./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8 --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 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:42:25,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:42:25,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:42:25,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:42:25,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:42:25,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:42:25,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:42:25,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:42:25,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:42:25,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:42:25,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:42:25,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:42:25,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:42:25,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:42:25,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:42:25,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:42:25,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:42:25,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:42:25,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:42:25,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:42:25,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:42:25,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:42:25,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:42:25,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:42:25,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:42:25,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:42:25,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:42:25,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:42:25,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:42:25,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:42:25,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:42:25,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:42:25,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:42:25,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:42:25,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:42:25,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:42:25,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:42:25,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:42:25,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:42:25,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:42:25,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:42:25,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:42:25,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:42:25,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:42:25,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:42:25,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:42:25,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:42:25,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:42:25,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:42:25,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:42:25,455 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:42:25,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:42:25,457 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:42:25,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:42:25,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:42:25,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:42:25,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:42:25,458 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:42:25,458 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:42:25,458 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:42:25,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:42:25,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:42:25,459 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:42:25,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:42:25,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:42:25,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:42:25,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:42:25,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:42:25,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:42:25,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:42:25,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:42:25,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:42:25,462 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_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2022-11-16 12:42:25,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:42:25,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:42:25,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:42:25,819 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:42:25,819 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:42:25,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-16 12:42:25,917 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data/622326f67/bfd91c37a9ca4c26bcec552f1a932073/FLAG556ba2ec0 [2022-11-16 12:42:26,519 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:42:26,520 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-16 12:42:26,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data/622326f67/bfd91c37a9ca4c26bcec552f1a932073/FLAG556ba2ec0 [2022-11-16 12:42:26,780 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data/622326f67/bfd91c37a9ca4c26bcec552f1a932073 [2022-11-16 12:42:26,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:42:26,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:42:26,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:42:26,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:42:26,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:42:26,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:26" (1/1) ... [2022-11-16 12:42:26,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e531a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:26, skipping insertion in model container [2022-11-16 12:42:26,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:26" (1/1) ... [2022-11-16 12:42:26,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:42:26,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:42:27,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:42:27,256 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:42:27,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:42:27,375 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:42:27,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27 WrapperNode [2022-11-16 12:42:27,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:42:27,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:42:27,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:42:27,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:42:27,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,465 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-11-16 12:42:27,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:42:27,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:42:27,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:42:27,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:42:27,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:42:27,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:42:27,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:42:27,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:42:27,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (1/1) ... [2022-11-16 12:42:27,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:42:27,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:27,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:42:27,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:42:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:42:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:42:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:42:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:42:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-16 12:42:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-16 12:42:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:42:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:42:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-16 12:42:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-16 12:42:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:42:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:42:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:42:27,807 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:42:27,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:42:28,440 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:42:28,456 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:42:28,458 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 12:42:28,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:28 BoogieIcfgContainer [2022-11-16 12:42:28,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:42:28,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:42:28,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:42:28,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:42:28,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:42:26" (1/3) ... [2022-11-16 12:42:28,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7425dc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:42:28, skipping insertion in model container [2022-11-16 12:42:28,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:27" (2/3) ... [2022-11-16 12:42:28,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7425dc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:42:28, skipping insertion in model container [2022-11-16 12:42:28,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:28" (3/3) ... [2022-11-16 12:42:28,478 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2022-11-16 12:42:28,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:42:28,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2022-11-16 12:42:28,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:42:28,589 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d35dbe0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:42:28,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2022-11-16 12:42:28,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:42:28,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:28,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:42:28,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2022-11-16 12:42:28,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:28,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687412536] [2022-11-16 12:42:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:28,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:28,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:28,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687412536] [2022-11-16 12:42:28,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687412536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:28,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:28,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:28,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116291174] [2022-11-16 12:42:28,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:28,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:42:28,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:42:28,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:42:28,828 INFO L87 Difference]: Start difference. First operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:28,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:28,892 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2022-11-16 12:42:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:42:28,894 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 12:42:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:28,909 INFO L225 Difference]: With dead ends: 233 [2022-11-16 12:42:28,910 INFO L226 Difference]: Without dead ends: 231 [2022-11-16 12:42:28,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:42:28,915 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:28,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:42:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-16 12:42:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-16 12:42:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 217 states have internal predecessors, (238), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 260 transitions. [2022-11-16 12:42:28,989 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 260 transitions. Word has length 4 [2022-11-16 12:42:28,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:28,989 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 260 transitions. [2022-11-16 12:42:28,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 260 transitions. [2022-11-16 12:42:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:42:28,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:28,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:42:28,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:42:28,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:28,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash 889932981, now seen corresponding path program 1 times [2022-11-16 12:42:28,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:28,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623433288] [2022-11-16 12:42:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:29,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:42:29,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801997299] [2022-11-16 12:42:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:29,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:29,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:42:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:42:29,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:29,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:42:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:29,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:29,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:29,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623433288] [2022-11-16 12:42:29,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:42:29,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801997299] [2022-11-16 12:42:29,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801997299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:29,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:29,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683318880] [2022-11-16 12:42:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:29,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:29,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:29,252 INFO L87 Difference]: Start difference. First operand 231 states and 260 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:29,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:29,426 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2022-11-16 12:42:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:29,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 12:42:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:29,428 INFO L225 Difference]: With dead ends: 230 [2022-11-16 12:42:29,428 INFO L226 Difference]: Without dead ends: 230 [2022-11-16 12:42:29,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:29,430 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 9 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:29,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 418 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:42:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-16 12:42:29,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-16 12:42:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 133 states have (on average 1.781954887218045) internal successors, (237), 216 states have internal predecessors, (237), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 259 transitions. [2022-11-16 12:42:29,444 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 259 transitions. Word has length 6 [2022-11-16 12:42:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:29,444 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 259 transitions. [2022-11-16 12:42:29,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 259 transitions. [2022-11-16 12:42:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:42:29,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:29,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:29,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:29,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:29,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1818119056, now seen corresponding path program 1 times [2022-11-16 12:42:29,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834752783] [2022-11-16 12:42:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:29,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:42:29,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521325517] [2022-11-16 12:42:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:29,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:29,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:29,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:42:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:42:29,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:29,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:42:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:29,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:29,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:29,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834752783] [2022-11-16 12:42:29,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:42:29,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521325517] [2022-11-16 12:42:29,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521325517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:29,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:29,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:29,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929825710] [2022-11-16 12:42:29,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:29,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:29,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:29,884 INFO L87 Difference]: Start difference. First operand 230 states and 259 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:30,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:30,103 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2022-11-16 12:42:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:42:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 12:42:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:30,105 INFO L225 Difference]: With dead ends: 239 [2022-11-16 12:42:30,105 INFO L226 Difference]: Without dead ends: 239 [2022-11-16 12:42:30,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:42:30,107 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 16 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:30,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 677 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:42:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-16 12:42:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-16 12:42:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 141 states have (on average 1.7446808510638299) internal successors, (246), 224 states have internal predecessors, (246), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2022-11-16 12:42:30,127 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 7 [2022-11-16 12:42:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:30,127 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2022-11-16 12:42:30,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2022-11-16 12:42:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:42:30,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:30,129 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:30,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:30,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:30,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:30,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash 253014343, now seen corresponding path program 1 times [2022-11-16 12:42:30,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:30,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893999121] [2022-11-16 12:42:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:30,382 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:42:30,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320542779] [2022-11-16 12:42:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:30,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:30,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:30,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:30,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:42:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:30,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:42:30,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:30,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:42:30,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:42:30,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2022-11-16 12:42:35,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-16 12:42:35,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:35,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893999121] [2022-11-16 12:42:35,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:42:35,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320542779] [2022-11-16 12:42:35,266 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 12:42:35,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:42:35,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:35,466 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 51 more [2022-11-16 12:42:35,470 INFO L158 Benchmark]: Toolchain (without parser) took 8685.28ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 75.5MB in the beginning and 131.2MB in the end (delta: -55.7MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. [2022-11-16 12:42:35,472 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory was 82.5MB in the beginning and 82.5MB in the end (delta: 29.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:42:35,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.99ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 75.1MB in the end (delta: 237.9kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:42:35,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.69ms. Allocated memory is still 111.1MB. Free memory was 75.1MB in the beginning and 72.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:35,473 INFO L158 Benchmark]: Boogie Preprocessor took 69.13ms. Allocated memory is still 111.1MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:35,473 INFO L158 Benchmark]: RCFGBuilder took 925.87ms. Allocated memory is still 111.1MB. Free memory was 69.9MB in the beginning and 82.1MB in the end (delta: -12.2MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2022-11-16 12:42:35,474 INFO L158 Benchmark]: TraceAbstraction took 7004.57ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 81.2MB in the beginning and 131.2MB in the end (delta: -50.0MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. [2022-11-16 12:42:35,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory was 82.5MB in the beginning and 82.5MB in the end (delta: 29.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 589.99ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 75.1MB in the end (delta: 237.9kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.69ms. Allocated memory is still 111.1MB. Free memory was 75.1MB in the beginning and 72.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.13ms. Allocated memory is still 111.1MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 925.87ms. Allocated memory is still 111.1MB. Free memory was 69.9MB in the beginning and 82.1MB in the end (delta: -12.2MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7004.57ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 81.2MB in the beginning and 131.2MB in the end (delta: -50.0MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8 --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 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:42:37,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:42:37,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:42:37,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:42:37,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:42:37,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:42:37,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:42:37,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:42:37,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:42:37,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:42:37,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:42:37,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:42:37,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:42:37,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:42:37,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:42:37,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:42:37,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:42:37,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:42:37,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:42:37,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:42:37,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:42:37,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:42:37,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:42:37,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:42:37,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:42:37,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:42:37,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:42:37,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:42:37,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:42:37,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:42:37,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:42:37,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:42:37,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:42:37,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:42:37,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:42:37,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:42:37,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:42:37,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:42:37,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:42:37,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:42:37,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:42:37,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:42:37,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:42:37,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:42:37,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:42:37,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:42:37,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:42:37,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:42:37,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:42:37,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:42:37,644 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:42:37,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:42:37,645 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:42:37,646 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:42:37,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:42:37,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:42:37,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:42:37,647 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:42:37,647 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:42:37,647 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:42:37,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:42:37,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:42:37,648 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:42:37,648 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:42:37,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:42:37,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:42:37,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:42:37,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:42:37,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:42:37,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:42:37,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:42:37,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:42:37,650 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:42:37,650 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:42:37,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:42:37,651 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2022-11-16 12:42:38,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:42:38,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:42:38,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:42:38,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:42:38,111 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:42:38,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-16 12:42:38,176 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data/cb8757260/fc4f94934c53447c85e4de5cd6a4c1c4/FLAG138b6a976 [2022-11-16 12:42:38,789 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:42:38,789 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-16 12:42:38,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data/cb8757260/fc4f94934c53447c85e4de5cd6a4c1c4/FLAG138b6a976 [2022-11-16 12:42:39,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/data/cb8757260/fc4f94934c53447c85e4de5cd6a4c1c4 [2022-11-16 12:42:39,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:42:39,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:42:39,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:42:39,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:42:39,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:42:39,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d251d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39, skipping insertion in model container [2022-11-16 12:42:39,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:42:39,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:42:39,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:42:39,478 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:42:39,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:42:39,569 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:42:39,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39 WrapperNode [2022-11-16 12:42:39,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:42:39,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:42:39,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:42:39,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:42:39,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,632 INFO L138 Inliner]: procedures = 189, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 230 [2022-11-16 12:42:39,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:42:39,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:42:39,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:42:39,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:42:39,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:42:39,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:42:39,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:42:39,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:42:39,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (1/1) ... [2022-11-16 12:42:39,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:42:39,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:39,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:42:39,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:42:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:42:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:42:39,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:42:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:42:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-16 12:42:39,777 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-16 12:42:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:42:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:42:39,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:42:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-16 12:42:39,778 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-16 12:42:39,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:42:39,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:42:39,956 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:42:39,958 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:42:40,980 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:42:40,995 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:42:41,005 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 12:42:41,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:41 BoogieIcfgContainer [2022-11-16 12:42:41,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:42:41,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:42:41,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:42:41,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:42:41,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:42:39" (1/3) ... [2022-11-16 12:42:41,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4740b639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:42:41, skipping insertion in model container [2022-11-16 12:42:41,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:39" (2/3) ... [2022-11-16 12:42:41,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4740b639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:42:41, skipping insertion in model container [2022-11-16 12:42:41,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:41" (3/3) ... [2022-11-16 12:42:41,015 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2022-11-16 12:42:41,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:42:41,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2022-11-16 12:42:41,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:42:41,150 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5973e971, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:42:41,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2022-11-16 12:42:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 129 states have (on average 1.9069767441860466) internal successors, (246), 214 states have internal predecessors, (246), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:42:41,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:41,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:42:41,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:41,170 INFO L85 PathProgramCache]: Analyzing trace with hash 929958, now seen corresponding path program 1 times [2022-11-16 12:42:41,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:41,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438337689] [2022-11-16 12:42:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:41,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:41,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:41,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:41,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:42:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:41,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:42:41,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:41,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:41,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438337689] [2022-11-16 12:42:41,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438337689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:41,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:41,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:41,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936112183] [2022-11-16 12:42:41,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:41,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:42:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:41,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:42:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:42:41,378 INFO L87 Difference]: Start difference. First operand has 228 states, 129 states have (on average 1.9069767441860466) internal successors, (246), 214 states have internal predecessors, (246), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:41,418 INFO L93 Difference]: Finished difference Result 228 states and 257 transitions. [2022-11-16 12:42:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:42:41,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 12:42:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:41,430 INFO L225 Difference]: With dead ends: 228 [2022-11-16 12:42:41,431 INFO L226 Difference]: Without dead ends: 226 [2022-11-16 12:42:41,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:42:41,436 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:41,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:42:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-16 12:42:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-16 12:42:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 128 states have (on average 1.8203125) internal successors, (233), 212 states have internal predecessors, (233), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2022-11-16 12:42:41,500 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 4 [2022-11-16 12:42:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:41,501 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2022-11-16 12:42:41,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2022-11-16 12:42:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:42:41,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:41,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:42:41,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:41,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:41,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 889928016, now seen corresponding path program 1 times [2022-11-16 12:42:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:41,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665859285] [2022-11-16 12:42:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:41,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:41,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:41,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:41,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:42:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:41,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:42:41,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:41,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:42:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:41,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:41,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:41,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665859285] [2022-11-16 12:42:41,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665859285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:41,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:41,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748169725] [2022-11-16 12:42:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:41,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:41,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:41,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:41,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:41,881 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:42,200 INFO L93 Difference]: Finished difference Result 225 states and 254 transitions. [2022-11-16 12:42:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:42,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 12:42:42,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:42,202 INFO L225 Difference]: With dead ends: 225 [2022-11-16 12:42:42,202 INFO L226 Difference]: Without dead ends: 225 [2022-11-16 12:42:42,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:42,203 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 9 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:42,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 408 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:42:42,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-16 12:42:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-16 12:42:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 128 states have (on average 1.8125) internal successors, (232), 211 states have internal predecessors, (232), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 254 transitions. [2022-11-16 12:42:42,220 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 254 transitions. Word has length 6 [2022-11-16 12:42:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:42,220 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 254 transitions. [2022-11-16 12:42:42,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 254 transitions. [2022-11-16 12:42:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:42:42,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:42,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:42,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:42,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:42,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:42,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1817965136, now seen corresponding path program 1 times [2022-11-16 12:42:42,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:42,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382186962] [2022-11-16 12:42:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:42,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:42,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:42,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:42,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:42:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:42,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:42:42,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:42,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:42:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:42,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:42,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:42,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382186962] [2022-11-16 12:42:42,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382186962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:42,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:42,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528439097] [2022-11-16 12:42:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:42,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:42,636 INFO L87 Difference]: Start difference. First operand 225 states and 254 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:43,096 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2022-11-16 12:42:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:42:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 12:42:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:43,098 INFO L225 Difference]: With dead ends: 234 [2022-11-16 12:42:43,098 INFO L226 Difference]: Without dead ends: 234 [2022-11-16 12:42:43,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:42:43,099 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 16 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:43,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 662 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:42:43,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-16 12:42:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-11-16 12:42:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 136 states have (on average 1.7720588235294117) internal successors, (241), 219 states have internal predecessors, (241), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 263 transitions. [2022-11-16 12:42:43,118 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 263 transitions. Word has length 7 [2022-11-16 12:42:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:43,119 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 263 transitions. [2022-11-16 12:42:43,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:43,119 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 263 transitions. [2022-11-16 12:42:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:42:43,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:43,121 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:43,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:43,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:43,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:43,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1126435929, now seen corresponding path program 1 times [2022-11-16 12:42:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:43,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385409252] [2022-11-16 12:42:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:43,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:43,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:43,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:43,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:42:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:43,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:42:43,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 12:42:43,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:43,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:43,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385409252] [2022-11-16 12:42:43,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385409252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:43,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:43,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:42:43,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062933470] [2022-11-16 12:42:43,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:43,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:42:43,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:42:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:42:43,730 INFO L87 Difference]: Start difference. First operand 234 states and 263 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:43,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:43,854 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2022-11-16 12:42:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:43,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2022-11-16 12:42:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:43,858 INFO L225 Difference]: With dead ends: 246 [2022-11-16 12:42:43,858 INFO L226 Difference]: Without dead ends: 236 [2022-11-16 12:42:43,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:42:43,861 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 14 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:43,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 950 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:42:43,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-16 12:42:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-16 12:42:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 221 states have internal predecessors, (243), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 265 transitions. [2022-11-16 12:42:43,873 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 265 transitions. Word has length 66 [2022-11-16 12:42:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:43,873 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 265 transitions. [2022-11-16 12:42:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:42:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 265 transitions. [2022-11-16 12:42:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 12:42:43,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:43,875 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:43,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:44,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:44,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:44,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:44,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1056190273, now seen corresponding path program 1 times [2022-11-16 12:42:44,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:44,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610701700] [2022-11-16 12:42:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:44,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:44,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:44,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:44,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:42:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:44,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:42:44,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 12:42:44,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-16 12:42:44,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:44,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610701700] [2022-11-16 12:42:44,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610701700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:44,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:42:44,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 12:42:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275151530] [2022-11-16 12:42:44,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:44,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:42:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:44,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:42:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:42:44,831 INFO L87 Difference]: Start difference. First operand 236 states and 265 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 12:42:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:45,230 INFO L93 Difference]: Finished difference Result 255 states and 285 transitions. [2022-11-16 12:42:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:42:45,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-11-16 12:42:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:45,232 INFO L225 Difference]: With dead ends: 255 [2022-11-16 12:42:45,233 INFO L226 Difference]: Without dead ends: 240 [2022-11-16 12:42:45,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:42:45,234 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 54 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:45,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1431 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:42:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-16 12:42:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-16 12:42:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 142 states have (on average 1.7394366197183098) internal successors, (247), 225 states have internal predecessors, (247), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 269 transitions. [2022-11-16 12:42:45,250 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 269 transitions. Word has length 71 [2022-11-16 12:42:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:45,251 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 269 transitions. [2022-11-16 12:42:45,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 12:42:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 269 transitions. [2022-11-16 12:42:45,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 12:42:45,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:45,256 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:45,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:45,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:45,480 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:45,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:45,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1608257113, now seen corresponding path program 2 times [2022-11-16 12:42:45,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:45,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675140930] [2022-11-16 12:42:45,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:42:45,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:45,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:45,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:45,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:42:45,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:42:45,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:45,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:42:45,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:45,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:42:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-11-16 12:42:46,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:46,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:46,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675140930] [2022-11-16 12:42:46,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675140930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:46,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:46,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:46,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19395421] [2022-11-16 12:42:46,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:46,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:46,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:46,040 INFO L87 Difference]: Start difference. First operand 240 states and 269 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:42:46,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:46,047 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2022-11-16 12:42:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:46,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 86 [2022-11-16 12:42:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:46,049 INFO L225 Difference]: With dead ends: 239 [2022-11-16 12:42:46,049 INFO L226 Difference]: Without dead ends: 239 [2022-11-16 12:42:46,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:46,051 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:46,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2022-11-16 12:42:46,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-16 12:42:46,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-16 12:42:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 142 states have (on average 1.732394366197183) internal successors, (246), 224 states have internal predecessors, (246), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2022-11-16 12:42:46,060 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 86 [2022-11-16 12:42:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:46,061 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2022-11-16 12:42:46,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:42:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2022-11-16 12:42:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 12:42:46,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:46,063 INFO L195 NwaCegarLoop]: trace histogram [22, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:46,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:46,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:46,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:46,275 INFO L85 PathProgramCache]: Analyzing trace with hash 597742058, now seen corresponding path program 1 times [2022-11-16 12:42:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532753730] [2022-11-16 12:42:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:46,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:46,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:46,277 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:46,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:42:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:46,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:42:46,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 155 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-16 12:42:46,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-16 12:42:47,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:47,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532753730] [2022-11-16 12:42:47,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532753730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:47,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:42:47,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:42:47,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291606102] [2022-11-16 12:42:47,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:47,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:42:47,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:47,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:42:47,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:42:47,369 INFO L87 Difference]: Start difference. First operand 239 states and 268 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 12:42:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:48,330 INFO L93 Difference]: Finished difference Result 271 states and 302 transitions. [2022-11-16 12:42:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:42:48,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2022-11-16 12:42:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:48,335 INFO L225 Difference]: With dead ends: 271 [2022-11-16 12:42:48,336 INFO L226 Difference]: Without dead ends: 246 [2022-11-16 12:42:48,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=504, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:42:48,337 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 109 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:48,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1964 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:42:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-16 12:42:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-11-16 12:42:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 149 states have (on average 1.6979865771812082) internal successors, (253), 231 states have internal predecessors, (253), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2022-11-16 12:42:48,347 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 95 [2022-11-16 12:42:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:48,347 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2022-11-16 12:42:48,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 12:42:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2022-11-16 12:42:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 12:42:48,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:48,359 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:48,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:48,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:48,581 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 891400244, now seen corresponding path program 2 times [2022-11-16 12:42:48,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:48,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327465367] [2022-11-16 12:42:48,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:42:48,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:48,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:48,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:48,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:42:49,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:42:49,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:49,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:42:49,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 305 proven. 15 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:42:49,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 305 proven. 15 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:42:50,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:50,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327465367] [2022-11-16 12:42:50,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327465367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:50,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:42:50,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 12:42:50,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045093039] [2022-11-16 12:42:50,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:50,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:42:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:42:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:42:50,557 INFO L87 Difference]: Start difference. First operand 246 states and 275 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:42:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:51,778 INFO L93 Difference]: Finished difference Result 263 states and 297 transitions. [2022-11-16 12:42:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:42:51,779 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 118 [2022-11-16 12:42:51,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:51,781 INFO L225 Difference]: With dead ends: 263 [2022-11-16 12:42:51,781 INFO L226 Difference]: Without dead ends: 253 [2022-11-16 12:42:51,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=345, Invalid=647, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:42:51,782 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 156 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:51,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1956 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:42:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-16 12:42:51,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2022-11-16 12:42:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 156 states have (on average 1.6666666666666667) internal successors, (260), 238 states have internal predecessors, (260), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 282 transitions. [2022-11-16 12:42:51,790 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 282 transitions. Word has length 118 [2022-11-16 12:42:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:51,791 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 282 transitions. [2022-11-16 12:42:51,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:42:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 282 transitions. [2022-11-16 12:42:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 12:42:51,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:51,793 INFO L195 NwaCegarLoop]: trace histogram [52, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:51,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:52,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:52,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash -407573974, now seen corresponding path program 3 times [2022-11-16 12:42:52,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:52,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69150509] [2022-11-16 12:42:52,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:42:52,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:52,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:52,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:52,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:42:52,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:42:52,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:52,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:42:52,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:52,526 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-16 12:42:52,657 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:42:52,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:42:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 124 not checked. [2022-11-16 12:42:52,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:53,191 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 12:42:53,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2022-11-16 12:42:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 853 proven. 124 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-11-16 12:42:53,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:53,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69150509] [2022-11-16 12:42:53,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69150509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:53,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:42:53,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2022-11-16 12:42:53,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785929328] [2022-11-16 12:42:53,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:53,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:42:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:53,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:42:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=91, Unknown=1, NotChecked=18, Total=132 [2022-11-16 12:42:53,248 INFO L87 Difference]: Start difference. First operand 253 states and 282 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:42:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:54,910 INFO L93 Difference]: Finished difference Result 388 states and 447 transitions. [2022-11-16 12:42:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:42:54,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 125 [2022-11-16 12:42:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:54,914 INFO L225 Difference]: With dead ends: 388 [2022-11-16 12:42:54,914 INFO L226 Difference]: Without dead ends: 388 [2022-11-16 12:42:54,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 235 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2022-11-16 12:42:54,915 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 206 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:54,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1608 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 861 Invalid, 0 Unknown, 536 Unchecked, 1.4s Time] [2022-11-16 12:42:54,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-16 12:42:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 251. [2022-11-16 12:42:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 156 states have (on average 1.6538461538461537) internal successors, (258), 236 states have internal predecessors, (258), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:42:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 280 transitions. [2022-11-16 12:42:54,927 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 280 transitions. Word has length 125 [2022-11-16 12:42:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:54,927 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 280 transitions. [2022-11-16 12:42:54,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:42:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 280 transitions. [2022-11-16 12:42:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 12:42:54,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:54,929 INFO L195 NwaCegarLoop]: trace histogram [52, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:54,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:55,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:55,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:42:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash -407573973, now seen corresponding path program 1 times [2022-11-16 12:42:55,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:42:55,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334547400] [2022-11-16 12:42:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:55,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:42:55,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:42:55,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:42:55,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:42:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:56,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:42:56,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 620 proven. 78 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:42:56,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 620 proven. 78 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:42:58,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:42:58,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334547400] [2022-11-16 12:42:58,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334547400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:58,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:42:58,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 12:42:58,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17794949] [2022-11-16 12:42:58,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:58,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:42:58,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:42:58,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:42:58,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:42:58,495 INFO L87 Difference]: Start difference. First operand 251 states and 280 transitions. Second operand has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:43:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:43:04,009 INFO L93 Difference]: Finished difference Result 299 states and 359 transitions. [2022-11-16 12:43:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 12:43:04,010 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 125 [2022-11-16 12:43:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:43:04,013 INFO L225 Difference]: With dead ends: 299 [2022-11-16 12:43:04,013 INFO L226 Difference]: Without dead ends: 289 [2022-11-16 12:43:04,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1195, Invalid=2345, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 12:43:04,014 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 504 mSDsluCounter, 3772 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:43:04,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 4029 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 12:43:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-16 12:43:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 269. [2022-11-16 12:43:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 174 states have (on average 1.603448275862069) internal successors, (279), 254 states have internal predecessors, (279), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:43:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 301 transitions. [2022-11-16 12:43:04,035 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 301 transitions. Word has length 125 [2022-11-16 12:43:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:43:04,036 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 301 transitions. [2022-11-16 12:43:04,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:43:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 301 transitions. [2022-11-16 12:43:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-16 12:43:04,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:43:04,038 INFO L195 NwaCegarLoop]: trace histogram [66, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:04,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:04,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:43:04,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:43:04,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash 401883883, now seen corresponding path program 2 times [2022-11-16 12:43:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:43:04,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872122661] [2022-11-16 12:43:04,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:43:04,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:43:04,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:43:04,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:43:04,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:43:05,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:43:05,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:43:05,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:43:05,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 1250 proven. 351 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:43:06,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 1250 proven. 351 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:43:10,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:43:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872122661] [2022-11-16 12:43:10,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872122661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:43:10,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:43:10,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 60 [2022-11-16 12:43:10,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843469719] [2022-11-16 12:43:10,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:43:10,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-16 12:43:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:43:10,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-16 12:43:10,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=2582, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 12:43:10,661 INFO L87 Difference]: Start difference. First operand 269 states and 301 transitions. Second operand has 60 states, 60 states have (on average 1.5) internal successors, (90), 60 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:43:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:43:31,069 INFO L93 Difference]: Finished difference Result 327 states and 401 transitions. [2022-11-16 12:43:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-16 12:43:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5) internal successors, (90), 60 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 139 [2022-11-16 12:43:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:43:31,073 INFO L225 Difference]: With dead ends: 327 [2022-11-16 12:43:31,074 INFO L226 Difference]: Without dead ends: 317 [2022-11-16 12:43:31,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=3526, Invalid=6980, Unknown=0, NotChecked=0, Total=10506 [2022-11-16 12:43:31,077 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1158 mSDsluCounter, 8380 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 8641 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:43:31,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 8641 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-16 12:43:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-16 12:43:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 297. [2022-11-16 12:43:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 202 states have (on average 1.5198019801980198) internal successors, (307), 282 states have internal predecessors, (307), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:43:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 329 transitions. [2022-11-16 12:43:31,094 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 329 transitions. Word has length 139 [2022-11-16 12:43:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:43:31,094 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 329 transitions. [2022-11-16 12:43:31,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5) internal successors, (90), 60 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:43:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 329 transitions. [2022-11-16 12:43:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-16 12:43:31,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:43:31,097 INFO L195 NwaCegarLoop]: trace histogram [94, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:31,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:31,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:43:31,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:43:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:31,310 INFO L85 PathProgramCache]: Analyzing trace with hash 490734699, now seen corresponding path program 3 times [2022-11-16 12:43:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:43:31,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124976377] [2022-11-16 12:43:31,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:43:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:43:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:43:31,312 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:43:31,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:43:31,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:43:31,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:43:31,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:43:31,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:31,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:43:32,127 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_2255 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_2255))))) is different from true [2022-11-16 12:43:32,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:43:32,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:43:32,692 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:43:32,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:43:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5070 backedges. 2365 proven. 0 refuted. 0 times theorem prover too weak. 2203 trivial. 502 not checked. [2022-11-16 12:43:32,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:35,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:43:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124976377] [2022-11-16 12:43:35,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124976377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1939332717] [2022-11-16 12:43:35,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:43:35,081 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:43:35,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:43:35,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:43:35,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-16 12:43:35,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:43:35,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:43:35,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:43:35,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:35,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:43:36,075 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2836 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_2836) |c_#length|)) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-16 12:43:36,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:43:36,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:43:36,547 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:43:36,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:43:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5070 backedges. 2365 proven. 0 refuted. 0 times theorem prover too weak. 2203 trivial. 502 not checked. [2022-11-16 12:43:36,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:38,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1939332717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:38,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:43:38,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2022-11-16 12:43:38,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664620434] [2022-11-16 12:43:38,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:43:38,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:43:38,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:43:38,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:43:38,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=131, Unknown=2, NotChecked=46, Total=210 [2022-11-16 12:43:38,749 INFO L87 Difference]: Start difference. First operand 297 states and 329 transitions. Second operand has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:43:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:43:42,282 INFO L93 Difference]: Finished difference Result 432 states and 494 transitions. [2022-11-16 12:43:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:43:42,284 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 167 [2022-11-16 12:43:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:43:42,287 INFO L225 Difference]: With dead ends: 432 [2022-11-16 12:43:42,287 INFO L226 Difference]: Without dead ends: 432 [2022-11-16 12:43:42,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=52, Invalid=295, Unknown=3, NotChecked=70, Total=420 [2022-11-16 12:43:42,288 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 319 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 740 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:43:42,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 392 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1772 Invalid, 0 Unknown, 740 Unchecked, 3.0s Time] [2022-11-16 12:43:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-16 12:43:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 295. [2022-11-16 12:43:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 202 states have (on average 1.50990099009901) internal successors, (305), 280 states have internal predecessors, (305), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:43:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2022-11-16 12:43:42,306 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 167 [2022-11-16 12:43:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:43:42,306 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2022-11-16 12:43:42,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:43:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2022-11-16 12:43:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-16 12:43:42,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:43:42,309 INFO L195 NwaCegarLoop]: trace histogram [94, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:42,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:42,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:42,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:43:42,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:43:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -850357557, now seen corresponding path program 1 times [2022-11-16 12:43:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:43:42,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327383883] [2022-11-16 12:43:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:43:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:43:42,726 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:43:42,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:43:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:44,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-16 12:43:44,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5070 backedges. 2510 proven. 1485 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:43:47,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5070 backedges. 2510 proven. 1485 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:43:59,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:43:59,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327383883] [2022-11-16 12:43:59,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327383883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:43:59,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:43:59,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 116 [2022-11-16 12:43:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478612831] [2022-11-16 12:43:59,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:43:59,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-11-16 12:43:59,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:43:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-11-16 12:43:59,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3478, Invalid=9862, Unknown=0, NotChecked=0, Total=13340 [2022-11-16 12:43:59,674 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand has 116 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 116 states have internal predecessors, (148), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:45:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:45:45,411 INFO L93 Difference]: Finished difference Result 381 states and 483 transitions. [2022-11-16 12:45:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-11-16 12:45:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 116 states have internal predecessors, (148), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 169 [2022-11-16 12:45:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:45:45,415 INFO L225 Difference]: With dead ends: 381 [2022-11-16 12:45:45,415 INFO L226 Difference]: Without dead ends: 371 [2022-11-16 12:45:45,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6550 ImplicationChecksByTransitivity, 95.4s TimeCoverageRelationStatistics Valid=11646, Invalid=23136, Unknown=0, NotChecked=0, Total=34782 [2022-11-16 12:45:45,425 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 2661 mSDsluCounter, 14626 mSDsCounter, 0 mSdLazyCounter, 5515 mSolverCounterSat, 1659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 14885 SdHoareTripleChecker+Invalid, 7174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1659 IncrementalHoareTripleChecker+Valid, 5515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:45:45,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 14885 Invalid, 7174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1659 Valid, 5515 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2022-11-16 12:45:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-16 12:45:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 351. [2022-11-16 12:45:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 258 states have (on average 1.3992248062015504) internal successors, (361), 336 states have internal predecessors, (361), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:45:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 383 transitions. [2022-11-16 12:45:45,436 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 383 transitions. Word has length 169 [2022-11-16 12:45:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:45:45,436 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 383 transitions. [2022-11-16 12:45:45,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 116 states have internal predecessors, (148), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:45:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 383 transitions. [2022-11-16 12:45:45,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-16 12:45:45,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:45:45,440 INFO L195 NwaCegarLoop]: trace histogram [150, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:45,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:45,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:45:45,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:45:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash -595094069, now seen corresponding path program 2 times [2022-11-16 12:45:45,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:45:45,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069415441] [2022-11-16 12:45:45,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:45:45,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:45:45,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:45:45,658 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:45:45,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:45:47,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:45:47,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:45:47,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-16 12:45:47,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 5030 proven. 6105 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:45:59,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:05,148 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 351 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 12:46:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 5030 proven. 6105 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 12:46:33,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:46:33,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069415441] [2022-11-16 12:46:33,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069415441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:46:33,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:46:33,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 228 [2022-11-16 12:46:33,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653736026] [2022-11-16 12:46:33,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:33,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 228 states [2022-11-16 12:46:33,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:46:33,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2022-11-16 12:46:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7969, Invalid=43787, Unknown=0, NotChecked=0, Total=51756 [2022-11-16 12:46:33,169 INFO L87 Difference]: Start difference. First operand 351 states and 383 transitions. Second operand has 228 states, 228 states have (on average 1.1403508771929824) internal successors, (260), 228 states have internal predecessors, (260), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:48:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:03,271 INFO L93 Difference]: Finished difference Result 390 states and 445 transitions. [2022-11-16 12:48:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-11-16 12:48:03,272 INFO L78 Accepts]: Start accepts. Automaton has has 228 states, 228 states have (on average 1.1403508771929824) internal successors, (260), 228 states have internal predecessors, (260), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 225 [2022-11-16 12:48:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:03,274 INFO L225 Difference]: With dead ends: 390 [2022-11-16 12:48:03,274 INFO L226 Difference]: Without dead ends: 380 [2022-11-16 12:48:03,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19225 ImplicationChecksByTransitivity, 46.6s TimeCoverageRelationStatistics Valid=10995, Invalid=52257, Unknown=0, NotChecked=0, Total=63252 [2022-11-16 12:48:03,281 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 2071 mSDsluCounter, 29759 mSDsCounter, 0 mSdLazyCounter, 16174 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 30018 SdHoareTripleChecker+Invalid, 17251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 16174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:03,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 30018 Invalid, 17251 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1077 Valid, 16174 Invalid, 0 Unknown, 0 Unchecked, 80.6s Time] [2022-11-16 12:48:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-16 12:48:03,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 360. [2022-11-16 12:48:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 267 states have (on average 1.3857677902621723) internal successors, (370), 345 states have internal predecessors, (370), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 12:48:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 392 transitions. [2022-11-16 12:48:03,291 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 392 transitions. Word has length 225 [2022-11-16 12:48:03,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:03,292 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 392 transitions. [2022-11-16 12:48:03,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 228 states, 228 states have (on average 1.1403508771929824) internal successors, (260), 228 states have internal predecessors, (260), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:48:03,293 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 392 transitions. [2022-11-16 12:48:03,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-16 12:48:03,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:03,296 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:03,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:03,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:48:03,511 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:48:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash -797817643, now seen corresponding path program 3 times [2022-11-16 12:48:03,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:48:03,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551863930] [2022-11-16 12:48:03,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:48:03,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:48:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:48:03,514 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:48:03,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 12:48:04,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:48:04,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:48:04,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:48:04,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:04,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:48:04,432 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5313 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5313) |c_#valid|)) is different from true [2022-11-16 12:48:04,466 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5313 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_5313) |c_#valid|)) is different from true [2022-11-16 12:48:04,472 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5313 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_5313))) is different from true [2022-11-16 12:48:04,477 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5313 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_5313))) is different from true [2022-11-16 12:48:04,507 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:48:04,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 12:48:04,605 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-16 12:48:04,992 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:48:04,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-16 12:48:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 0 refuted. 0 times theorem prover too weak. 7591 trivial. 2262 not checked. [2022-11-16 12:48:05,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 2262 refuted. 0 times theorem prover too weak. 7591 trivial. 0 not checked. [2022-11-16 12:48:07,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:48:07,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551863930] [2022-11-16 12:48:07,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551863930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:07,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:48:07,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2022-11-16 12:48:07,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810826335] [2022-11-16 12:48:07,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:07,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:48:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:48:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:48:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=330, Unknown=5, NotChecked=200, Total=600 [2022-11-16 12:48:07,689 INFO L87 Difference]: Start difference. First operand 360 states and 392 transitions. Second operand has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 12:48:09,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:09,731 INFO L93 Difference]: Finished difference Result 524 states and 565 transitions. [2022-11-16 12:48:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:48:09,732 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 234 [2022-11-16 12:48:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:09,734 INFO L225 Difference]: With dead ends: 524 [2022-11-16 12:48:09,734 INFO L226 Difference]: Without dead ends: 524 [2022-11-16 12:48:09,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 441 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=156, Invalid=671, Unknown=5, NotChecked=290, Total=1122 [2022-11-16 12:48:09,735 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 344 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1468 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:09,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 2135 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 781 Invalid, 0 Unknown, 1468 Unchecked, 1.4s Time] [2022-11-16 12:48:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-16 12:48:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 515. [2022-11-16 12:48:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 419 states have (on average 1.2577565632458234) internal successors, (527), 496 states have internal predecessors, (527), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:48:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 553 transitions. [2022-11-16 12:48:09,768 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 553 transitions. Word has length 234 [2022-11-16 12:48:09,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:09,769 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 553 transitions. [2022-11-16 12:48:09,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 19 states have internal predecessors, (70), 3 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 12:48:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 553 transitions. [2022-11-16 12:48:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-16 12:48:09,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:09,772 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:09,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:09,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:48:09,973 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:48:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash -797817642, now seen corresponding path program 1 times [2022-11-16 12:48:09,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:48:09,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542963367] [2022-11-16 12:48:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:09,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:48:09,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:48:09,976 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:48:09,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:48:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:13,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 12:48:13,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:13,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:48:13,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:48:14,098 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_6294 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_6294) |c_#length|)))) is different from true [2022-11-16 12:48:14,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:48:14,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:48:14,221 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:48:14,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:48:14,300 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|))) is different from true [2022-11-16 12:48:14,805 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:48:14,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:48:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 1 refuted. 0 times theorem prover too weak. 7590 trivial. 2262 not checked. [2022-11-16 12:48:14,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:15,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:48:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542963367] [2022-11-16 12:48:15,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542963367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [235391924] [2022-11-16 12:48:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:15,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:48:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:48:15,491 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:48:15,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-16 12:48:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:44,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 12:48:44,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:44,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:48:44,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:48:44,899 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_7271 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_7271))) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-16 12:48:45,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:48:45,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:48:45,042 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:48:45,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:48:45,586 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:48:45,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:48:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 1 refuted. 0 times theorem prover too weak. 7590 trivial. 2262 not checked. [2022-11-16 12:48:45,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:46,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [235391924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:46,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:48:46,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2022-11-16 12:48:46,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139601843] [2022-11-16 12:48:46,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:46,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:48:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:48:46,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:48:46,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=177, Unknown=3, NotChecked=84, Total=306 [2022-11-16 12:48:46,132 INFO L87 Difference]: Start difference. First operand 515 states and 553 transitions. Second operand has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:48:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:49,849 INFO L93 Difference]: Finished difference Result 616 states and 672 transitions. [2022-11-16 12:48:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:48:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 234 [2022-11-16 12:48:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:49,853 INFO L225 Difference]: With dead ends: 616 [2022-11-16 12:48:49,853 INFO L226 Difference]: Without dead ends: 616 [2022-11-16 12:48:49,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 457 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=61, Invalid=326, Unknown=5, NotChecked=114, Total=506 [2022-11-16 12:48:49,854 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 232 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1372 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:49,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 611 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1665 Invalid, 0 Unknown, 1372 Unchecked, 3.0s Time] [2022-11-16 12:48:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-11-16 12:48:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 515. [2022-11-16 12:48:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 419 states have (on average 1.2553699284009547) internal successors, (526), 496 states have internal predecessors, (526), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:48:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 552 transitions. [2022-11-16 12:48:49,867 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 552 transitions. Word has length 234 [2022-11-16 12:48:49,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:49,868 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 552 transitions. [2022-11-16 12:48:49,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:48:49,868 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 552 transitions. [2022-11-16 12:48:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-16 12:48:49,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:49,872 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:50,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:50,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:48:50,299 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:48:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash 563624472, now seen corresponding path program 1 times [2022-11-16 12:48:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:48:50,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972110380] [2022-11-16 12:48:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:50,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:48:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:48:50,301 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:48:50,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 12:48:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:52,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:48:52,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 264 proven. 1175 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-16 12:48:52,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:53,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-16 12:48:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 264 proven. 1175 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-16 12:48:53,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:48:53,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972110380] [2022-11-16 12:48:53,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972110380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:53,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:48:53,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:48:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148819273] [2022-11-16 12:48:53,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:48:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:48:53,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:48:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:48:53,557 INFO L87 Difference]: Start difference. First operand 515 states and 552 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:48:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:56,191 INFO L93 Difference]: Finished difference Result 533 states and 577 transitions. [2022-11-16 12:48:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:48:56,192 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 237 [2022-11-16 12:48:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:56,194 INFO L225 Difference]: With dead ends: 533 [2022-11-16 12:48:56,194 INFO L226 Difference]: Without dead ends: 533 [2022-11-16 12:48:56,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:48:56,195 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 220 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:56,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2736 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:48:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-16 12:48:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 514. [2022-11-16 12:48:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 419 states have (on average 1.2529832935560858) internal successors, (525), 495 states have internal predecessors, (525), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:48:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 551 transitions. [2022-11-16 12:48:56,206 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 551 transitions. Word has length 237 [2022-11-16 12:48:56,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:56,207 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 551 transitions. [2022-11-16 12:48:56,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:48:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 551 transitions. [2022-11-16 12:48:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-16 12:48:56,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:56,210 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:56,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:56,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:48:56,432 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:48:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1909474498, now seen corresponding path program 1 times [2022-11-16 12:48:56,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:48:56,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35113938] [2022-11-16 12:48:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:56,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:48:56,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:48:56,436 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:48:56,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:48:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:00,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:49:00,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:49:00,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:49:00,241 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_9237 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_9237) |c_#valid|)))) is different from true [2022-11-16 12:49:00,370 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:49:00,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:49:00,390 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9238 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_9238))) is different from true [2022-11-16 12:49:00,430 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9238 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_9238) |c_#valid|)) is different from true [2022-11-16 12:49:00,437 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9238 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_9238))) is different from true [2022-11-16 12:49:00,443 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9238 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_9238) |c_#valid|)) is different from true [2022-11-16 12:49:00,470 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:49:00,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 12:49:00,551 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-16 12:49:00,956 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:49:00,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-16 12:49:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 2711 proven. 0 refuted. 0 times theorem prover too weak. 7414 trivial. 3525 not checked. [2022-11-16 12:49:01,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:49:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 2713 proven. 3525 refuted. 0 times theorem prover too weak. 7412 trivial. 0 not checked. [2022-11-16 12:49:05,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:49:05,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35113938] [2022-11-16 12:49:05,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35113938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:49:05,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:49:05,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 26 [2022-11-16 12:49:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529984266] [2022-11-16 12:49:05,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:49:05,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:49:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:49:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:49:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=361, Unknown=7, NotChecked=258, Total=702 [2022-11-16 12:49:05,870 INFO L87 Difference]: Start difference. First operand 514 states and 551 transitions. Second operand has 27 states, 25 states have (on average 3.76) internal successors, (94), 21 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:49:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:49:24,206 INFO L93 Difference]: Finished difference Result 899 states and 959 transitions. [2022-11-16 12:49:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:49:24,207 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.76) internal successors, (94), 21 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 240 [2022-11-16 12:49:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:49:24,210 INFO L225 Difference]: With dead ends: 899 [2022-11-16 12:49:24,211 INFO L226 Difference]: Without dead ends: 899 [2022-11-16 12:49:24,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 451 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=180, Invalid=829, Unknown=7, NotChecked=390, Total=1406 [2022-11-16 12:49:24,212 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 633 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2289 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:49:24,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 2161 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 824 Invalid, 0 Unknown, 2289 Unchecked, 1.5s Time] [2022-11-16 12:49:24,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-11-16 12:49:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 838. [2022-11-16 12:49:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 734 states have (on average 1.167574931880109) internal successors, (857), 810 states have internal predecessors, (857), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:49:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 893 transitions. [2022-11-16 12:49:24,233 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 893 transitions. Word has length 240 [2022-11-16 12:49:24,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:49:24,234 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 893 transitions. [2022-11-16 12:49:24,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.76) internal successors, (94), 21 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:49:24,234 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 893 transitions. [2022-11-16 12:49:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-16 12:49:24,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:49:24,236 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:24,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:49:24,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:49:24,455 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:49:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1909474499, now seen corresponding path program 1 times [2022-11-16 12:49:24,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:49:24,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011967408] [2022-11-16 12:49:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:24,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:49:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:49:24,457 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:49:24,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:49:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:27,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-16 12:49:28,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:49:28,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:49:28,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:49:28,412 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_10234 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_10234) |c_#length|)))) is different from true [2022-11-16 12:49:28,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:49:28,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:49:28,599 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:49:28,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:49:28,984 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:49:28,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:49:29,137 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|))) is different from true [2022-11-16 12:49:29,612 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:49:29,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:49:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 2711 proven. 90 refuted. 0 times theorem prover too weak. 7412 trivial. 3437 not checked. [2022-11-16 12:49:29,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:49:31,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:49:31,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011967408] [2022-11-16 12:49:31,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011967408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:49:31,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1207504600] [2022-11-16 12:49:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:31,057 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:49:31,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:49:31,059 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:49:31,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-16 12:50:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:12,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 12:50:12,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:12,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:50:12,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:50:12,722 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_11225 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_11225))) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_11224 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_11224) |c_#valid|)))) is different from true [2022-11-16 12:50:12,920 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:50:12,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:50:12,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:50:12,980 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_11226 (_ BitVec 32)) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_11226) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)))) is different from true [2022-11-16 12:50:13,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:50:13,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:50:13,138 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:50:13,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:50:13,655 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:50:13,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:50:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 2711 proven. 2 refuted. 0 times theorem prover too weak. 7412 trivial. 3525 not checked. [2022-11-16 12:50:13,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:14,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1207504600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:14,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:50:14,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 24 [2022-11-16 12:50:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378723556] [2022-11-16 12:50:14,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:50:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:50:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:50:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=525, Unknown=8, NotChecked=196, Total=812 [2022-11-16 12:50:14,550 INFO L87 Difference]: Start difference. First operand 838 states and 893 transitions. Second operand has 25 states, 23 states have (on average 4.173913043478261) internal successors, (96), 20 states have internal predecessors, (96), 4 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-16 12:50:19,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:50:19,250 INFO L93 Difference]: Finished difference Result 989 states and 1071 transitions. [2022-11-16 12:50:19,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:50:19,250 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.173913043478261) internal successors, (96), 20 states have internal predecessors, (96), 4 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) Word has length 240 [2022-11-16 12:50:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:50:19,254 INFO L225 Difference]: With dead ends: 989 [2022-11-16 12:50:19,254 INFO L226 Difference]: Without dead ends: 989 [2022-11-16 12:50:19,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=133, Invalid=931, Unknown=8, NotChecked=260, Total=1332 [2022-11-16 12:50:19,255 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 344 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2180 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:50:19,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1091 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2109 Invalid, 0 Unknown, 2180 Unchecked, 3.6s Time] [2022-11-16 12:50:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2022-11-16 12:50:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 886. [2022-11-16 12:50:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 780 states have (on average 1.1692307692307693) internal successors, (912), 856 states have internal predecessors, (912), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:50:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 948 transitions. [2022-11-16 12:50:19,280 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 948 transitions. Word has length 240 [2022-11-16 12:50:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:50:19,281 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 948 transitions. [2022-11-16 12:50:19,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.173913043478261) internal successors, (96), 20 states have internal predecessors, (96), 4 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-16 12:50:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 948 transitions. [2022-11-16 12:50:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-16 12:50:19,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:50:19,283 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:19,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:19,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:50:19,699 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:50:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -935832673, now seen corresponding path program 1 times [2022-11-16 12:50:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:50:19,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640182638] [2022-11-16 12:50:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:19,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:50:19,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:50:19,702 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:50:19,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 12:50:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:23,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 12:50:23,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:23,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:50:23,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:50:23,550 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_12215 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_12215))) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-16 12:50:23,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:50:23,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:50:23,702 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:50:23,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:50:23,773 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|))) is different from true [2022-11-16 12:50:24,249 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:50:24,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:50:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 1 refuted. 0 times theorem prover too weak. 7590 trivial. 2262 not checked. [2022-11-16 12:50:24,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:25,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:50:25,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640182638] [2022-11-16 12:50:25,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640182638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:25,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1062310409] [2022-11-16 12:50:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:25,112 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:50:25,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:50:25,113 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:50:25,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-16 12:51:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:04,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 12:51:04,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:04,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:51:04,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:51:05,062 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:51:05,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:51:05,089 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:51:05,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:51:05,685 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:51:05,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:51:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 3797 proven. 89 refuted. 0 times theorem prover too weak. 7590 trivial. 2174 not checked. [2022-11-16 12:51:05,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:06,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1062310409] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:06,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:51:06,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 18 [2022-11-16 12:51:06,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041286716] [2022-11-16 12:51:06,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:06,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:51:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:51:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:51:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=297, Unknown=2, NotChecked=70, Total=420 [2022-11-16 12:51:06,420 INFO L87 Difference]: Start difference. First operand 886 states and 948 transitions. Second operand has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:51:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:51:09,391 INFO L93 Difference]: Finished difference Result 998 states and 1083 transitions. [2022-11-16 12:51:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:51:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 241 [2022-11-16 12:51:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:51:09,395 INFO L225 Difference]: With dead ends: 998 [2022-11-16 12:51:09,395 INFO L226 Difference]: Without dead ends: 998 [2022-11-16 12:51:09,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 482 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=67, Invalid=445, Unknown=2, NotChecked=86, Total=600 [2022-11-16 12:51:09,396 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 344 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1334 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:51:09,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 733 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1371 Invalid, 0 Unknown, 1334 Unchecked, 2.5s Time] [2022-11-16 12:51:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-11-16 12:51:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 894. [2022-11-16 12:51:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 788 states have (on average 1.1738578680203047) internal successors, (925), 864 states have internal predecessors, (925), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:51:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 961 transitions. [2022-11-16 12:51:09,415 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 961 transitions. Word has length 241 [2022-11-16 12:51:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:51:09,416 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 961 transitions. [2022-11-16 12:51:09,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:51:09,417 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 961 transitions. [2022-11-16 12:51:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-16 12:51:09,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:51:09,418 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:09,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:09,835 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (25)] Forcibly destroying the process [2022-11-16 12:51:09,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:09,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:51:09,853 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:51:09,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:09,853 INFO L85 PathProgramCache]: Analyzing trace with hash -935832674, now seen corresponding path program 1 times [2022-11-16 12:51:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:51:09,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186116715] [2022-11-16 12:51:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:09,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:51:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:51:09,856 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:51:09,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 12:51:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:12,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:51:12,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13650 trivial. 0 not checked. [2022-11-16 12:51:13,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:51:13,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:51:13,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186116715] [2022-11-16 12:51:13,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186116715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:13,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:13,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:51:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298043736] [2022-11-16 12:51:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:13,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:51:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:51:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:51:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:51:13,053 INFO L87 Difference]: Start difference. First operand 894 states and 961 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 12:51:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:51:13,421 INFO L93 Difference]: Finished difference Result 907 states and 976 transitions. [2022-11-16 12:51:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:51:13,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 241 [2022-11-16 12:51:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:51:13,424 INFO L225 Difference]: With dead ends: 907 [2022-11-16 12:51:13,425 INFO L226 Difference]: Without dead ends: 907 [2022-11-16 12:51:13,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:51:13,425 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 150 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:51:13,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 512 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:51:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-11-16 12:51:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 893. [2022-11-16 12:51:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 788 states have (on average 1.1687817258883249) internal successors, (921), 863 states have internal predecessors, (921), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:51:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 957 transitions. [2022-11-16 12:51:13,445 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 957 transitions. Word has length 241 [2022-11-16 12:51:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:51:13,445 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 957 transitions. [2022-11-16 12:51:13,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 12:51:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 957 transitions. [2022-11-16 12:51:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-16 12:51:13,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:51:13,447 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:13,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-16 12:51:13,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:51:13,667 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:51:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1687033728, now seen corresponding path program 1 times [2022-11-16 12:51:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:51:13,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33460883] [2022-11-16 12:51:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:13,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:51:13,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:51:13,670 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:51:13,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:51:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:16,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:51:16,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 176 proven. 1263 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-16 12:51:16,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:16,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-16 12:51:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 176 proven. 1263 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-16 12:51:17,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:51:17,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33460883] [2022-11-16 12:51:17,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33460883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:51:17,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:51:17,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:51:17,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347388783] [2022-11-16 12:51:17,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:17,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:51:17,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:51:17,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:51:17,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:51:17,448 INFO L87 Difference]: Start difference. First operand 893 states and 957 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:51:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:51:19,832 INFO L93 Difference]: Finished difference Result 906 states and 974 transitions. [2022-11-16 12:51:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:51:19,833 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 243 [2022-11-16 12:51:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:51:19,837 INFO L225 Difference]: With dead ends: 906 [2022-11-16 12:51:19,837 INFO L226 Difference]: Without dead ends: 906 [2022-11-16 12:51:19,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:51:19,838 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 436 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:51:19,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 2054 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:51:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-11-16 12:51:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 892. [2022-11-16 12:51:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 788 states have (on average 1.166243654822335) internal successors, (919), 862 states have internal predecessors, (919), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:51:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 955 transitions. [2022-11-16 12:51:19,856 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 955 transitions. Word has length 243 [2022-11-16 12:51:19,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:51:19,857 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 955 transitions. [2022-11-16 12:51:19,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:51:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 955 transitions. [2022-11-16 12:51:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-16 12:51:19,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:51:19,859 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:19,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:20,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:51:20,084 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:51:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1285517007, now seen corresponding path program 1 times [2022-11-16 12:51:20,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:51:20,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943937044] [2022-11-16 12:51:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:20,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:51:20,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:51:20,088 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:51:20,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 12:51:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:23,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-16 12:51:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:23,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:51:23,807 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_16178 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_16178) |c_#valid|)))) is different from true [2022-11-16 12:51:23,926 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:51:23,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:51:23,946 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16179 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_16179))) is different from true [2022-11-16 12:51:23,983 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16179 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_16179))) is different from true [2022-11-16 12:51:23,989 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16179 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_16179))) is different from true [2022-11-16 12:51:23,994 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16179 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_16179))) is different from true [2022-11-16 12:51:24,020 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:51:24,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 12:51:24,136 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16180 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_16180))) is different from true [2022-11-16 12:51:24,170 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16180 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_16180) |c_#valid|)) is different from true [2022-11-16 12:51:24,175 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16180 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_16180))) is different from true [2022-11-16 12:51:24,181 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_16180 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_16180) |c_#valid|)) is different from true [2022-11-16 12:51:24,207 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:51:24,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-16 12:51:24,313 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-16 12:51:24,684 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:51:24,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2022-11-16 12:51:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 1447 proven. 0 refuted. 0 times theorem prover too weak. 7327 trivial. 4876 not checked. [2022-11-16 12:51:24,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:25,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:51:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943937044] [2022-11-16 12:51:25,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943937044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780831837] [2022-11-16 12:51:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:25,233 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:51:25,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:51:25,234 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:51:25,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-16 12:51:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:47,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 12:51:47,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:47,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:51:47,372 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:51:47,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:51:47,894 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-16 12:51:47,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-16 12:51:48,048 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17182 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_17182) |c_#valid|)) is different from true [2022-11-16 12:51:48,089 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17182 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_17182))) is different from true [2022-11-16 12:51:48,095 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17182 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_17182) |c_#valid|)) is different from true [2022-11-16 12:51:48,101 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_17182 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_17182) |c_#valid|)) is different from true [2022-11-16 12:51:48,155 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-16 12:51:48,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 40 [2022-11-16 12:51:48,812 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-16 12:51:48,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 64 [2022-11-16 12:51:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 1535 proven. 176 refuted. 0 times theorem prover too weak. 7327 trivial. 4612 not checked. [2022-11-16 12:51:49,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:49,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [780831837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:49,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:51:49,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 44 [2022-11-16 12:51:49,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929354665] [2022-11-16 12:51:49,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 12:51:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:51:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 12:51:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1091, Unknown=14, NotChecked=1134, Total=2450 [2022-11-16 12:51:49,575 INFO L87 Difference]: Start difference. First operand 892 states and 955 transitions. Second operand has 45 states, 42 states have (on average 3.0476190476190474) internal successors, (128), 37 states have internal predecessors, (128), 6 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-16 12:51:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:51:52,555 INFO L93 Difference]: Finished difference Result 1098 states and 1216 transitions. [2022-11-16 12:51:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:51:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 3.0476190476190474) internal successors, (128), 37 states have internal predecessors, (128), 6 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) Word has length 246 [2022-11-16 12:51:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:51:52,561 INFO L225 Difference]: With dead ends: 1098 [2022-11-16 12:51:52,562 INFO L226 Difference]: Without dead ends: 1098 [2022-11-16 12:51:52,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 473 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=322, Invalid=1612, Unknown=14, NotChecked=1358, Total=3306 [2022-11-16 12:51:52,563 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 467 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 5801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4572 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:51:52,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2671 Invalid, 5801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1186 Invalid, 0 Unknown, 4572 Unchecked, 2.1s Time] [2022-11-16 12:51:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-16 12:51:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 964. [2022-11-16 12:51:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 849 states have (on average 1.1755005889281507) internal successors, (998), 923 states have internal predecessors, (998), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 12:51:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1056 transitions. [2022-11-16 12:51:52,609 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1056 transitions. Word has length 246 [2022-11-16 12:51:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:51:52,610 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1056 transitions. [2022-11-16 12:51:52,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 3.0476190476190474) internal successors, (128), 37 states have internal predecessors, (128), 6 states have call successors, (9), 2 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-16 12:51:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1056 transitions. [2022-11-16 12:51:52,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-16 12:51:52,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:51:52,613 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:52,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:52,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:53,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:51:53,040 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:51:53,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1285517008, now seen corresponding path program 1 times [2022-11-16 12:51:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:51:53,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581790921] [2022-11-16 12:51:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:53,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:51:53,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:51:53,042 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:51:53,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 12:51:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:57,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-16 12:51:57,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:57,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:51:57,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:51:58,164 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_18183 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_18183))) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-16 12:51:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:51:58,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:51:58,298 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:51:58,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:51:58,713 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:51:58,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:51:58,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:51:59,372 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:51:59,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:51:59,664 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|)) (= (_ bv0 1) (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)))) is different from true [2022-11-16 12:52:00,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:00,740 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:52:00,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:52:00,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:52:00,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:52:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 1449 proven. 266 refuted. 0 times theorem prover too weak. 7323 trivial. 4612 not checked. [2022-11-16 12:52:01,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:52:04,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:52:04,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581790921] [2022-11-16 12:52:04,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581790921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:52:04,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [195887106] [2022-11-16 12:52:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:04,726 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:52:04,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:52:04,727 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:52:04,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-16 12:52:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:58,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 12:52:58,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:58,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:52:58,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:52:59,220 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:52:59,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:52:59,261 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:52:59,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:53:00,441 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:53:00,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:53:00,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:53:00,777 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:53:00,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:53:01,101 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|))) is different from true [2022-11-16 12:53:01,662 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:53:01,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:53:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 1447 proven. 532 refuted. 0 times theorem prover too weak. 7323 trivial. 4348 not checked. [2022-11-16 12:53:02,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:03,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [195887106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:03,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:53:03,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32] total 45 [2022-11-16 12:53:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332490850] [2022-11-16 12:53:03,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:53:03,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 12:53:03,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:03,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 12:53:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2088, Unknown=8, NotChecked=282, Total=2550 [2022-11-16 12:53:03,707 INFO L87 Difference]: Start difference. First operand 964 states and 1056 transitions. Second operand has 46 states, 40 states have (on average 3.2) internal successors, (128), 37 states have internal predecessors, (128), 7 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-16 12:53:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:16,401 INFO L93 Difference]: Finished difference Result 1137 states and 1260 transitions. [2022-11-16 12:53:16,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:53:16,402 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 40 states have (on average 3.2) internal successors, (128), 37 states have internal predecessors, (128), 7 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) Word has length 246 [2022-11-16 12:53:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:16,404 INFO L225 Difference]: With dead ends: 1137 [2022-11-16 12:53:16,404 INFO L226 Difference]: Without dead ends: 1137 [2022-11-16 12:53:16,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=433, Invalid=3852, Unknown=17, NotChecked=390, Total=4692 [2022-11-16 12:53:16,405 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 304 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 4276 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 7646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3345 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:16,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1856 Invalid, 7646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 4276 Invalid, 0 Unknown, 3345 Unchecked, 8.3s Time] [2022-11-16 12:53:16,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-11-16 12:53:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1032. [2022-11-16 12:53:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 914 states have (on average 1.1772428884026258) internal successors, (1076), 988 states have internal predecessors, (1076), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 12:53:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1134 transitions. [2022-11-16 12:53:16,427 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1134 transitions. Word has length 246 [2022-11-16 12:53:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:16,427 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1134 transitions. [2022-11-16 12:53:16,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 40 states have (on average 3.2) internal successors, (128), 37 states have internal predecessors, (128), 7 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-16 12:53:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1134 transitions. [2022-11-16 12:53:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-16 12:53:16,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:16,429 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:16,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:16,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:16,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:53:16,843 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:53:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:16,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1196321606, now seen corresponding path program 1 times [2022-11-16 12:53:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:16,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914699738] [2022-11-16 12:53:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:16,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:16,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:16,846 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:16,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-16 12:53:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:19,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:53:19,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13650 trivial. 0 not checked. [2022-11-16 12:53:19,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:19,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914699738] [2022-11-16 12:53:19,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914699738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:19,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:19,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:53:19,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024446477] [2022-11-16 12:53:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:19,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:53:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:53:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:53:19,920 INFO L87 Difference]: Start difference. First operand 1032 states and 1134 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 12:53:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:20,297 INFO L93 Difference]: Finished difference Result 1039 states and 1143 transitions. [2022-11-16 12:53:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:53:20,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 247 [2022-11-16 12:53:20,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:20,301 INFO L225 Difference]: With dead ends: 1039 [2022-11-16 12:53:20,301 INFO L226 Difference]: Without dead ends: 1039 [2022-11-16 12:53:20,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:53:20,302 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 125 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:20,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 508 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:53:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2022-11-16 12:53:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1023. [2022-11-16 12:53:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 907 states have (on average 1.173098125689085) internal successors, (1064), 979 states have internal predecessors, (1064), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 12:53:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1122 transitions. [2022-11-16 12:53:20,323 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1122 transitions. Word has length 247 [2022-11-16 12:53:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:20,323 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1122 transitions. [2022-11-16 12:53:20,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 12:53:20,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1122 transitions. [2022-11-16 12:53:20,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-16 12:53:20,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:20,326 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:20,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-16 12:53:20,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:20,551 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:53:20,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:20,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1196321607, now seen corresponding path program 1 times [2022-11-16 12:53:20,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:20,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063592309] [2022-11-16 12:53:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:20,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:20,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:20,555 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:20,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-16 12:53:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:23,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2172 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:53:23,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 176 proven. 1263 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-16 12:53:24,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:24,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:53:24,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-11-16 12:53:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 176 proven. 1263 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-16 12:53:25,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:25,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063592309] [2022-11-16 12:53:25,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063592309] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:53:25,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:53:25,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:53:25,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027717831] [2022-11-16 12:53:25,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:53:25,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:53:25,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:25,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:53:25,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:53:25,433 INFO L87 Difference]: Start difference. First operand 1023 states and 1122 transitions. Second operand has 18 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:53:28,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:28,658 INFO L93 Difference]: Finished difference Result 1031 states and 1133 transitions. [2022-11-16 12:53:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:53:28,659 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 247 [2022-11-16 12:53:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:28,661 INFO L225 Difference]: With dead ends: 1031 [2022-11-16 12:53:28,662 INFO L226 Difference]: Without dead ends: 1031 [2022-11-16 12:53:28,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:53:28,662 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 395 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:28,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 2450 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 12:53:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-16 12:53:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1022. [2022-11-16 12:53:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 907 states have (on average 1.1719955898566703) internal successors, (1063), 978 states have internal predecessors, (1063), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 12:53:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1121 transitions. [2022-11-16 12:53:28,681 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1121 transitions. Word has length 247 [2022-11-16 12:53:28,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:28,682 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 1121 transitions. [2022-11-16 12:53:28,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.470588235294118) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:53:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1121 transitions. [2022-11-16 12:53:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-16 12:53:28,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:28,685 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:28,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:28,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:28,899 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:53:28,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:28,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1386170169, now seen corresponding path program 1 times [2022-11-16 12:53:28,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:28,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450340860] [2022-11-16 12:53:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:28,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:28,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:28,901 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:28,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 12:53:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:32,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:53:32,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13650 trivial. 0 not checked. [2022-11-16 12:53:32,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:53:32,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:32,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450340860] [2022-11-16 12:53:32,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450340860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:53:32,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:53:32,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:53:32,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370743492] [2022-11-16 12:53:32,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:53:32,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:53:32,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:53:32,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:32,168 INFO L87 Difference]: Start difference. First operand 1022 states and 1121 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 12:53:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:32,454 INFO L93 Difference]: Finished difference Result 1025 states and 1126 transitions. [2022-11-16 12:53:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:53:32,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 249 [2022-11-16 12:53:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:32,456 INFO L225 Difference]: With dead ends: 1025 [2022-11-16 12:53:32,456 INFO L226 Difference]: Without dead ends: 1025 [2022-11-16 12:53:32,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:53:32,457 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 36 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:32,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 373 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:53:32,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-11-16 12:53:32,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1021. [2022-11-16 12:53:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 907 states have (on average 1.1708930540242557) internal successors, (1062), 977 states have internal predecessors, (1062), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 12:53:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1120 transitions. [2022-11-16 12:53:32,476 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1120 transitions. Word has length 249 [2022-11-16 12:53:32,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:32,477 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1120 transitions. [2022-11-16 12:53:32,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-16 12:53:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1120 transitions. [2022-11-16 12:53:32,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-16 12:53:32,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:32,479 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:32,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:32,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:32,703 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:53:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1386170168, now seen corresponding path program 1 times [2022-11-16 12:53:32,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:32,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560815510] [2022-11-16 12:53:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:32,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:32,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:32,708 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:32,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-16 12:53:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:35,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:53:35,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 88 proven. 1351 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-16 12:53:36,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:36,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-16 12:53:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 88 proven. 1351 refuted. 0 times theorem prover too weak. 12211 trivial. 0 not checked. [2022-11-16 12:53:36,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560815510] [2022-11-16 12:53:36,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560815510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:53:36,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:53:36,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:53:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124168306] [2022-11-16 12:53:36,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:53:36,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:53:36,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:53:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:53:37,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:53:37,000 INFO L87 Difference]: Start difference. First operand 1021 states and 1120 transitions. Second operand has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:53:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:53:39,108 INFO L93 Difference]: Finished difference Result 1029 states and 1131 transitions. [2022-11-16 12:53:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:53:39,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 249 [2022-11-16 12:53:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:53:39,112 INFO L225 Difference]: With dead ends: 1029 [2022-11-16 12:53:39,113 INFO L226 Difference]: Without dead ends: 1029 [2022-11-16 12:53:39,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:53:39,114 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 261 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:53:39,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 2473 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:53:39,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-16 12:53:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1020. [2022-11-16 12:53:39,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 907 states have (on average 1.1697905181918413) internal successors, (1061), 976 states have internal predecessors, (1061), 29 states have call successors, (29), 14 states have call predecessors, (29), 14 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-16 12:53:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1119 transitions. [2022-11-16 12:53:39,133 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1119 transitions. Word has length 249 [2022-11-16 12:53:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:53:39,134 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1119 transitions. [2022-11-16 12:53:39,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 16 states have internal predecessors, (82), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 12:53:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1119 transitions. [2022-11-16 12:53:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-16 12:53:39,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:53:39,136 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:53:39,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:53:39,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:39,360 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:53:39,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:53:39,361 INFO L85 PathProgramCache]: Analyzing trace with hash 715107068, now seen corresponding path program 1 times [2022-11-16 12:53:39,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:53:39,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909458765] [2022-11-16 12:53:39,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:39,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:53:39,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:53:39,364 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:53:39,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-16 12:53:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:53:43,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 12:53:43,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:53:43,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:53:43,784 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_24198 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_24198))) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)))) is different from true [2022-11-16 12:53:43,912 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:53:43,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:53:43,932 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24199 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_24199))) is different from true [2022-11-16 12:53:43,970 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24199 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_24199))) is different from true [2022-11-16 12:53:43,978 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24199 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_24199) |c_#valid|)) is different from true [2022-11-16 12:53:43,984 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24199 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_24199) |c_#valid|)) is different from true [2022-11-16 12:53:44,012 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:53:44,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 12:53:44,170 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24200 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_24200) |c_#valid|)) is different from true [2022-11-16 12:53:44,211 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24200 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_24200))) is different from true [2022-11-16 12:53:44,218 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24200 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_24200) |c_#valid|)) is different from true [2022-11-16 12:53:44,225 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24200 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_24200))) is different from true [2022-11-16 12:53:44,259 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:53:44,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-16 12:53:44,458 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24201 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_24201))) is different from true [2022-11-16 12:53:44,504 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24201 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_24201))) is different from true [2022-11-16 12:53:44,511 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24201 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_24201) |c_#valid|)) is different from true [2022-11-16 12:53:44,518 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_24201 (_ BitVec 1))) (= (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_24201) |c_#valid|)) is different from true [2022-11-16 12:53:44,556 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:53:44,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2022-11-16 12:53:44,748 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-16 12:53:45,171 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:53:45,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 34 [2022-11-16 12:53:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7330 trivial. 6315 not checked. [2022-11-16 12:53:45,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:53:46,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:53:46,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909458765] [2022-11-16 12:53:46,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909458765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:53:46,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1077711705] [2022-11-16 12:53:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:53:46,245 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:53:46,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:53:46,246 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:53:46,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-16 12:54:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:54:19,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 12:54:19,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:54:19,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:54:20,351 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:54:20,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:54:20,675 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-16 12:54:20,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-16 12:54:21,250 INFO L321 Elim1Store]: treesize reduction 66, result has 34.0 percent of original size [2022-11-16 12:54:21,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59 [2022-11-16 12:54:22,325 INFO L321 Elim1Store]: treesize reduction 88, result has 33.8 percent of original size [2022-11-16 12:54:22,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 75 [2022-11-16 12:54:23,122 INFO L321 Elim1Store]: treesize reduction 64, result has 31.2 percent of original size [2022-11-16 12:54:23,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 56 [2022-11-16 12:54:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 269 proven. 352 refuted. 0 times theorem prover too weak. 7594 trivial. 5435 not checked. [2022-11-16 12:54:24,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:55:19,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1077711705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:55:19,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:55:19,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28] total 52 [2022-11-16 12:55:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874258486] [2022-11-16 12:55:19,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:55:19,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-16 12:55:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:55:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-16 12:55:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=1618, Unknown=40, NotChecked=1386, Total=3422 [2022-11-16 12:55:19,526 INFO L87 Difference]: Start difference. First operand 1020 states and 1119 transitions. Second operand has 53 states, 47 states have (on average 2.8297872340425534) internal successors, (133), 43 states have internal predecessors, (133), 8 states have call successors, (10), 2 states have call predecessors, (10), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-16 12:55:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:55:23,926 INFO L93 Difference]: Finished difference Result 1377 states and 1583 transitions. [2022-11-16 12:55:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:55:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 47 states have (on average 2.8297872340425534) internal successors, (133), 43 states have internal predecessors, (133), 8 states have call successors, (10), 2 states have call predecessors, (10), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) Word has length 252 [2022-11-16 12:55:23,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:55:23,935 INFO L225 Difference]: With dead ends: 1377 [2022-11-16 12:55:23,936 INFO L226 Difference]: Without dead ends: 1377 [2022-11-16 12:55:23,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 634 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 58.6s TimeCoverageRelationStatistics Valid=441, Invalid=1926, Unknown=41, NotChecked=1498, Total=3906 [2022-11-16 12:55:23,945 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 490 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 6098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5028 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:55:23,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 3110 Invalid, 6098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1028 Invalid, 0 Unknown, 5028 Unchecked, 1.9s Time] [2022-11-16 12:55:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2022-11-16 12:55:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1171. [2022-11-16 12:55:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1035 states have (on average 1.183574879227053) internal successors, (1225), 1104 states have internal predecessors, (1225), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-16 12:55:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1329 transitions. [2022-11-16 12:55:23,977 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1329 transitions. Word has length 252 [2022-11-16 12:55:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:55:23,978 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1329 transitions. [2022-11-16 12:55:23,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 47 states have (on average 2.8297872340425534) internal successors, (133), 43 states have internal predecessors, (133), 8 states have call successors, (10), 2 states have call predecessors, (10), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-16 12:55:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1329 transitions. [2022-11-16 12:55:23,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-16 12:55:23,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:55:23,980 INFO L195 NwaCegarLoop]: trace histogram [159, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:55:24,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:55:24,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-16 12:55:24,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:24,395 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 12:55:24,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:55:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash 715107069, now seen corresponding path program 1 times [2022-11-16 12:55:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:55:24,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592640474] [2022-11-16 12:55:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:55:24,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:55:24,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:55:24,399 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:55:24,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-16 12:55:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:55:29,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-16 12:55:29,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:55:29,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:55:29,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:55:30,134 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_26233 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_26233) |c_#length|)))) is different from true [2022-11-16 12:55:30,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:30,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:55:30,314 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:55:30,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:55:30,771 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:30,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:55:31,466 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:55:31,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-16 12:55:31,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:55:32,485 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-16 12:55:32,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 38 [2022-11-16 12:55:32,943 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| |c_zalloc_or_die_#in~size#1|)) (= (_ bv0 1) (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)))) is different from true [2022-11-16 12:55:34,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:34,152 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:55:34,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 30 [2022-11-16 12:55:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:55:34,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:55:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 96 proven. 443 refuted. 0 times theorem prover too weak. 7324 trivial. 5787 not checked. [2022-11-16 12:55:35,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:55:38,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:55:38,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592640474] [2022-11-16 12:55:38,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592640474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:55:38,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1183380341] [2022-11-16 12:55:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:55:38,835 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:55:38,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:55:38,835 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:55:38,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d35fd83-41ee-4907-86d8-0177fdb957f0/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process