./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 516828c2d0e4e4ea6fd7a5826d09ca378c2c75a9f8159cf96c4b4e28ff76714b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:21:01,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:21:01,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:21:01,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:21:01,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:21:01,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:21:01,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:21:01,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:21:01,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:21:01,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:21:01,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:21:01,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:21:01,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:21:01,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:21:01,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:21:01,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:21:01,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:21:01,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:21:01,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:21:01,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:21:01,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:21:01,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:21:01,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:21:01,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:21:01,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:21:01,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:21:01,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:21:01,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:21:01,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:21:01,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:21:01,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:21:01,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:21:01,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:21:01,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:21:01,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:21:01,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:21:01,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:21:01,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:21:01,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:21:01,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:21:01,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:21:01,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 20:21:01,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:21:01,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:21:01,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:21:01,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:21:01,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:21:01,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:21:01,496 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:21:01,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:21:01,496 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:21:01,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:21:01,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:21:01,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:21:01,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:21:01,498 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:21:01,498 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:21:01,498 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 20:21:01,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:21:01,499 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:21:01,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:21:01,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:21:01,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:21:01,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:21:01,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:21:01,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:01,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:21:01,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:21:01,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:21:01,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:21:01,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:21:01,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516828c2d0e4e4ea6fd7a5826d09ca378c2c75a9f8159cf96c4b4e28ff76714b [2021-10-21 20:21:01,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:21:01,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:21:01,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:21:01,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:21:01,795 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:21:01,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-10-21 20:21:01,891 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/data/3f21c69cf/c268deba6e6340d59b74cc892d9417be/FLAG25be6cf72 [2021-10-21 20:21:02,469 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:21:02,470 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-10-21 20:21:02,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/data/3f21c69cf/c268deba6e6340d59b74cc892d9417be/FLAG25be6cf72 [2021-10-21 20:21:02,737 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/data/3f21c69cf/c268deba6e6340d59b74cc892d9417be [2021-10-21 20:21:02,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:21:02,742 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:21:02,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:02,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:21:02,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:21:02,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8b7651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:02, skipping insertion in model container [2021-10-21 20:21:02,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:02" (1/1) ... [2021-10-21 20:21:02,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:21:02,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:21:03,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:03,267 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:21:03,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:03,363 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:21:03,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03 WrapperNode [2021-10-21 20:21:03,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:03,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:21:03,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:21:03,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:21:03,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (1/1) ... [2021-10-21 20:21:03,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (1/1) ... [2021-10-21 20:21:03,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (1/1) ... [2021-10-21 20:21:03,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (1/1) ... [2021-10-21 20:21:03,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (1/1) ... [2021-10-21 20:21:03,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (1/1) ... [2021-10-21 20:21:03,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (1/1) ... [2021-10-21 20:21:03,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:21:03,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:21:03,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:21:03,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:21:03,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (1/1) ... [2021-10-21 20:21:03,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:03,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:03,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:21:03,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:21:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:21:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:21:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:21:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:21:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:21:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:21:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:21:03,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:21:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:21:03,504 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:21:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:21:03,506 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:21:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:21:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:21:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:21:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:21:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:21:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:21:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:21:03,507 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:21:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:21:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:21:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:21:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:21:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:21:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:21:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:21:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:21:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:21:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:21:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:21:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:21:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:21:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:21:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:21:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:21:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:21:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:21:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:21:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:21:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:21:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:21:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:21:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:21:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:21:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:21:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:21:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:21:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:21:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:21:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:21:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:21:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:21:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:21:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:21:03,518 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:21:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:21:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:21:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:21:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:21:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:21:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:21:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:21:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:21:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:21:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:21:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:21:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:21:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:21:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:21:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:21:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:21:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:21:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:21:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:21:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:21:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:21:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:21:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:21:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:21:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:21:03,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:21:03,963 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-21 20:21:03,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:03 BoogieIcfgContainer [2021-10-21 20:21:03,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:21:03,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:21:03,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:21:03,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:21:03,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:21:02" (1/3) ... [2021-10-21 20:21:03,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794d8d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:03, skipping insertion in model container [2021-10-21 20:21:03,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:03" (2/3) ... [2021-10-21 20:21:03,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794d8d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:03, skipping insertion in model container [2021-10-21 20:21:03,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:03" (3/3) ... [2021-10-21 20:21:03,990 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2021-10-21 20:21:03,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:21:03,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-21 20:21:04,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:21:04,048 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 [2021-10-21 20:21:04,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 20:21:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:21:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:21:04,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:04,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:04,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2021-10-21 20:21:04,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:04,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211390229] [2021-10-21 20:21:04,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:04,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:04,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:04,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365194194] [2021-10-21 20:21:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:04,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:04,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:04,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:21:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:04,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:21:04,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:04,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:04,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211390229] [2021-10-21 20:21:04,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:04,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365194194] [2021-10-21 20:21:04,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365194194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:04,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:04,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:21:04,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061734654] [2021-10-21 20:21:04,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:21:04,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:21:04,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:21:04,720 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:04,792 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-21 20:21:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:21:04,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-21 20:21:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:04,803 INFO L225 Difference]: With dead ends: 33 [2021-10-21 20:21:04,803 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 20:21:04,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 20:21:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-21 20:21:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.5) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-21 20:21:04,842 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2021-10-21 20:21:04,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:04,843 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-21 20:21:04,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:04,843 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-21 20:21:04,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:21:04,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:04,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:04,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-21 20:21:05,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-21 20:21:05,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:05,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2021-10-21 20:21:05,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:05,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079044118] [2021-10-21 20:21:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:05,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:05,082 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:05,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032488858] [2021-10-21 20:21:05,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:05,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:05,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:05,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:05,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:21:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:05,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:21:05,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:05,344 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 20:21:05,346 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-21 20:21:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:05,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:05,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079044118] [2021-10-21 20:21:05,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:05,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032488858] [2021-10-21 20:21:05,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032488858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:05,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:05,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:21:05,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090354320] [2021-10-21 20:21:05,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:21:05,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:05,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:21:05,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:05,404 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:05,439 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-21 20:21:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:21:05,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-21 20:21:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:05,442 INFO L225 Difference]: With dead ends: 28 [2021-10-21 20:21:05,442 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 20:21:05,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 20:21:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-21 20:21:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-21 20:21:05,450 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2021-10-21 20:21:05,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:05,451 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-21 20:21:05,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-21 20:21:05,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:21:05,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:05,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:05,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:05,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:05,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:05,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2021-10-21 20:21:05,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:05,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531402355] [2021-10-21 20:21:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:05,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:05,700 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:05,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043245067] [2021-10-21 20:21:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:05,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:05,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:05,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:21:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:05,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:21:05,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:05,947 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-10-21 20:21:05,947 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 1 case distinctions, treesize of input 27 treesize of output 28 [2021-10-21 20:21:05,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-10-21 20:21:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:06,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:06,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531402355] [2021-10-21 20:21:06,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:06,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043245067] [2021-10-21 20:21:06,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043245067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:06,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:06,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:21:06,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173964826] [2021-10-21 20:21:06,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:21:06,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:21:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:06,261 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:06,417 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-21 20:21:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:06,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-21 20:21:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:06,419 INFO L225 Difference]: With dead ends: 32 [2021-10-21 20:21:06,419 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 20:21:06,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 20:21:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-21 20:21:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-21 20:21:06,425 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-10-21 20:21:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:06,425 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-21 20:21:06,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-21 20:21:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:21:06,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:06,427 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:06,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:06,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-21 20:21:06,628 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:06,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:06,629 INFO L82 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2021-10-21 20:21:06,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:06,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150552275] [2021-10-21 20:21:06,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:06,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:06,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:06,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414833616] [2021-10-21 20:21:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:06,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:06,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:06,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:06,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:21:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:06,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:21:06,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:06,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:06,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:06,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150552275] [2021-10-21 20:21:06,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:06,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414833616] [2021-10-21 20:21:06,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414833616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:06,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:06,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:21:06,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319469815] [2021-10-21 20:21:06,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:21:06,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:21:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:06,880 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:07,004 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-21 20:21:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:07,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-21 20:21:07,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:07,006 INFO L225 Difference]: With dead ends: 51 [2021-10-21 20:21:07,006 INFO L226 Difference]: Without dead ends: 51 [2021-10-21 20:21:07,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-21 20:21:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-10-21 20:21:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-21 20:21:07,012 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2021-10-21 20:21:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:07,012 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-21 20:21:07,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:07,012 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-10-21 20:21:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:21:07,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:07,013 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:07,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:07,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:07,214 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:07,215 INFO L82 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2021-10-21 20:21:07,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:07,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256388442] [2021-10-21 20:21:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:07,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:07,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:07,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094492278] [2021-10-21 20:21:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:07,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:07,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:07,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:07,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:21:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:07,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:21:07,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:07,424 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-10-21 20:21:07,425 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 1 case distinctions, treesize of input 24 treesize of output 25 [2021-10-21 20:21:07,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-10-21 20:21:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:07,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:07,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256388442] [2021-10-21 20:21:07,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:07,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094492278] [2021-10-21 20:21:07,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094492278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:07,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:21:07,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 20:21:07,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069404225] [2021-10-21 20:21:07,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:21:07,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:21:07,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:07,826 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:08,418 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-10-21 20:21:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:21:08,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-21 20:21:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:08,420 INFO L225 Difference]: With dead ends: 40 [2021-10-21 20:21:08,420 INFO L226 Difference]: Without dead ends: 40 [2021-10-21 20:21:08,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 344.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-21 20:21:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-21 20:21:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 33 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-21 20:21:08,425 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2021-10-21 20:21:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:08,425 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-21 20:21:08,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-10-21 20:21:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:21:08,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:08,427 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:08,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:08,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:08,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2021-10-21 20:21:08,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:08,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457520555] [2021-10-21 20:21:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:08,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:08,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:08,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692064625] [2021-10-21 20:21:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:08,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:08,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:08,664 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:08,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:21:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:08,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:21:08,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:09,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:09,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457520555] [2021-10-21 20:21:09,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:09,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692064625] [2021-10-21 20:21:09,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692064625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:09,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:09,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:21:09,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921422294] [2021-10-21 20:21:09,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:21:09,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:09,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:21:09,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:09,059 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:09,132 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-10-21 20:21:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:21:09,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-21 20:21:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:09,137 INFO L225 Difference]: With dead ends: 48 [2021-10-21 20:21:09,137 INFO L226 Difference]: Without dead ends: 48 [2021-10-21 20:21:09,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-21 20:21:09,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2021-10-21 20:21:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 39 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-10-21 20:21:09,143 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2021-10-21 20:21:09,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:09,143 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-10-21 20:21:09,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-10-21 20:21:09,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:21:09,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:09,144 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:09,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:09,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 20:21:09,345 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:09,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:09,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2021-10-21 20:21:09,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:09,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081407642] [2021-10-21 20:21:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:09,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:09,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:09,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114914843] [2021-10-21 20:21:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:09,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:09,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:09,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:09,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:21:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:09,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:21:09,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:09,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:09,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081407642] [2021-10-21 20:21:09,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:09,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114914843] [2021-10-21 20:21:09,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114914843] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:09,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:09,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:21:09,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489305237] [2021-10-21 20:21:09,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:21:09,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:21:09,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:21:09,710 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:10,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:10,002 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-10-21 20:21:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:21:10,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-21 20:21:10,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:10,005 INFO L225 Difference]: With dead ends: 45 [2021-10-21 20:21:10,005 INFO L226 Difference]: Without dead ends: 45 [2021-10-21 20:21:10,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:21:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-21 20:21:10,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-10-21 20:21:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-21 20:21:10,010 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2021-10-21 20:21:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:10,010 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-21 20:21:10,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-21 20:21:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:21:10,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:10,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:10,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-21 20:21:10,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:10,222 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:10,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:10,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2021-10-21 20:21:10,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:10,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026010836] [2021-10-21 20:21:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:10,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:10,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:10,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104006940] [2021-10-21 20:21:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:10,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:10,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:10,245 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:10,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:21:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:10,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:21:10,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:21:10,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:10,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026010836] [2021-10-21 20:21:10,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:10,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104006940] [2021-10-21 20:21:10,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104006940] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:10,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:10,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:21:10,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570281443] [2021-10-21 20:21:10,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:21:10,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:21:10,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:10,566 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:10,620 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-10-21 20:21:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-21 20:21:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:10,622 INFO L225 Difference]: With dead ends: 35 [2021-10-21 20:21:10,622 INFO L226 Difference]: Without dead ends: 33 [2021-10-21 20:21:10,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-21 20:21:10,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-21 20:21:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-21 20:21:10,637 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2021-10-21 20:21:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:10,640 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-21 20:21:10,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:10,640 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-21 20:21:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:21:10,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:10,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:10,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:10,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:10,855 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:10,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2021-10-21 20:21:10,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:10,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555414272] [2021-10-21 20:21:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:10,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:10,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:10,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973110775] [2021-10-21 20:21:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:10,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:10,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:10,867 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:10,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:21:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:11,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:21:11,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:11,073 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-21 20:21:11,074 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 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-21 20:21:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:21:11,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:11,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555414272] [2021-10-21 20:21:11,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:11,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973110775] [2021-10-21 20:21:11,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973110775] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:11,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:11,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:21:11,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124112027] [2021-10-21 20:21:11,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:21:11,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:21:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:11,121 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:11,131 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-10-21 20:21:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:21:11,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-21 20:21:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:11,134 INFO L225 Difference]: With dead ends: 32 [2021-10-21 20:21:11,134 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 20:21:11,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 20:21:11,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-21 20:21:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-10-21 20:21:11,148 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2021-10-21 20:21:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:11,148 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-10-21 20:21:11,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:11,149 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-10-21 20:21:11,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:21:11,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:11,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:11,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:11,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 20:21:11,370 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-21 20:21:11,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:11,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2021-10-21 20:21:11,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:11,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809216727] [2021-10-21 20:21:11,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:11,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:11,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:21:11,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458827824] [2021-10-21 20:21:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:11,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:11,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:11,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:11,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:21:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:11,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:21:11,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:11,644 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-10-21 20:21:11,650 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 1 case distinctions, treesize of input 15 treesize of output 21 [2021-10-21 20:21:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:21:11,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:11,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809216727] [2021-10-21 20:21:11,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:21:11,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458827824] [2021-10-21 20:21:11,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458827824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:11,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:11,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:21:11,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560636341] [2021-10-21 20:21:11,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:21:11,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:21:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:11,939 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:12,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:12,112 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-10-21 20:21:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:12,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-21 20:21:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:12,113 INFO L225 Difference]: With dead ends: 31 [2021-10-21 20:21:12,113 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:21:12,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 169.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:21:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:21:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:21:12,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-10-21 20:21:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:12,114 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:21:12,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:21:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:21:12,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:21:12,116 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:21:12,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:21:12,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-10-21 20:21:12,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-10-21 20:21:12,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-10-21 20:21:12,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-10-21 20:21:12,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:21:12,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:12,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 20:21:12,335 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:21:12,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:21:12 BoogieIcfgContainer [2021-10-21 20:21:12,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:21:12,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:21:12,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:21:12,338 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:21:12,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:03" (3/4) ... [2021-10-21 20:21:12,341 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:21:12,348 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-21 20:21:12,348 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-21 20:21:12,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-21 20:21:12,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-21 20:21:12,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-21 20:21:12,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-21 20:21:12,349 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-21 20:21:12,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-21 20:21:12,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 20:21:12,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-21 20:21:12,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:21:12,389 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:21:12,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:21:12,390 INFO L168 Benchmark]: Toolchain (without parser) took 9647.96 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 66.0 MB in the beginning and 53.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:12,391 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 71.8 MB in the beginning and 71.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:21:12,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.94 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 70.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:12,391 INFO L168 Benchmark]: Boogie Preprocessor took 50.56 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 68.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:12,392 INFO L168 Benchmark]: RCFGBuilder took 549.18 ms. Allocated memory is still 100.7 MB. Free memory was 68.5 MB in the beginning and 49.6 MB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:12,392 INFO L168 Benchmark]: TraceAbstraction took 8369.61 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 49.0 MB in the beginning and 55.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:12,393 INFO L168 Benchmark]: Witness Printer took 51.55 ms. Allocated memory is still 130.0 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:12,395 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory was 71.8 MB in the beginning and 71.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 616.94 ms. Allocated memory is still 100.7 MB. Free memory was 65.8 MB in the beginning and 70.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.56 ms. Allocated memory is still 100.7 MB. Free memory was 70.8 MB in the beginning and 68.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 549.18 ms. Allocated memory is still 100.7 MB. Free memory was 68.5 MB in the beginning and 49.6 MB in the end (delta: 18.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8369.61 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 49.0 MB in the beginning and 55.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * Witness Printer took 51.55 ms. Allocated memory is still 130.0 MB. Free memory was 55.4 MB in the beginning and 53.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 8296.8ms, OverallIterations: 10, TraceHistogramMax: 2, EmptinessCheckTime: 25.1ms, AutomataDifference: 1655.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 195 SDtfs, 274 SDslu, 241 SDs, 0 SdLazy, 300 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 935.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 805.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 65.2ms SsaConstructionTime, 173.1ms SatisfiabilityAnalysisTime, 2517.2ms InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 160 ConstructedInterpolants, 13 QuantifiedInterpolants, 1346 SizeOfPredicates, 26 NumberOfNonLiveVariables, 812 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 8/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 20:21:12,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_643be918-b80a-43a4-abb6-95d912eb872a/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...