| Int) (v_ULTIMATE.start_calloc_model_~nmemb_47 Int) (v_ULTIMATE.start_calloc_model_~nmemb_46 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_97 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_98 Int) (v_ULTIMATE.start_calloc_model_~size_45 Int)) (let ((.cse7 (store (store (store |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_98 (* v_ULTIMATE.start_calloc_model_~nmemb_47 v_ULTIMATE.start_calloc_model_~size_47)) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 (* v_ULTIMATE.start_calloc_model_~nmemb_46 v_ULTIMATE.start_calloc_model_~size_46)) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111| (* v_ULTIMATE.start_calloc_model_~nmemb_45 v_ULTIMATE.start_calloc_model_~size_45)))) (or (not (= 0 (select (store (store |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_98 1) v_ULTIMATE.start_calloc_model_~ptr~0.base_97 1) |v_ULTIMATE.start_#Ultimate.C_memset_#ptr.base_111|))) (and (<= 0 c_ULTIMATE.start_l2_insert_~list.offset) (<= (+ 4 c_ULTIMATE.start_l2_insert_~list.offset) (select .cse7 c_ULTIMATE.start_l2_insert_~list.base))) (not (= (select |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_98) 0)) (< (select .cse7 v_ULTIMATE.start_calloc_model_~ptr~0.base_97) 8)))) (exists ((v_ULTIMATE.start_calloc_model_~ptr~0.base_93 Int) (v_ULTIMATE.start_calloc_model_~ptr~0.base_94 Int)) (and (not (= c_ULTIMATE.start_l2_insert_~list.base v_ULTIMATE.start_calloc_model_~ptr~0.base_93)) (not (= c_ULTIMATE.start_l2_insert_~list.base v_ULTIMATE.start_calloc_model_~ptr~0.base_94)) (or (exists ((v_ULTIMATE.start_calloc_model_~nmemb_43 Int) (v_ULTIMATE.start_calloc_model_~size_43 Int)) (= (select |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_93) (* v_ULTIMATE.start_calloc_model_~nmemb_43 v_ULTIMATE.start_calloc_model_~size_43))) (= v_ULTIMATE.start_calloc_model_~ptr~0.base_93 c_ULTIMATE.start_calloc_model_~ptr~0.base)) (not (= v_ULTIMATE.start_calloc_model_~ptr~0.base_94 v_ULTIMATE.start_calloc_model_~ptr~0.base_93)) (= (select |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_93) 1) (or (= v_ULTIMATE.start_calloc_model_~ptr~0.base_94 c_ULTIMATE.start_calloc_model_~ptr~0.base) (exists ((v_ULTIMATE.start_calloc_model_~nmemb_44 Int) (v_ULTIMATE.start_calloc_model_~size_44 Int)) (= (select |c_#length| v_ULTIMATE.start_calloc_model_~ptr~0.base_94) (* v_ULTIMATE.start_calloc_model_~nmemb_44 v_ULTIMATE.start_calloc_model_~size_44)))) (= (select |c_#valid| v_ULTIMATE.start_calloc_model_~ptr~0.base_94) 1))))) is different from false