./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8 --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-2329fc7 [2022-12-13 15:19:27,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:19:27,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:19:27,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:19:27,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:19:27,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:19:27,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:19:27,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:19:27,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:19:27,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:19:27,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:19:27,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:19:27,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:19:27,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:19:27,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:19:27,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:19:27,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:19:27,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:19:27,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:19:27,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:19:27,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:19:27,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:19:27,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:19:27,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:19:27,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:19:27,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:19:27,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:19:27,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:19:27,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:19:27,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:19:27,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:19:27,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:19:27,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:19:27,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:19:27,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:19:27,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:19:27,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:19:27,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:19:27,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:19:27,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:19:27,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:19:27,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 15:19:27,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:19:27,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:19:27,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:19:27,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:19:27,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:19:27,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:19:27,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:19:27,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:19:27,128 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:19:27,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:19:27,129 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:19:27,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:19:27,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:19:27,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:19:27,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:19:27,129 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 15:19:27,130 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 15:19:27,130 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 15:19:27,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:19:27,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:19:27,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:19:27,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:19:27,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:19:27,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:19:27,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:19:27,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:19:27,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:19:27,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:19:27,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:19:27,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:19:27,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:19:27,132 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:19:27,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:19:27,132 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:19:27,132 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2022-12-13 15:19:27,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:19:27,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:19:27,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:19:27,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:19:27,345 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:19:27,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/memsafety/test-0235-1.i [2022-12-13 15:19:30,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:19:30,209 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:19:30,210 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/sv-benchmarks/c/memsafety/test-0235-1.i [2022-12-13 15:19:30,220 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/data/5a91661eb/5acb0d1c1fcd48ef80454843a2a19cd7/FLAG192eb013c [2022-12-13 15:19:30,230 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/data/5a91661eb/5acb0d1c1fcd48ef80454843a2a19cd7 [2022-12-13 15:19:30,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:19:30,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:19:30,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:19:30,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:19:30,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:19:30,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70919a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30, skipping insertion in model container [2022-12-13 15:19:30,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:19:30,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:19:30,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:19:30,501 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:19:30,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:19:30,553 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:19:30,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30 WrapperNode [2022-12-13 15:19:30,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:19:30,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:19:30,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:19:30,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:19:30,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,588 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-12-13 15:19:30,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:19:30,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:19:30,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:19:30,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:19:30,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,616 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:19:30,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:19:30,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:19:30,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:19:30,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (1/1) ... [2022-12-13 15:19:30,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:19:30,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:30,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:19:30,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:19:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:19:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:19:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 15:19:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 15:19:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-12-13 15:19:30,678 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-12-13 15:19:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:19:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 15:19:30,678 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-12-13 15:19:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-12-13 15:19:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:19:30,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:19:30,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:19:30,771 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:19:30,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:19:31,211 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:19:31,219 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:19:31,219 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 15:19:31,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:19:31 BoogieIcfgContainer [2022-12-13 15:19:31,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:19:31,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:19:31,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:19:31,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:19:31,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:19:30" (1/3) ... [2022-12-13 15:19:31,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40edf3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:19:31, skipping insertion in model container [2022-12-13 15:19:31,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:30" (2/3) ... [2022-12-13 15:19:31,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40edf3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:19:31, skipping insertion in model container [2022-12-13 15:19:31,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:19:31" (3/3) ... [2022-12-13 15:19:31,231 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2022-12-13 15:19:31,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:19:31,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2022-12-13 15:19:31,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:19:31,304 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=PETRI_NET, 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;@661cf950, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:19:31,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2022-12-13 15:19:31,309 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) [2022-12-13 15:19:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 15:19:31,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:31,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 15:19:31,316 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)] === [2022-12-13 15:19:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2022-12-13 15:19:31,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:31,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769906592] [2022-12-13 15:19:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:31,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:31,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769906592] [2022-12-13 15:19:31,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769906592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:31,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:31,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:19:31,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351320183] [2022-12-13 15:19:31,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:19:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:19:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:19:31,494 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) [2022-12-13 15:19:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:31,519 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2022-12-13 15:19:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:19:31,521 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 [2022-12-13 15:19:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:31,527 INFO L225 Difference]: With dead ends: 233 [2022-12-13 15:19:31,527 INFO L226 Difference]: Without dead ends: 231 [2022-12-13 15:19:31,529 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 [2022-12-13 15:19:31,531 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 [2022-12-13 15:19:31,532 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] [2022-12-13 15:19:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-12-13 15:19:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-12-13 15:19:31,560 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) [2022-12-13 15:19:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 260 transitions. [2022-12-13 15:19:31,564 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 260 transitions. Word has length 4 [2022-12-13 15:19:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:31,564 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 260 transitions. [2022-12-13 15:19:31,565 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) [2022-12-13 15:19:31,565 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 260 transitions. [2022-12-13 15:19:31,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 15:19:31,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:31,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:19:31,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:19:31,566 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)] === [2022-12-13 15:19:31,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash 889932981, now seen corresponding path program 1 times [2022-12-13 15:19:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:31,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792676328] [2022-12-13 15:19:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:31,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:31,580 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:19:31,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256528866] [2022-12-13 15:19:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:31,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:31,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:31,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:19:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:31,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:19:31,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:31,703 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 [2022-12-13 15:19:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:31,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:31,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:31,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792676328] [2022-12-13 15:19:31,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:19:31,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256528866] [2022-12-13 15:19:31,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256528866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:31,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:31,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:19:31,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132044287] [2022-12-13 15:19:31,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:31,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:19:31,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:19:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:19:31,713 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) [2022-12-13 15:19:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:31,840 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2022-12-13 15:19:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:19:31,841 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 [2022-12-13 15:19:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:31,842 INFO L225 Difference]: With dead ends: 230 [2022-12-13 15:19:31,843 INFO L226 Difference]: Without dead ends: 230 [2022-12-13 15:19:31,843 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 [2022-12-13 15:19:31,844 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, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:31,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 418 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:19:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-12-13 15:19:31,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-12-13 15:19:31,855 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) [2022-12-13 15:19:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 259 transitions. [2022-12-13 15:19:31,858 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 259 transitions. Word has length 6 [2022-12-13 15:19:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:31,859 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 259 transitions. [2022-12-13 15:19:31,859 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) [2022-12-13 15:19:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 259 transitions. [2022-12-13 15:19:31,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 15:19:31,859 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:31,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:31,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:19:32,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:32,062 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)] === [2022-12-13 15:19:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:32,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1818119056, now seen corresponding path program 1 times [2022-12-13 15:19:32,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:32,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818315436] [2022-12-13 15:19:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:32,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:32,098 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:19:32,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938948130] [2022-12-13 15:19:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:32,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:32,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:32,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:32,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:19:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:32,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 15:19:32,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:32,326 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 [2022-12-13 15:19:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:32,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:32,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:32,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818315436] [2022-12-13 15:19:32,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:19:32,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938948130] [2022-12-13 15:19:32,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938948130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:32,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:32,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:19:32,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51643455] [2022-12-13 15:19:32,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:32,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:19:32,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:32,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:19:32,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:19:32,348 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) [2022-12-13 15:19:32,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:32,486 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2022-12-13 15:19:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:19:32,487 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 [2022-12-13 15:19:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:32,488 INFO L225 Difference]: With dead ends: 239 [2022-12-13 15:19:32,488 INFO L226 Difference]: Without dead ends: 239 [2022-12-13 15:19:32,489 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 [2022-12-13 15:19:32,489 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, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:32,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 677 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:19:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-13 15:19:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-12-13 15:19:32,499 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) [2022-12-13 15:19:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2022-12-13 15:19:32,500 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 7 [2022-12-13 15:19:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:32,501 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2022-12-13 15:19:32,501 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) [2022-12-13 15:19:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2022-12-13 15:19:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 15:19:32,502 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:32,502 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] [2022-12-13 15:19:32,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:19:32,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 15:19:32,704 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)] === [2022-12-13 15:19:32,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash 253014343, now seen corresponding path program 1 times [2022-12-13 15:19:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:32,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592016799] [2022-12-13 15:19:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:32,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:32,815 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:19:32,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466855350] [2022-12-13 15:19:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:32,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:32,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:32,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:32,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:19:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:32,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 15:19:32,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:33,036 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 [2022-12-13 15:19:33,132 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 15 treesize of output 11 [2022-12-13 15:19:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-13 15:19:33,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:33,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:33,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592016799] [2022-12-13 15:19:33,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:19:33,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466855350] [2022-12-13 15:19:33,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466855350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:33,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:33,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:19:33,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280421690] [2022-12-13 15:19:33,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:33,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:19:33,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:19:33,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:19:33,348 INFO L87 Difference]: Start difference. First operand 239 states and 268 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) [2022-12-13 15:19:35,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:19:38,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:19:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:39,043 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2022-12-13 15:19:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:19:39,044 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 [2022-12-13 15:19:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:39,045 INFO L225 Difference]: With dead ends: 251 [2022-12-13 15:19:39,045 INFO L226 Difference]: Without dead ends: 241 [2022-12-13 15:19:39,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:39,046 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 19 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:39,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 899 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2022-12-13 15:19:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-13 15:19:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-12-13 15:19:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 143 states have (on average 1.7342657342657342) internal successors, (248), 226 states have internal predecessors, (248), 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) [2022-12-13 15:19:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2022-12-13 15:19:39,058 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 66 [2022-12-13 15:19:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:39,058 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2022-12-13 15:19:39,058 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) [2022-12-13 15:19:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2022-12-13 15:19:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 15:19:39,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:39,060 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] [2022-12-13 15:19:39,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 15:19:39,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:39,261 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)] === [2022-12-13 15:19:39,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash 851001466, now seen corresponding path program 1 times [2022-12-13 15:19:39,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:39,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122522123] [2022-12-13 15:19:39,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:39,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:39,324 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:19:39,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416772259] [2022-12-13 15:19:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:39,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:39,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:39,326 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:39,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:19:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:39,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 15:19:39,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:39,524 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 [2022-12-13 15:19:39,548 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 13 treesize of output 9 [2022-12-13 15:19:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 92 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 15:19:39,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:19:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 15:19:39,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:39,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122522123] [2022-12-13 15:19:39,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:19:39,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416772259] [2022-12-13 15:19:39,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416772259] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:19:39,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:19:39,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-12-13 15:19:39,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784500674] [2022-12-13 15:19:39,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:19:39,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:19:39,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:19:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:19:39,847 INFO L87 Difference]: Start difference. First operand 241 states and 270 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 15:19:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:40,172 INFO L93 Difference]: Finished difference Result 267 states and 298 transitions. [2022-12-13 15:19:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:19:40,173 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-12-13 15:19:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:40,175 INFO L225 Difference]: With dead ends: 267 [2022-12-13 15:19:40,175 INFO L226 Difference]: Without dead ends: 247 [2022-12-13 15:19:40,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:19:40,176 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 28 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:40,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1324 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 15:19:40,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-12-13 15:19:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-12-13 15:19:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 149 states have (on average 1.7046979865771812) internal successors, (254), 232 states have internal predecessors, (254), 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) [2022-12-13 15:19:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 276 transitions. [2022-12-13 15:19:40,182 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 276 transitions. Word has length 71 [2022-12-13 15:19:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:40,182 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 276 transitions. [2022-12-13 15:19:40,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 15:19:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 276 transitions. [2022-12-13 15:19:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 15:19:40,184 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:40,184 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] [2022-12-13 15:19:40,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:19:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:40,385 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)] === [2022-12-13 15:19:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash 678119687, now seen corresponding path program 2 times [2022-12-13 15:19:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:40,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454620349] [2022-12-13 15:19:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:40,441 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:19:40,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516857544] [2022-12-13 15:19:40,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:19:40,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:40,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:40,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:19:41,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:19:41,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:19:41,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 15:19:41,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:41,061 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 [2022-12-13 15:19:41,080 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 13 treesize of output 9 [2022-12-13 15:19:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 135 proven. 10 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-12-13 15:19:41,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:19:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 15 proven. 138 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-12-13 15:19:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454620349] [2022-12-13 15:19:41,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:19:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516857544] [2022-12-13 15:19:41,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516857544] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:19:41,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:19:41,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-12-13 15:19:41,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50274209] [2022-12-13 15:19:41,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:19:41,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:19:41,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:19:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:19:41,485 INFO L87 Difference]: Start difference. First operand 247 states and 276 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, (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) [2022-12-13 15:19:42,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:42,199 INFO L93 Difference]: Finished difference Result 267 states and 298 transitions. [2022-12-13 15:19:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 15:19:42,199 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, (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 86 [2022-12-13 15:19:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:42,200 INFO L225 Difference]: With dead ends: 267 [2022-12-13 15:19:42,200 INFO L226 Difference]: Without dead ends: 252 [2022-12-13 15:19:42,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2022-12-13 15:19:42,201 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 43 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:42,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2523 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 15:19:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-12-13 15:19:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-12-13 15:19:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 154 states have (on average 1.6818181818181819) internal successors, (259), 237 states have internal predecessors, (259), 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) [2022-12-13 15:19:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 281 transitions. [2022-12-13 15:19:42,206 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 281 transitions. Word has length 86 [2022-12-13 15:19:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:42,207 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 281 transitions. [2022-12-13 15:19:42,207 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, (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) [2022-12-13 15:19:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 281 transitions. [2022-12-13 15:19:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 15:19:42,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:42,209 INFO L195 NwaCegarLoop]: trace histogram [40, 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] [2022-12-13 15:19:42,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:19:42,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 15:19:42,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:19:42,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1486586055, now seen corresponding path program 3 times [2022-12-13 15:19:42,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:42,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202693213] [2022-12-13 15:19:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:42,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:42,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:19:42,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149201082] [2022-12-13 15:19:42,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:19:42,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:42,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:42,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:42,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:19:42,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:19:42,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:19:42,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 15:19:42,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:42,589 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 [2022-12-13 15:19:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2022-12-13 15:19:42,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:42,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:42,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202693213] [2022-12-13 15:19:42,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:19:42,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149201082] [2022-12-13 15:19:42,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149201082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:42,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:42,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:19:42,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005548029] [2022-12-13 15:19:42,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:42,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:19:42,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:19:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:19:42,609 INFO L87 Difference]: Start difference. First operand 252 states and 281 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 15:19:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:42,723 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2022-12-13 15:19:42,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:19:42,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 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 106 [2022-12-13 15:19:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:42,725 INFO L225 Difference]: With dead ends: 251 [2022-12-13 15:19:42,725 INFO L226 Difference]: Without dead ends: 251 [2022-12-13 15:19:42,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:19:42,726 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 16 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:42,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 661 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:19:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-12-13 15:19:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-12-13 15:19:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 154 states have (on average 1.6753246753246753) 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) [2022-12-13 15:19:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 280 transitions. [2022-12-13 15:19:42,733 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 280 transitions. Word has length 106 [2022-12-13 15:19:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 280 transitions. [2022-12-13 15:19:42,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 15:19:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 280 transitions. [2022-12-13 15:19:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 15:19:42,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:42,736 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] [2022-12-13 15:19:42,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 15:19:42,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 15:19:42,936 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)] === [2022-12-13 15:19:42,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:42,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2117878513, now seen corresponding path program 1 times [2022-12-13 15:19:42,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:42,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838501110] [2022-12-13 15:19:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:42,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:42,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:19:42,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614446635] [2022-12-13 15:19:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:42,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:42,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:42,979 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:42,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:19:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:43,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 15:19:43,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:43,253 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1459 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_1459))) is different from true [2022-12-13 15:19:43,337 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 15:19:43,337 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 14 [2022-12-13 15:19:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 60 refuted. 0 times theorem prover too weak. 733 trivial. 1 not checked. [2022-12-13 15:19:43,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:19:43,560 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 15:19:43,561 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 12 treesize of output 11 [2022-12-13 15:19:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 61 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2022-12-13 15:19:43,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838501110] [2022-12-13 15:19:43,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:19:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614446635] [2022-12-13 15:19:43,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614446635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:19:43,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:19:43,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2022-12-13 15:19:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265268217] [2022-12-13 15:19:43,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:19:43,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:19:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:43,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:19:43,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2022-12-13 15:19:43,574 INFO L87 Difference]: Start difference. First operand 251 states and 280 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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) [2022-12-13 15:19:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:44,200 INFO L93 Difference]: Finished difference Result 399 states and 459 transitions. [2022-12-13 15:19:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:19:44,201 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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 118 [2022-12-13 15:19:44,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:44,204 INFO L225 Difference]: With dead ends: 399 [2022-12-13 15:19:44,204 INFO L226 Difference]: Without dead ends: 399 [2022-12-13 15:19:44,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 220 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=261, Unknown=1, NotChecked=34, Total=380 [2022-12-13 15:19:44,205 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 470 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:44,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1544 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1007 Invalid, 0 Unknown, 393 Unchecked, 0.5s Time] [2022-12-13 15:19:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-12-13 15:19:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 249. [2022-12-13 15:19:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 154 states have (on average 1.6623376623376624) internal successors, (256), 234 states have internal predecessors, (256), 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) [2022-12-13 15:19:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2022-12-13 15:19:44,211 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 118 [2022-12-13 15:19:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:44,212 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2022-12-13 15:19:44,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 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) [2022-12-13 15:19:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2022-12-13 15:19:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 15:19:44,213 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:44,213 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] [2022-12-13 15:19:44,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:19:44,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:44,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:19:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:44,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2117878512, now seen corresponding path program 1 times [2022-12-13 15:19:44,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:44,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507504726] [2022-12-13 15:19:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:44,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:44,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:19:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030423255] [2022-12-13 15:19:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:44,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:44,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:44,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:19:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:46,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 73 conjunts are in the unsatisfiable core [2022-12-13 15:19:46,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:46,890 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 [2022-12-13 15:19:53,779 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2028 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2028) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:19:53,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:19:53,835 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 16 treesize of output 18 [2022-12-13 15:19:53,840 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:19:53,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:19:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 503 proven. 316 refuted. 0 times theorem prover too weak. 473 trivial. 103 not checked. [2022-12-13 15:19:54,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:19:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:54,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507504726] [2022-12-13 15:19:54,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:19:54,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030423255] [2022-12-13 15:19:54,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030423255] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:19:54,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:19:54,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-12-13 15:19:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199833923] [2022-12-13 15:19:54,145 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:19:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 15:19:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 15:19:54,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=737, Unknown=3, NotChecked=54, Total=870 [2022-12-13 15:19:54,147 INFO L87 Difference]: Start difference. First operand 249 states and 278 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 15:19:56,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:19:58,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:00,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:04,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:06,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:10,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:12,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:16,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:18,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:22,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:20:49,691 WARN L233 SmtUtils]: Spent 7.18s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:21:01,962 WARN L233 SmtUtils]: Spent 11.10s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:21:04,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:06,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:08,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:10,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:12,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:14,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:16,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:19,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:21,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:26,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:28,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:30,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:30,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:21:30,808 INFO L93 Difference]: Finished difference Result 413 states and 478 transitions. [2022-12-13 15:21:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:21:30,809 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 118 [2022-12-13 15:21:30,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:21:30,810 INFO L225 Difference]: With dead ends: 413 [2022-12-13 15:21:30,810 INFO L226 Difference]: Without dead ends: 413 [2022-12-13 15:21:30,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=187, Invalid=1610, Unknown=13, NotChecked=82, Total=1892 [2022-12-13 15:21:30,811 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 325 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 29 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 4700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 49.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:21:30,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1328 Invalid, 4700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4344 Invalid, 22 Unknown, 305 Unchecked, 49.3s Time] [2022-12-13 15:21:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-12-13 15:21:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 247. [2022-12-13 15:21:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 154 states have (on average 1.6493506493506493) internal successors, (254), 232 states have internal predecessors, (254), 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) [2022-12-13 15:21:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 276 transitions. [2022-12-13 15:21:30,817 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 276 transitions. Word has length 118 [2022-12-13 15:21:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:21:30,817 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 276 transitions. [2022-12-13 15:21:30,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 15:21:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 276 transitions. [2022-12-13 15:21:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 15:21:30,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:21:30,818 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, 1, 1] [2022-12-13 15:21:30,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 15:21:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:21:31,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:21:31,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 533247536, now seen corresponding path program 1 times [2022-12-13 15:21:31,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:21:31,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781073120] [2022-12-13 15:21:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:21:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:21:31,073 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:21:31,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243123136] [2022-12-13 15:21:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:21:31,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:21:31,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:21:31,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:21:31,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 15:21:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:31,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 15:21:31,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:31,409 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2608 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2608))) is different from true [2022-12-13 15:21:31,488 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 15:21:31,489 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 14 [2022-12-13 15:21:31,508 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2609 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2609))) is different from true [2022-12-13 15:21:31,588 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 15:21:31,589 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 14 [2022-12-13 15:21:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 147 refuted. 0 times theorem prover too weak. 526 trivial. 3 not checked. [2022-12-13 15:21:31,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:21:31,960 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 15:21:31,961 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 12 treesize of output 11 [2022-12-13 15:21:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 149 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-12-13 15:21:31,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:21:31,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781073120] [2022-12-13 15:21:31,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:21:31,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243123136] [2022-12-13 15:21:31,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243123136] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:21:31,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:21:31,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2022-12-13 15:21:31,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37449703] [2022-12-13 15:21:31,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:21:31,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:21:31,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:21:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:21:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=154, Unknown=2, NotChecked=50, Total=240 [2022-12-13 15:21:31,975 INFO L87 Difference]: Start difference. First operand 247 states and 276 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 15:21:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:21:33,101 INFO L93 Difference]: Finished difference Result 394 states and 454 transitions. [2022-12-13 15:21:33,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:21:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 120 [2022-12-13 15:21:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:21:33,103 INFO L225 Difference]: With dead ends: 394 [2022-12-13 15:21:33,103 INFO L226 Difference]: Without dead ends: 394 [2022-12-13 15:21:33,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 218 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=372, Unknown=2, NotChecked=82, Total=552 [2022-12-13 15:21:33,103 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 451 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 54 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 842 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:21:33,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1909 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1277 Invalid, 40 Unknown, 842 Unchecked, 1.0s Time] [2022-12-13 15:21:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-12-13 15:21:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 244. [2022-12-13 15:21:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 154 states have (on average 1.62987012987013) internal successors, (251), 229 states have internal predecessors, (251), 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) [2022-12-13 15:21:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 273 transitions. [2022-12-13 15:21:33,109 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 273 transitions. Word has length 120 [2022-12-13 15:21:33,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:21:33,109 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 273 transitions. [2022-12-13 15:21:33,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 15:21:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 273 transitions. [2022-12-13 15:21:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 15:21:33,110 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:21:33,110 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, 1, 1] [2022-12-13 15:21:33,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 15:21:33,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:21:33,312 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:21:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:33,314 INFO L85 PathProgramCache]: Analyzing trace with hash 533247537, now seen corresponding path program 1 times [2022-12-13 15:21:33,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:21:33,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846063552] [2022-12-13 15:21:33,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:21:33,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:21:33,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:21:33,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331428790] [2022-12-13 15:21:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:21:33,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:21:33,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:21:33,398 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:21:33,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 15:21:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:33,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 103 conjunts are in the unsatisfiable core [2022-12-13 15:21:33,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:33,724 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 [2022-12-13 15:21:47,671 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3193 Int) (v_ArrVal_3194 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3193) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3194)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:21:48,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:48,252 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 16 treesize of output 18 [2022-12-13 15:21:48,342 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:21:48,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:21:48,375 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_3195 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3195) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:21:49,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:21:49,707 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 16 treesize of output 18 [2022-12-13 15:21:49,744 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:21:49,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:21:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 611 proven. 324 refuted. 2 times theorem prover too weak. 283 trivial. 175 not checked. [2022-12-13 15:21:50,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:21:50,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:21:50,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846063552] [2022-12-13 15:21:50,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:21:50,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331428790] [2022-12-13 15:21:50,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331428790] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:21:50,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:21:50,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-12-13 15:21:50,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576211468] [2022-12-13 15:21:50,990 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:21:50,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 15:21:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:21:50,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 15:21:50,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1027, Unknown=10, NotChecked=130, Total=1260 [2022-12-13 15:21:50,992 INFO L87 Difference]: Start difference. First operand 244 states and 273 transitions. Second operand has 34 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 15:21:53,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:55,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:21:57,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:22:01,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:22:03,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:22:05,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:22:10,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:22:15,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:22:40,204 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:22:52,197 WARN L233 SmtUtils]: Spent 10.77s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:22:56,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:22:58,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:00,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:02,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:04,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:06,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:14,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:23:14,991 INFO L93 Difference]: Finished difference Result 389 states and 449 transitions. [2022-12-13 15:23:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 15:23:14,992 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 120 [2022-12-13 15:23:14,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:23:14,994 INFO L225 Difference]: With dead ends: 389 [2022-12-13 15:23:14,994 INFO L226 Difference]: Without dead ends: 389 [2022-12-13 15:23:14,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 65.0s TimeCoverageRelationStatistics Valid=210, Invalid=2035, Unknown=19, NotChecked=186, Total=2450 [2022-12-13 15:23:14,994 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 474 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 5648 mSolverCounterSat, 52 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 6253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5648 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 539 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:23:14,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1419 Invalid, 6253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 5648 Invalid, 14 Unknown, 539 Unchecked, 34.7s Time] [2022-12-13 15:23:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-12-13 15:23:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 242. [2022-12-13 15:23:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 154 states have (on average 1.6168831168831168) internal successors, (249), 227 states have internal predecessors, (249), 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) [2022-12-13 15:23:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2022-12-13 15:23:15,000 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 120 [2022-12-13 15:23:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:23:15,000 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2022-12-13 15:23:15,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 15:23:15,000 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2022-12-13 15:23:15,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 15:23:15,001 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:23:15,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:15,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 15:23:15,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:23:15,202 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:23:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash -33837628, now seen corresponding path program 1 times [2022-12-13 15:23:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:15,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677985741] [2022-12-13 15:23:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:15,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:15,240 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:23:15,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866025122] [2022-12-13 15:23:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:15,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:23:15,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:23:15,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:23:15,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 15:23:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:15,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 15:23:15,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:23:15,678 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3799 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3799)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:23:15,747 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:23:15,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:23:15,757 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3800 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_3800))) is different from true [2022-12-13 15:23:15,776 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3800 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_3800))) is different from true [2022-12-13 15:23:15,779 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3800 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_3800))) is different from true [2022-12-13 15:23:15,783 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3800 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_3800))) is different from true [2022-12-13 15:23:15,795 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:23:15,795 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 [2022-12-13 15:23:15,824 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3801 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3801))) is different from true [2022-12-13 15:23:15,900 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:23:15,901 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 [2022-12-13 15:23:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 659 proven. 60 refuted. 0 times theorem prover too weak. 289 trivial. 387 not checked. [2022-12-13 15:23:15,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:23:16,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:16,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677985741] [2022-12-13 15:23:16,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:23:16,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866025122] [2022-12-13 15:23:16,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866025122] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:23:16,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:23:16,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-12-13 15:23:16,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361013687] [2022-12-13 15:23:16,569 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:23:16,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:23:16,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:16,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:23:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=484, Unknown=6, NotChecked=294, Total=870 [2022-12-13 15:23:16,571 INFO L87 Difference]: Start difference. First operand 242 states and 271 transitions. Second operand has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 15:23:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:23:17,701 INFO L93 Difference]: Finished difference Result 386 states and 445 transitions. [2022-12-13 15:23:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:23:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 127 [2022-12-13 15:23:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:23:17,702 INFO L225 Difference]: With dead ends: 386 [2022-12-13 15:23:17,703 INFO L226 Difference]: Without dead ends: 386 [2022-12-13 15:23:17,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=779, Unknown=6, NotChecked=378, Total=1332 [2022-12-13 15:23:17,703 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 426 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 49 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 1689 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:23:17,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1918 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1286 Invalid, 40 Unknown, 1689 Unchecked, 0.9s Time] [2022-12-13 15:23:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-12-13 15:23:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 239. [2022-12-13 15:23:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 154 states have (on average 1.5974025974025974) 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) [2022-12-13 15:23:17,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2022-12-13 15:23:17,708 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 127 [2022-12-13 15:23:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:23:17,708 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2022-12-13 15:23:17,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 15:23:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2022-12-13 15:23:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 15:23:17,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:23:17,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:17,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 15:23:17,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 15:23:17,911 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:23:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash -33837627, now seen corresponding path program 1 times [2022-12-13 15:23:17,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:17,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092754199] [2022-12-13 15:23:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:17,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:17,955 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:23:17,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78066855] [2022-12-13 15:23:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:17,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:23:17,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:23:17,956 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:23:17,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 15:23:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:19,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 129 conjunts are in the unsatisfiable core [2022-12-13 15:23:19,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:23:19,820 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 [2022-12-13 15:23:31,409 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:23:31,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:23:31,545 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 16 treesize of output 18 [2022-12-13 15:23:35,056 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 15:23:35,056 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 22 treesize of output 33 [2022-12-13 15:23:35,117 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 16 treesize of output 18 [2022-12-13 15:23:37,478 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4416 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4416) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:23:37,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:23:37,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:23:37,652 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 15:23:37,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 15:23:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 435 proven. 492 refuted. 0 times theorem prover too weak. 243 trivial. 225 not checked. [2022-12-13 15:23:38,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:23:39,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:39,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092754199] [2022-12-13 15:23:39,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:23:39,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78066855] [2022-12-13 15:23:39,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78066855] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:23:39,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:23:39,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2022-12-13 15:23:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326107751] [2022-12-13 15:23:39,498 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:23:39,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 15:23:39,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:39,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 15:23:39,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1437, Unknown=4, NotChecked=76, Total=1640 [2022-12-13 15:23:39,499 INFO L87 Difference]: Start difference. First operand 239 states and 268 transitions. Second operand has 39 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 15:23:41,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:43,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:45,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:49,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:52,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:56,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:23:58,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:24:00,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:24:04,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:24:08,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:24:28,369 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 63 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:24:36,421 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 80 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:24:43,738 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 97 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:24:51,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:24:53,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:24:56,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:24:58,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:25:02,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:25:09,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:25:13,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:25:19,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:25:24,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:25:34,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:25:34,009 INFO L93 Difference]: Finished difference Result 396 states and 459 transitions. [2022-12-13 15:25:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 15:25:34,010 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 127 [2022-12-13 15:25:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:25:34,012 INFO L225 Difference]: With dead ends: 396 [2022-12-13 15:25:34,012 INFO L226 Difference]: Without dead ends: 396 [2022-12-13 15:25:34,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 84.6s TimeCoverageRelationStatistics Valid=464, Invalid=4492, Unknown=18, NotChecked=138, Total=5112 [2022-12-13 15:25:34,013 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 718 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 5888 mSolverCounterSat, 94 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 6287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 5888 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 47.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:25:34,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1369 Invalid, 6287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 5888 Invalid, 19 Unknown, 286 Unchecked, 47.2s Time] [2022-12-13 15:25:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-12-13 15:25:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 236. [2022-12-13 15:25:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 154 states have (on average 1.577922077922078) 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) [2022-12-13 15:25:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 265 transitions. [2022-12-13 15:25:34,018 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 265 transitions. Word has length 127 [2022-12-13 15:25:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:25:34,018 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 265 transitions. [2022-12-13 15:25:34,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 2.085714285714286) internal successors, (73), 35 states have internal predecessors, (73), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 15:25:34,018 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 265 transitions. [2022-12-13 15:25:34,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 15:25:34,019 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:25:34,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:25:34,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 15:25:34,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:34,220 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:25:34,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:25:34,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1048966434, now seen corresponding path program 1 times [2022-12-13 15:25:34,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:25:34,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513130047] [2022-12-13 15:25:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:25:34,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:25:34,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:25:34,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265989170] [2022-12-13 15:25:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:25:34,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:25:34,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:25:34,258 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:25:34,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 15:25:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:43,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-13 15:25:43,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:25:43,650 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 [2022-12-13 15:25:53,005 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:25:53,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:25:53,080 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 16 treesize of output 18 [2022-12-13 15:25:54,748 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_5023 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5023) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:25:54,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:25:54,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:25:54,797 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 15:25:54,797 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 16 treesize of output 18 [2022-12-13 15:25:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 558 proven. 404 refuted. 0 times theorem prover too weak. 269 trivial. 164 not checked. [2022-12-13 15:25:56,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:25:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:25:58,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513130047] [2022-12-13 15:25:58,561 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:25:58,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265989170] [2022-12-13 15:25:58,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265989170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:25:58,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:25:58,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-12-13 15:25:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661049879] [2022-12-13 15:25:58,562 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:25:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 15:25:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:25:58,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 15:25:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1162, Unknown=3, NotChecked=68, Total=1332 [2022-12-13 15:25:58,563 INFO L87 Difference]: Start difference. First operand 236 states and 265 transitions. Second operand has 35 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 15:26:01,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:05,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:07,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:09,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:11,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:13,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:16,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:20,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:22,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:26:39,699 WARN L233 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 63 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:26:49,006 WARN L233 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 80 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:26:58,265 WARN L233 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 97 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:27:00,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:02,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:04,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:06,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:08,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:10,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:13,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:19,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:25,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:29,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:27:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:27:44,402 INFO L93 Difference]: Finished difference Result 393 states and 455 transitions. [2022-12-13 15:27:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 15:27:44,408 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 128 [2022-12-13 15:27:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:27:44,409 INFO L225 Difference]: With dead ends: 393 [2022-12-13 15:27:44,409 INFO L226 Difference]: Without dead ends: 393 [2022-12-13 15:27:44,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 72.2s TimeCoverageRelationStatistics Valid=340, Invalid=2956, Unknown=14, NotChecked=112, Total=3422 [2022-12-13 15:27:44,410 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 526 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 5951 mSolverCounterSat, 54 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 6273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5951 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 46.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:27:44,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1535 Invalid, 6273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5951 Invalid, 19 Unknown, 249 Unchecked, 46.7s Time] [2022-12-13 15:27:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-12-13 15:27:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 235. [2022-12-13 15:27:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 154 states have (on average 1.5714285714285714) internal successors, (242), 220 states have internal predecessors, (242), 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) [2022-12-13 15:27:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 264 transitions. [2022-12-13 15:27:44,415 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 264 transitions. Word has length 128 [2022-12-13 15:27:44,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:27:44,415 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 264 transitions. [2022-12-13 15:27:44,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.242424242424242) internal successors, (74), 32 states have internal predecessors, (74), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 15:27:44,415 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 264 transitions. [2022-12-13 15:27:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 15:27:44,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:27:44,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:27:44,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 15:27:44,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 15:27:44,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:27:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:27:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 647419782, now seen corresponding path program 1 times [2022-12-13 15:27:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:27:44,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573041771] [2022-12-13 15:27:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:27:44,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:27:44,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:27:44,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182423472] [2022-12-13 15:27:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:27:44,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:27:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:27:44,803 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:27:44,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 15:27:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:27:45,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 85 conjunts are in the unsatisfiable core [2022-12-13 15:27:45,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:27:45,429 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:27:45,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:27:45,660 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 15:27:45,660 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 22 treesize of output 33 [2022-12-13 15:27:45,748 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5653 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5653))) is different from true [2022-12-13 15:27:45,767 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5653 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_5653))) is different from true [2022-12-13 15:27:45,770 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5653 Int)) (= (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_5653) |c_#valid|)) is different from true [2022-12-13 15:27:45,773 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5653 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_5653))) is different from true [2022-12-13 15:27:45,797 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 15:27:45,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-12-13 15:27:45,895 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5654 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5654))) is different from true [2022-12-13 15:27:46,024 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-12-13 15:27:46,024 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 31 treesize of output 52 [2022-12-13 15:27:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 509 proven. 356 refuted. 0 times theorem prover too weak. 202 trivial. 328 not checked. [2022-12-13 15:27:46,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:27:46,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:27:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573041771] [2022-12-13 15:27:46,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:27:46,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182423472] [2022-12-13 15:27:46,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182423472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:27:46,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:27:46,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-12-13 15:27:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626656257] [2022-12-13 15:27:46,383 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:27:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 15:27:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:27:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 15:27:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=770, Unknown=5, NotChecked=300, Total=1190 [2022-12-13 15:27:46,385 INFO L87 Difference]: Start difference. First operand 235 states and 264 transitions. Second operand has 33 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 28 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 15:27:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:27:49,016 INFO L93 Difference]: Finished difference Result 378 states and 437 transitions. [2022-12-13 15:27:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 15:27:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 28 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 134 [2022-12-13 15:27:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:27:49,019 INFO L225 Difference]: With dead ends: 378 [2022-12-13 15:27:49,019 INFO L226 Difference]: Without dead ends: 378 [2022-12-13 15:27:49,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=1555, Unknown=5, NotChecked=430, Total=2256 [2022-12-13 15:27:49,020 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 577 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 72 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 4628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 1991 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:27:49,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 3155 Invalid, 4628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2530 Invalid, 35 Unknown, 1991 Unchecked, 2.2s Time] [2022-12-13 15:27:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-13 15:27:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 232. [2022-12-13 15:27:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 154 states have (on average 1.551948051948052) internal successors, (239), 217 states have internal predecessors, (239), 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) [2022-12-13 15:27:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 261 transitions. [2022-12-13 15:27:49,025 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 261 transitions. Word has length 134 [2022-12-13 15:27:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:27:49,025 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 261 transitions. [2022-12-13 15:27:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 28 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 15:27:49,025 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 261 transitions. [2022-12-13 15:27:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 15:27:49,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:27:49,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:27:49,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 15:27:49,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 15:27:49,227 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:27:49,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:27:49,227 INFO L85 PathProgramCache]: Analyzing trace with hash 647419783, now seen corresponding path program 1 times [2022-12-13 15:27:49,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:27:49,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115391589] [2022-12-13 15:27:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:27:49,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:27:49,269 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:27:49,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870667415] [2022-12-13 15:27:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:27:49,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:27:49,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:27:49,270 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:27:49,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 15:27:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:27:51,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 141 conjunts are in the unsatisfiable core [2022-12-13 15:27:51,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:27:51,755 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 [2022-12-13 15:28:03,799 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6284 Int) (v_ArrVal_6283 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6284) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6283)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:28:03,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:28:03,977 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 16 treesize of output 18 [2022-12-13 15:28:04,062 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:28:04,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:28:05,247 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:28:05,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:28:05,279 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 16 treesize of output 18 [2022-12-13 15:28:08,593 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 15:28:08,594 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 16 treesize of output 18 [2022-12-13 15:28:08,624 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 16 treesize of output 18 [2022-12-13 15:28:10,438 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_6288 Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|))) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6288) |c_#length|) (<= (mod .cse0 4294967296) v_ArrVal_6288) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| .cse0)))) is different from true [2022-12-13 15:28:13,209 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_6288 Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (mod (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|) 4294967296))) (and (< 4 .cse0) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6288) |c_#length|) (<= .cse0 v_ArrVal_6288) (not (< 5 .cse0))))) is different from true [2022-12-13 15:28:13,887 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:28:13,887 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 [2022-12-13 15:28:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 221 proven. 662 refuted. 0 times theorem prover too weak. 121 trivial. 391 not checked. [2022-12-13 15:28:21,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:28:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:25,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115391589] [2022-12-13 15:28:25,038 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:28:25,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870667415] [2022-12-13 15:28:25,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870667415] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:28:25,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:28:25,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2022-12-13 15:28:25,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854281290] [2022-12-13 15:28:25,038 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:28:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 15:28:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 15:28:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2007, Unknown=19, NotChecked=276, Total=2450 [2022-12-13 15:28:25,040 INFO L87 Difference]: Start difference. First operand 232 states and 261 transitions. Second operand has 48 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 43 states have internal predecessors, (98), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 15:28:27,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:28:29,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:28:33,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:28:37,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:28:41,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:28:45,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:28:50,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:28:54,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:29:13,251 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 66 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:29:21,311 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 83 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:29:28,810 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 100 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:29:51,926 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 62 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:29:54,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:05,417 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 73 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:30:07,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:19,249 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 84 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:30:28,857 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 95 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:30:30,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:36,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:38,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:41,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:43,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:45,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:49,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:51,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:55,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:57,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:30:59,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:01,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:03,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:05,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:07,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:09,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:11,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:13,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:15,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:17,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:19,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:21,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:23,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:25,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:28,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:30,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:31:30,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:31:30,250 INFO L93 Difference]: Finished difference Result 379 states and 440 transitions. [2022-12-13 15:31:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 15:31:30,251 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 43 states have internal predecessors, (98), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 134 [2022-12-13 15:31:30,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:31:30,253 INFO L225 Difference]: With dead ends: 379 [2022-12-13 15:31:30,253 INFO L226 Difference]: Without dead ends: 379 [2022-12-13 15:31:30,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 131.1s TimeCoverageRelationStatistics Valid=424, Invalid=4244, Unknown=36, NotChecked=408, Total=5112 [2022-12-13 15:31:30,254 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 803 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 6465 mSolverCounterSat, 88 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 7449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 6465 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 860 IncrementalHoareTripleChecker+Unchecked, 81.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:31:30,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1354 Invalid, 7449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 6465 Invalid, 36 Unknown, 860 Unchecked, 81.3s Time] [2022-12-13 15:31:30,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-12-13 15:31:30,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 230. [2022-12-13 15:31:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 154 states have (on average 1.5389610389610389) internal successors, (237), 215 states have internal predecessors, (237), 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) [2022-12-13 15:31:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 259 transitions. [2022-12-13 15:31:30,262 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 259 transitions. Word has length 134 [2022-12-13 15:31:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:31:30,262 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 259 transitions. [2022-12-13 15:31:30,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 43 states have internal predecessors, (98), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 15:31:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 259 transitions. [2022-12-13 15:31:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 15:31:30,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:31:30,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:31:30,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 15:31:30,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 15:31:30,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:31:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:31:30,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1526489254, now seen corresponding path program 1 times [2022-12-13 15:31:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:31:30,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823030303] [2022-12-13 15:31:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:30,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:31:30,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:31:30,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129791519] [2022-12-13 15:31:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:30,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:31:30,615 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:31:30,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 15:31:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:31:30,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-13 15:31:30,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:31:31,142 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:31:31,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:31:31,176 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6941 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6941)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:31:31,229 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 15:31:31,229 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 22 treesize of output 33 [2022-12-13 15:31:31,244 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6942 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_6942))) is different from true [2022-12-13 15:31:31,256 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6942 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_6942))) is different from true [2022-12-13 15:31:31,258 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6942 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_6942))) is different from true [2022-12-13 15:31:31,261 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6942 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_6942))) is different from true [2022-12-13 15:31:31,278 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 15:31:31,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-12-13 15:31:31,355 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6943 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_6943))) is different from true [2022-12-13 15:31:31,372 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6943 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_6943))) is different from true [2022-12-13 15:31:31,375 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6943 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_6943))) is different from true [2022-12-13 15:31:31,377 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6943 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_6943))) is different from true [2022-12-13 15:31:31,409 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-12-13 15:31:31,409 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 31 treesize of output 52 [2022-12-13 15:31:31,517 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6944 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6944))) is different from true [2022-12-13 15:31:31,604 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-12-13 15:31:31,604 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 38 treesize of output 59 [2022-12-13 15:31:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 5 proven. 208 refuted. 0 times theorem prover too weak. 205 trivial. 977 not checked. [2022-12-13 15:31:32,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:31:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:31:32,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823030303] [2022-12-13 15:31:32,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:31:32,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129791519] [2022-12-13 15:31:32,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129791519] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:31:32,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:31:32,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-12-13 15:31:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429328353] [2022-12-13 15:31:32,752 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:31:32,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 15:31:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:31:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 15:31:32,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=446, Unknown=11, NotChecked=510, Total=1056 [2022-12-13 15:31:32,753 INFO L87 Difference]: Start difference. First operand 230 states and 259 transitions. Second operand has 30 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 25 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 15:31:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:31:34,453 INFO L93 Difference]: Finished difference Result 369 states and 427 transitions. [2022-12-13 15:31:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:31:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 25 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 141 [2022-12-13 15:31:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:31:34,454 INFO L225 Difference]: With dead ends: 369 [2022-12-13 15:31:34,454 INFO L226 Difference]: Without dead ends: 369 [2022-12-13 15:31:34,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=795, Unknown=11, NotChecked=670, Total=1640 [2022-12-13 15:31:34,455 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 648 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 94 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 5709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 3966 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:31:34,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2278 Invalid, 5709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1615 Invalid, 34 Unknown, 3966 Unchecked, 1.4s Time] [2022-12-13 15:31:34,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-12-13 15:31:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 227. [2022-12-13 15:31:34,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 212 states have internal predecessors, (234), 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) [2022-12-13 15:31:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 256 transitions. [2022-12-13 15:31:34,459 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 256 transitions. Word has length 141 [2022-12-13 15:31:34,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:31:34,460 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 256 transitions. [2022-12-13 15:31:34,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 25 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 15:31:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 256 transitions. [2022-12-13 15:31:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 15:31:34,460 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:31:34,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:31:34,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 15:31:34,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:34,662 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-12-13 15:31:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:31:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1526489253, now seen corresponding path program 1 times [2022-12-13 15:31:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:31:34,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898716631] [2022-12-13 15:31:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:34,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:31:34,714 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:31:34,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749101198] [2022-12-13 15:31:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:31:34,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:31:34,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:31:34,716 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:31:34,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38fa35fb-5e5c-481e-aeb6-eca864565dd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 15:31:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:31:38,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 172 conjunts are in the unsatisfiable core [2022-12-13 15:31:38,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:31:38,554 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-13 15:31:38,561 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 [2022-12-13 15:31:49,702 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:31:49,702 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 [2022-12-13 15:31:49,843 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 15:31:49,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 15:31:53,828 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:31:53,829 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 [2022-12-13 15:31:53,981 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 15:31:53,981 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 22 treesize of output 33 [2022-12-13 15:31:55,708 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:31:55,708 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 [2022-12-13 15:31:55,903 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 15:31:55,904 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 22 treesize of output 33 [2022-12-13 15:31:59,773 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:31:59,773 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 [2022-12-13 15:31:59,905 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-13 15:31:59,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 42 [2022-12-13 15:32:02,170 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7606 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_7606) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 15:32:02,255 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:32:02,255 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 28 treesize of output 34 [2022-12-13 15:32:02,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:32:02,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 127 [2022-12-13 15:32:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 102 proven. 748 refuted. 0 times theorem prover too weak. 240 trivial. 305 not checked. [2022-12-13 15:32:06,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:32:08,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:08,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898716631] [2022-12-13 15:32:08,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:32:08,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749101198] [2022-12-13 15:32:08,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749101198] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:32:08,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:32:08,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-12-13 15:32:08,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544534911] [2022-12-13 15:32:08,189 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 15:32:08,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-13 15:32:08,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-13 15:32:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1993, Unknown=18, NotChecked=90, Total=2256 [2022-12-13 15:32:08,190 INFO L87 Difference]: Start difference. First operand 227 states and 256 transitions. Second operand has 45 states, 42 states have (on average 2.142857142857143) internal successors, (90), 38 states have internal predecessors, (90), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 15:32:10,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:12,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:14,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:16,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:20,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:22,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:25,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:27,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:31,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:35,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:38,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:32:50,157 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 54 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:33:09,560 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 124 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:33:41,627 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 67 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 15:33:43,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:33:45,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:33:47,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:33:49,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:33:53,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:33:56,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:33:58,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:33:59,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:05,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:08,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:10,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:14,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:16,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:18,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:20,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:26,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 15:34:35,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]