./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:20:41,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:20:41,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:20:41,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:20:41,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:20:41,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:20:41,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:20:41,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:20:41,307 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:20:41,308 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:20:41,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:20:41,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:20:41,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:20:41,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:20:41,310 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:20:41,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:20:41,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:20:41,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:20:41,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:20:41,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:20:41,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:20:41,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:20:41,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:20:41,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:20:41,315 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:20:41,316 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:20:41,316 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:20:41,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:20:41,317 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:20:41,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:20:41,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:20:41,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:20:41,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:20:41,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:20:41,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:20:41,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:20:41,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:20:41,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:20:41,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:20:41,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:20:41,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:20:41,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:20:41,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:20:41,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:20:41,321 INFO L153 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_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da [2023-11-28 20:20:41,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:20:41,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:20:41,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:20:41,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:20:41,577 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:20:41,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2023-11-28 20:20:44,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:20:44,715 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:20:44,715 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2023-11-28 20:20:44,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/data/82c05b8fb/13414717a02b4b64a9900c3bac3deb1c/FLAG611e6bd31 [2023-11-28 20:20:44,776 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/data/82c05b8fb/13414717a02b4b64a9900c3bac3deb1c [2023-11-28 20:20:44,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:20:44,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:20:44,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:20:44,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:20:44,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:20:44,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:20:44" (1/1) ... [2023-11-28 20:20:44,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18fa442b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:44, skipping insertion in model container [2023-11-28 20:20:44,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:20:44" (1/1) ... [2023-11-28 20:20:44,847 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:20:45,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:20:45,447 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:20:45,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:20:45,621 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:20:45,629 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:20:45,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45 WrapperNode [2023-11-28 20:20:45,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:20:45,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:20:45,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:20:45,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:20:45,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,756 INFO L138 Inliner]: procedures = 282, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1552 [2023-11-28 20:20:45,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:20:45,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:20:45,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:20:45,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:20:45,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,784 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,910 INFO L175 MemorySlicer]: Split 314 memory accesses to 5 slices as follows [2, 5, 3, 270, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 64 writes are split as follows [0, 1, 2, 57, 4]. [2023-11-28 20:20:45,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,973 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:45,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:46,002 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:46,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:20:46,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:20:46,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:20:46,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:20:46,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (1/1) ... [2023-11-28 20:20:46,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:20:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:46,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:20:46,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:20:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-28 20:20:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-28 20:20:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:20:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-28 20:20:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-28 20:20:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-28 20:20:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-28 20:20:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-28 20:20:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-28 20:20:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:20:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-28 20:20:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-28 20:20:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:20:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:20:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:20:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:20:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 20:20:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-28 20:20:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-28 20:20:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:20:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:20:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:20:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:20:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 20:20:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 20:20:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:20:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-28 20:20:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-28 20:20:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-28 20:20:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-28 20:20:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-28 20:20:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-28 20:20:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-28 20:20:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-28 20:20:46,088 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-28 20:20:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:20:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:20:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:20:46,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:20:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 20:20:46,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:20:46,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:20:46,327 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:20:46,329 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:20:47,760 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:20:47,814 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:20:47,814 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-28 20:20:47,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:20:47 BoogieIcfgContainer [2023-11-28 20:20:47,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:20:47,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:20:47,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:20:47,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:20:47,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:20:44" (1/3) ... [2023-11-28 20:20:47,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfd1501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:20:47, skipping insertion in model container [2023-11-28 20:20:47,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:20:45" (2/3) ... [2023-11-28 20:20:47,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfd1501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:20:47, skipping insertion in model container [2023-11-28 20:20:47,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:20:47" (3/3) ... [2023-11-28 20:20:47,823 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-2.i [2023-11-28 20:20:47,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:20:47,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-28 20:20:47,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:20:47,911 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@985ddf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:20:47,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-28 20:20:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 408 states have (on average 1.6862745098039216) internal successors, (688), 425 states have internal predecessors, (688), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-28 20:20:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-28 20:20:47,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:47,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 20:20:47,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:47,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash -620020903, now seen corresponding path program 1 times [2023-11-28 20:20:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:47,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206286756] [2023-11-28 20:20:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:47,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:48,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:48,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206286756] [2023-11-28 20:20:48,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 20:20:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85479975] [2023-11-28 20:20:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:48,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:48,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:48,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:20:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:48,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 20:20:48,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:48,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:48,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85479975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:48,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:48,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:20:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143535790] [2023-11-28 20:20:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:48,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 20:20:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 20:20:48,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:20:48,426 INFO L87 Difference]: Start difference. First operand has 447 states, 408 states have (on average 1.6862745098039216) internal successors, (688), 425 states have internal predecessors, (688), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-28 20:20:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:48,508 INFO L93 Difference]: Finished difference Result 888 states and 1462 transitions. [2023-11-28 20:20:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 20:20:48,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-11-28 20:20:48,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:48,525 INFO L225 Difference]: With dead ends: 888 [2023-11-28 20:20:48,525 INFO L226 Difference]: Without dead ends: 435 [2023-11-28 20:20:48,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:20:48,535 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:48,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 632 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:20:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-28 20:20:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2023-11-28 20:20:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 402 states have (on average 1.4950248756218905) internal successors, (601), 416 states have internal predecessors, (601), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-28 20:20:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 631 transitions. [2023-11-28 20:20:48,594 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 631 transitions. Word has length 6 [2023-11-28 20:20:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:48,595 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 631 transitions. [2023-11-28 20:20:48,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-28 20:20:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 631 transitions. [2023-11-28 20:20:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-28 20:20:48,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:48,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 20:20:48,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:20:48,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 20:20:48,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:48,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:48,797 INFO L85 PathProgramCache]: Analyzing trace with hash -620018981, now seen corresponding path program 1 times [2023-11-28 20:20:48,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:48,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682608889] [2023-11-28 20:20:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:48,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:48,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:48,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364237984] [2023-11-28 20:20:48,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:48,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:48,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:48,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:48,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:20:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:49,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 20:20:49,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:49,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 20:20:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:49,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:49,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682608889] [2023-11-28 20:20:49,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364237984] [2023-11-28 20:20:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364237984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:49,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:49,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:20:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089701225] [2023-11-28 20:20:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:49,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:20:49,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:49,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:20:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:20:49,098 INFO L87 Difference]: Start difference. First operand 435 states and 631 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-28 20:20:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:49,311 INFO L93 Difference]: Finished difference Result 841 states and 1234 transitions. [2023-11-28 20:20:49,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:20:49,312 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), 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 6 [2023-11-28 20:20:49,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:49,318 INFO L225 Difference]: With dead ends: 841 [2023-11-28 20:20:49,319 INFO L226 Difference]: Without dead ends: 839 [2023-11-28 20:20:49,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:20:49,321 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 568 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:49,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1861 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:20:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-11-28 20:20:49,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 441. [2023-11-28 20:20:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 408 states have (on average 1.4901960784313726) internal successors, (608), 422 states have internal predecessors, (608), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-28 20:20:49,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 638 transitions. [2023-11-28 20:20:49,361 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 638 transitions. Word has length 6 [2023-11-28 20:20:49,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:49,361 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 638 transitions. [2023-11-28 20:20:49,361 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), 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) [2023-11-28 20:20:49,361 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 638 transitions. [2023-11-28 20:20:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-28 20:20:49,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:49,364 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:49,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:20:49,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:49,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:49,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1360533943, now seen corresponding path program 1 times [2023-11-28 20:20:49,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:49,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274917792] [2023-11-28 20:20:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:49,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-28 20:20:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 20:20:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:49,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-28 20:20:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:20:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274917792] [2023-11-28 20:20:49,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274917792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:49,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:49,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:20:49,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183996158] [2023-11-28 20:20:49,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:49,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:20:49,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:49,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:20:49,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:20:49,854 INFO L87 Difference]: Start difference. First operand 441 states and 638 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:20:50,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:50,033 INFO L93 Difference]: Finished difference Result 1068 states and 1564 transitions. [2023-11-28 20:20:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:20:50,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-11-28 20:20:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:50,040 INFO L225 Difference]: With dead ends: 1068 [2023-11-28 20:20:50,040 INFO L226 Difference]: Without dead ends: 838 [2023-11-28 20:20:50,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:20:50,043 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 569 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:50,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1892 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:20:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2023-11-28 20:20:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 441. [2023-11-28 20:20:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 408 states have (on average 1.4877450980392157) internal successors, (607), 422 states have internal predecessors, (607), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-28 20:20:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 637 transitions. [2023-11-28 20:20:50,068 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 637 transitions. Word has length 33 [2023-11-28 20:20:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:50,068 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 637 transitions. [2023-11-28 20:20:50,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:20:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 637 transitions. [2023-11-28 20:20:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 20:20:50,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:50,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:20:50,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:50,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 652069050, now seen corresponding path program 1 times [2023-11-28 20:20:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:50,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90668126] [2023-11-28 20:20:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:50,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:50,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183550003] [2023-11-28 20:20:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:50,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:50,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:50,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:20:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:50,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:20:50,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:50,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:50,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:50,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90668126] [2023-11-28 20:20:50,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:50,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183550003] [2023-11-28 20:20:50,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183550003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:50,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:50,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:20:50,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139510788] [2023-11-28 20:20:50,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:50,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:20:50,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:20:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:20:50,382 INFO L87 Difference]: Start difference. First operand 441 states and 637 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-28 20:20:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:50,502 INFO L93 Difference]: Finished difference Result 896 states and 1298 transitions. [2023-11-28 20:20:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:20:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 62 [2023-11-28 20:20:50,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:50,506 INFO L225 Difference]: With dead ends: 896 [2023-11-28 20:20:50,506 INFO L226 Difference]: Without dead ends: 462 [2023-11-28 20:20:50,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:20:50,508 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 9 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:50,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1192 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:20:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-28 20:20:50,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2023-11-28 20:20:50,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 428 states have (on average 1.4649532710280373) internal successors, (627), 442 states have internal predecessors, (627), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-28 20:20:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 657 transitions. [2023-11-28 20:20:50,525 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 657 transitions. Word has length 62 [2023-11-28 20:20:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:50,526 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 657 transitions. [2023-11-28 20:20:50,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-28 20:20:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 657 transitions. [2023-11-28 20:20:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 20:20:50,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:50,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:50,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:20:50,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:50,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:50,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1593510404, now seen corresponding path program 1 times [2023-11-28 20:20:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:50,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837776196] [2023-11-28 20:20:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:50,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:50,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030226259] [2023-11-28 20:20:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:50,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:50,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:50,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:50,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:20:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:50,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:20:50,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:51,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:51,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837776196] [2023-11-28 20:20:51,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:51,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030226259] [2023-11-28 20:20:51,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030226259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:51,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:51,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:20:51,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504793538] [2023-11-28 20:20:51,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:51,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:20:51,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:51,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:20:51,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:20:51,022 INFO L87 Difference]: Start difference. First operand 461 states and 657 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-28 20:20:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:51,131 INFO L93 Difference]: Finished difference Result 902 states and 1294 transitions. [2023-11-28 20:20:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:20:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 62 [2023-11-28 20:20:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:51,135 INFO L225 Difference]: With dead ends: 902 [2023-11-28 20:20:51,135 INFO L226 Difference]: Without dead ends: 448 [2023-11-28 20:20:51,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:20:51,137 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 165 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:51,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1636 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:20:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-28 20:20:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 447. [2023-11-28 20:20:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 414 states have (on average 1.463768115942029) internal successors, (606), 428 states have internal predecessors, (606), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-28 20:20:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 636 transitions. [2023-11-28 20:20:51,154 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 636 transitions. Word has length 62 [2023-11-28 20:20:51,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:51,154 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 636 transitions. [2023-11-28 20:20:51,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-28 20:20:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 636 transitions. [2023-11-28 20:20:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 20:20:51,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:51,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:51,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:20:51,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:51,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:51,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1885403438, now seen corresponding path program 1 times [2023-11-28 20:20:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054024491] [2023-11-28 20:20:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:51,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:51,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464626933] [2023-11-28 20:20:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:51,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:51,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:51,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:51,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:20:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:51,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:20:51,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:51,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:51,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054024491] [2023-11-28 20:20:51,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464626933] [2023-11-28 20:20:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464626933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:51,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:51,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:20:51,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067328005] [2023-11-28 20:20:51,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:51,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:20:51,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:51,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:20:51,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:20:51,760 INFO L87 Difference]: Start difference. First operand 447 states and 636 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-28 20:20:51,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:51,865 INFO L93 Difference]: Finished difference Result 870 states and 1248 transitions. [2023-11-28 20:20:51,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:20:51,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 62 [2023-11-28 20:20:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:51,874 INFO L225 Difference]: With dead ends: 870 [2023-11-28 20:20:51,875 INFO L226 Difference]: Without dead ends: 868 [2023-11-28 20:20:51,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:20:51,876 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 544 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:51,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1915 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:20:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-11-28 20:20:51,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 856. [2023-11-28 20:20:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 808 states have (on average 1.4690594059405941) internal successors, (1187), 824 states have internal predecessors, (1187), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2023-11-28 20:20:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1244 transitions. [2023-11-28 20:20:51,919 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1244 transitions. Word has length 62 [2023-11-28 20:20:51,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:51,920 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1244 transitions. [2023-11-28 20:20:51,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-28 20:20:51,921 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1244 transitions. [2023-11-28 20:20:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-28 20:20:51,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:51,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:51,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 20:20:52,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:52,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:52,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:52,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1682035525, now seen corresponding path program 1 times [2023-11-28 20:20:52,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:52,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976049074] [2023-11-28 20:20:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:52,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:52,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:52,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648761517] [2023-11-28 20:20:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:52,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:52,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:52,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:52,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:20:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:52,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:20:52,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:52,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:52,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:52,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976049074] [2023-11-28 20:20:52,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:52,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648761517] [2023-11-28 20:20:52,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648761517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:52,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:52,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:20:52,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926662777] [2023-11-28 20:20:52,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:52,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:20:52,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:20:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:20:52,531 INFO L87 Difference]: Start difference. First operand 856 states and 1244 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-28 20:20:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:52,621 INFO L93 Difference]: Finished difference Result 1453 states and 2119 transitions. [2023-11-28 20:20:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:20:52,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 63 [2023-11-28 20:20:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:52,630 INFO L225 Difference]: With dead ends: 1453 [2023-11-28 20:20:52,630 INFO L226 Difference]: Without dead ends: 1451 [2023-11-28 20:20:52,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:20:52,632 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 485 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:52,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1828 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:20:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-11-28 20:20:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1443. [2023-11-28 20:20:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1378 states have (on average 1.474600870827286) internal successors, (2032), 1396 states have internal predecessors, (2032), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2023-11-28 20:20:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2117 transitions. [2023-11-28 20:20:52,675 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2117 transitions. Word has length 63 [2023-11-28 20:20:52,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:52,675 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 2117 transitions. [2023-11-28 20:20:52,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-28 20:20:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2117 transitions. [2023-11-28 20:20:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-28 20:20:52,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:52,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:52,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-28 20:20:52,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-28 20:20:52,878 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:52,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash -304228015, now seen corresponding path program 1 times [2023-11-28 20:20:52,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:52,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699264721] [2023-11-28 20:20:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:52,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:52,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:52,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888793080] [2023-11-28 20:20:52,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:52,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:52,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:52,910 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:52,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:20:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:53,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:20:53,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:53,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:53,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699264721] [2023-11-28 20:20:53,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888793080] [2023-11-28 20:20:53,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888793080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:53,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:53,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:20:53,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709880419] [2023-11-28 20:20:53,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:53,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:20:53,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:20:53,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:20:53,328 INFO L87 Difference]: Start difference. First operand 1443 states and 2117 transitions. Second operand has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:20:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:53,374 INFO L93 Difference]: Finished difference Result 1443 states and 2117 transitions. [2023-11-28 20:20:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:20:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-11-28 20:20:53,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:53,385 INFO L225 Difference]: With dead ends: 1443 [2023-11-28 20:20:53,385 INFO L226 Difference]: Without dead ends: 1442 [2023-11-28 20:20:53,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:20:53,386 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 552 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:53,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:20:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2023-11-28 20:20:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1442. [2023-11-28 20:20:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1378 states have (on average 1.4731494920174166) internal successors, (2030), 1395 states have internal predecessors, (2030), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2023-11-28 20:20:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2115 transitions. [2023-11-28 20:20:53,444 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2115 transitions. Word has length 71 [2023-11-28 20:20:53,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:53,445 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 2115 transitions. [2023-11-28 20:20:53,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:20:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2115 transitions. [2023-11-28 20:20:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 20:20:53,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:53,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:53,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 20:20:53,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-28 20:20:53,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:53,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:53,647 INFO L85 PathProgramCache]: Analyzing trace with hash -841133804, now seen corresponding path program 1 times [2023-11-28 20:20:53,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:53,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454287874] [2023-11-28 20:20:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:53,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:53,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:53,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618011783] [2023-11-28 20:20:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:53,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:53,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:53,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:53,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 20:20:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:53,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:20:53,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:54,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:54,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:54,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454287874] [2023-11-28 20:20:54,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:54,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618011783] [2023-11-28 20:20:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618011783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:54,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:54,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:20:54,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618032218] [2023-11-28 20:20:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:54,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:20:54,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:20:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:20:54,036 INFO L87 Difference]: Start difference. First operand 1442 states and 2115 transitions. Second operand has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:20:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:54,102 INFO L93 Difference]: Finished difference Result 1469 states and 2135 transitions. [2023-11-28 20:20:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:20:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-11-28 20:20:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:54,112 INFO L225 Difference]: With dead ends: 1469 [2023-11-28 20:20:54,112 INFO L226 Difference]: Without dead ends: 1468 [2023-11-28 20:20:54,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:20:54,114 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 491 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:54,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1223 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:20:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2023-11-28 20:20:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1459. [2023-11-28 20:20:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1390 states have (on average 1.4697841726618706) internal successors, (2043), 1408 states have internal predecessors, (2043), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2023-11-28 20:20:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2134 transitions. [2023-11-28 20:20:54,174 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2134 transitions. Word has length 72 [2023-11-28 20:20:54,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:54,174 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2134 transitions. [2023-11-28 20:20:54,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:20:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2134 transitions. [2023-11-28 20:20:54,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-28 20:20:54,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:54,176 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:54,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 20:20:54,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:54,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:54,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash 494764585, now seen corresponding path program 1 times [2023-11-28 20:20:54,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530996718] [2023-11-28 20:20:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:54,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:54,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:54,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049380009] [2023-11-28 20:20:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:54,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:54,430 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:54,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 20:20:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:54,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 20:20:54,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:54,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:20:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:55,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530996718] [2023-11-28 20:20:55,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049380009] [2023-11-28 20:20:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049380009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:20:55,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:20:55,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-28 20:20:55,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142484881] [2023-11-28 20:20:55,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:20:55,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:20:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:20:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:20:55,097 INFO L87 Difference]: Start difference. First operand 1459 states and 2134 transitions. Second operand has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 20:20:56,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:56,062 INFO L93 Difference]: Finished difference Result 3583 states and 5230 transitions. [2023-11-28 20:20:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 20:20:56,062 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 79 [2023-11-28 20:20:56,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:56,081 INFO L225 Difference]: With dead ends: 3583 [2023-11-28 20:20:56,081 INFO L226 Difference]: Without dead ends: 3581 [2023-11-28 20:20:56,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2023-11-28 20:20:56,083 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 4355 mSDsluCounter, 5815 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:56,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 6448 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:20:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2023-11-28 20:20:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3288. [2023-11-28 20:20:56,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3147 states have (on average 1.4680648236415634) internal successors, (4620), 3169 states have internal predecessors, (4620), 101 states have call successors, (101), 33 states have call predecessors, (101), 27 states have return successors, (122), 86 states have call predecessors, (122), 101 states have call successors, (122) [2023-11-28 20:20:56,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 4843 transitions. [2023-11-28 20:20:56,186 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 4843 transitions. Word has length 79 [2023-11-28 20:20:56,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:56,187 INFO L495 AbstractCegarLoop]: Abstraction has 3288 states and 4843 transitions. [2023-11-28 20:20:56,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 20:20:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 4843 transitions. [2023-11-28 20:20:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-28 20:20:56,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:56,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:56,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-28 20:20:56,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:56,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:56,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:56,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2092260, now seen corresponding path program 1 times [2023-11-28 20:20:56,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:56,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576009788] [2023-11-28 20:20:56,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:56,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:56,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167155101] [2023-11-28 20:20:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:56,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:56,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:56,436 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:56,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 20:20:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:56,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:20:56,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:56,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576009788] [2023-11-28 20:20:56,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167155101] [2023-11-28 20:20:56,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167155101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:56,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:20:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370711116] [2023-11-28 20:20:56,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:56,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:20:56,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:56,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:20:56,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:20:56,985 INFO L87 Difference]: Start difference. First operand 3288 states and 4843 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2023-11-28 20:20:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:57,226 INFO L93 Difference]: Finished difference Result 7216 states and 10686 transitions. [2023-11-28 20:20:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:20:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2023-11-28 20:20:57,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:57,250 INFO L225 Difference]: With dead ends: 7216 [2023-11-28 20:20:57,250 INFO L226 Difference]: Without dead ends: 3935 [2023-11-28 20:20:57,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:20:57,257 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 390 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:57,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1392 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:20:57,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2023-11-28 20:20:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3717. [2023-11-28 20:20:57,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3717 states, 3575 states have (on average 1.484195804195804) internal successors, (5306), 3595 states have internal predecessors, (5306), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2023-11-28 20:20:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5537 transitions. [2023-11-28 20:20:57,420 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5537 transitions. Word has length 80 [2023-11-28 20:20:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:57,420 INFO L495 AbstractCegarLoop]: Abstraction has 3717 states and 5537 transitions. [2023-11-28 20:20:57,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2023-11-28 20:20:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5537 transitions. [2023-11-28 20:20:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-28 20:20:57,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:57,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:57,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 20:20:57,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:57,623 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:57,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash 279871174, now seen corresponding path program 1 times [2023-11-28 20:20:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:57,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362490979] [2023-11-28 20:20:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:57,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:57,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145471266] [2023-11-28 20:20:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:57,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:57,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:57,675 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:57,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 20:20:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:58,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 20:20:58,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:20:58,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:20:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 20:20:58,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:58,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362490979] [2023-11-28 20:20:58,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:58,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145471266] [2023-11-28 20:20:58,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145471266] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:20:58,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:20:58,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-28 20:20:58,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044658092] [2023-11-28 20:20:58,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:20:58,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:20:58,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:20:58,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:20:58,308 INFO L87 Difference]: Start difference. First operand 3717 states and 5537 transitions. Second operand has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-28 20:20:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:58,770 INFO L93 Difference]: Finished difference Result 6781 states and 10076 transitions. [2023-11-28 20:20:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:20:58,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 88 [2023-11-28 20:20:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:20:58,807 INFO L225 Difference]: With dead ends: 6781 [2023-11-28 20:20:58,807 INFO L226 Difference]: Without dead ends: 6780 [2023-11-28 20:20:58,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:20:58,810 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2731 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2750 SdHoareTripleChecker+Valid, 3353 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:20:58,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2750 Valid, 3353 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:20:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2023-11-28 20:20:59,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 6349. [2023-11-28 20:20:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6349 states, 6102 states have (on average 1.4827925270403146) internal successors, (9048), 6125 states have internal predecessors, (9048), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2023-11-28 20:20:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6349 states to 6349 states and 9449 transitions. [2023-11-28 20:20:59,035 INFO L78 Accepts]: Start accepts. Automaton has 6349 states and 9449 transitions. Word has length 88 [2023-11-28 20:20:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:20:59,035 INFO L495 AbstractCegarLoop]: Abstraction has 6349 states and 9449 transitions. [2023-11-28 20:20:59,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-28 20:20:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6349 states and 9449 transitions. [2023-11-28 20:20:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-28 20:20:59,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:20:59,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:20:59,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 20:20:59,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 20:20:59,238 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:20:59,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:20:59,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1613682208, now seen corresponding path program 1 times [2023-11-28 20:20:59,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:20:59,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100129402] [2023-11-28 20:20:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:20:59,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:20:59,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629332594] [2023-11-28 20:20:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:20:59,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:20:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:20:59,275 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:20:59,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 20:20:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:20:59,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 20:20:59,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:20:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 20:20:59,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:20:59,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:20:59,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100129402] [2023-11-28 20:20:59,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:20:59,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629332594] [2023-11-28 20:20:59,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629332594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:20:59,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:20:59,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:20:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600689146] [2023-11-28 20:20:59,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:20:59,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:20:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:20:59,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:20:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:20:59,708 INFO L87 Difference]: Start difference. First operand 6349 states and 9449 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 20:20:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:20:59,978 INFO L93 Difference]: Finished difference Result 12566 states and 18706 transitions. [2023-11-28 20:20:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:20:59,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2023-11-28 20:20:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:00,008 INFO L225 Difference]: With dead ends: 12566 [2023-11-28 20:21:00,009 INFO L226 Difference]: Without dead ends: 6349 [2023-11-28 20:21:00,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:21:00,018 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 142 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:00,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2893 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:21:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6349 states. [2023-11-28 20:21:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6349 to 6349. [2023-11-28 20:21:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6349 states, 6102 states have (on average 1.4826286463454605) internal successors, (9047), 6124 states have internal predecessors, (9047), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2023-11-28 20:21:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6349 states to 6349 states and 9448 transitions. [2023-11-28 20:21:00,242 INFO L78 Accepts]: Start accepts. Automaton has 6349 states and 9448 transitions. Word has length 112 [2023-11-28 20:21:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:00,242 INFO L495 AbstractCegarLoop]: Abstraction has 6349 states and 9448 transitions. [2023-11-28 20:21:00,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 20:21:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 6349 states and 9448 transitions. [2023-11-28 20:21:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-28 20:21:00,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:00,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:00,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:00,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:00,445 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:00,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:00,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1096075042, now seen corresponding path program 1 times [2023-11-28 20:21:00,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:00,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215305319] [2023-11-28 20:21:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:00,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:00,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:00,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098996037] [2023-11-28 20:21:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:00,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:00,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:00,491 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:00,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 20:21:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:00,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:21:00,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:00,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 20:21:01,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:21:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 20:21:01,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215305319] [2023-11-28 20:21:01,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098996037] [2023-11-28 20:21:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098996037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:01,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:21:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807424171] [2023-11-28 20:21:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:01,128 INFO L87 Difference]: Start difference. First operand 6349 states and 9448 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:21:05,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:21:09,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:21:13,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:21:17,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:21:21,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:21:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:21,580 INFO L93 Difference]: Finished difference Result 8867 states and 13153 transitions. [2023-11-28 20:21:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:21:21,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 117 [2023-11-28 20:21:21,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:21,597 INFO L225 Difference]: With dead ends: 8867 [2023-11-28 20:21:21,598 INFO L226 Difference]: Without dead ends: 8866 [2023-11-28 20:21:21,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:21,600 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 985 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:21,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1486 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2023-11-28 20:21:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2023-11-28 20:21:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 6014. [2023-11-28 20:21:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6014 states, 5752 states have (on average 1.4732267037552156) internal successors, (8474), 5779 states have internal predecessors, (8474), 193 states have call successors, (193), 69 states have call predecessors, (193), 57 states have return successors, (226), 165 states have call predecessors, (226), 193 states have call successors, (226) [2023-11-28 20:21:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6014 states to 6014 states and 8893 transitions. [2023-11-28 20:21:21,888 INFO L78 Accepts]: Start accepts. Automaton has 6014 states and 8893 transitions. Word has length 117 [2023-11-28 20:21:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:21,888 INFO L495 AbstractCegarLoop]: Abstraction has 6014 states and 8893 transitions. [2023-11-28 20:21:21,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:21:21,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6014 states and 8893 transitions. [2023-11-28 20:21:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-28 20:21:21,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:21,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:21,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 20:21:22,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 20:21:22,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:22,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash -381411248, now seen corresponding path program 1 times [2023-11-28 20:21:22,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:22,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477808102] [2023-11-28 20:21:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:22,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:22,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:22,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401607922] [2023-11-28 20:21:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:22,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:22,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:22,125 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:22,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 20:21:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:22,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:21:22,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:22,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:21:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 20:21:22,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:22,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477808102] [2023-11-28 20:21:22,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401607922] [2023-11-28 20:21:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401607922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:22,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:22,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:21:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603132432] [2023-11-28 20:21:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:22,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:22,735 INFO L87 Difference]: Start difference. First operand 6014 states and 8893 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:21:26,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:21:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:27,130 INFO L93 Difference]: Finished difference Result 6283 states and 9256 transitions. [2023-11-28 20:21:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:21:27,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 118 [2023-11-28 20:21:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:27,143 INFO L225 Difference]: With dead ends: 6283 [2023-11-28 20:21:27,143 INFO L226 Difference]: Without dead ends: 6282 [2023-11-28 20:21:27,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:21:27,145 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 981 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:27,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 2045 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 189 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-28 20:21:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2023-11-28 20:21:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6013. [2023-11-28 20:21:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6013 states, 5752 states have (on average 1.4713143254520167) internal successors, (8463), 5778 states have internal predecessors, (8463), 193 states have call successors, (193), 69 states have call predecessors, (193), 57 states have return successors, (226), 165 states have call predecessors, (226), 193 states have call successors, (226) [2023-11-28 20:21:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6013 states to 6013 states and 8882 transitions. [2023-11-28 20:21:27,358 INFO L78 Accepts]: Start accepts. Automaton has 6013 states and 8882 transitions. Word has length 118 [2023-11-28 20:21:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:27,358 INFO L495 AbstractCegarLoop]: Abstraction has 6013 states and 8882 transitions. [2023-11-28 20:21:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:21:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6013 states and 8882 transitions. [2023-11-28 20:21:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-28 20:21:27,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:27,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:27,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 20:21:27,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 20:21:27,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:27,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1823061689, now seen corresponding path program 1 times [2023-11-28 20:21:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:27,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603708502] [2023-11-28 20:21:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:27,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:27,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001973933] [2023-11-28 20:21:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:27,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:27,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:27,597 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:27,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 20:21:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:27,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-28 20:21:27,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:21:28,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:28,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:28,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603708502] [2023-11-28 20:21:28,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:28,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001973933] [2023-11-28 20:21:28,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001973933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:28,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:28,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 20:21:28,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895187823] [2023-11-28 20:21:28,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:28,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:21:28,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:21:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:21:28,051 INFO L87 Difference]: Start difference. First operand 6013 states and 8882 transitions. Second operand has 9 states, 8 states have (on average 14.125) internal successors, (113), 9 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-28 20:21:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:28,386 INFO L93 Difference]: Finished difference Result 10410 states and 15389 transitions. [2023-11-28 20:21:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:21:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.125) internal successors, (113), 9 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 123 [2023-11-28 20:21:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:28,395 INFO L225 Difference]: With dead ends: 10410 [2023-11-28 20:21:28,395 INFO L226 Difference]: Without dead ends: 4518 [2023-11-28 20:21:28,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:21:28,404 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 23 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:28,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4753 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:21:28,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2023-11-28 20:21:28,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4516. [2023-11-28 20:21:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 4315 states have (on average 1.4743916570104287) internal successors, (6362), 4338 states have internal predecessors, (6362), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-28 20:21:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6648 transitions. [2023-11-28 20:21:28,522 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6648 transitions. Word has length 123 [2023-11-28 20:21:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:28,522 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 6648 transitions. [2023-11-28 20:21:28,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.125) internal successors, (113), 9 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-28 20:21:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6648 transitions. [2023-11-28 20:21:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-28 20:21:28,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:28,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:28,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 20:21:28,724 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:28,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:28,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1198226997, now seen corresponding path program 1 times [2023-11-28 20:21:28,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51161610] [2023-11-28 20:21:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:28,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:28,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34759232] [2023-11-28 20:21:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:28,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:28,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:28,771 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:28,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 20:21:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:29,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 144 conjunts are in the unsatisfiable core [2023-11-28 20:21:29,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:29,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 20:21:29,225 INFO L378 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 [2023-11-28 20:21:29,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 20:21:29,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-28 20:21:30,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2023-11-28 20:21:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 20:21:30,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51161610] [2023-11-28 20:21:30,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34759232] [2023-11-28 20:21:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34759232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:30,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:30,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 20:21:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231961085] [2023-11-28 20:21:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:30,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:21:30,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:30,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:21:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:21:30,220 INFO L87 Difference]: Start difference. First operand 4516 states and 6648 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:32,841 INFO L93 Difference]: Finished difference Result 9322 states and 13676 transitions. [2023-11-28 20:21:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:21:32,842 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 125 [2023-11-28 20:21:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:32,850 INFO L225 Difference]: With dead ends: 9322 [2023-11-28 20:21:32,851 INFO L226 Difference]: Without dead ends: 4889 [2023-11-28 20:21:32,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-28 20:21:32,859 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1004 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:32,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 3721 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-28 20:21:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2023-11-28 20:21:32,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 4548. [2023-11-28 20:21:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 4347 states have (on average 1.4720496894409938) internal successors, (6399), 4370 states have internal predecessors, (6399), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-28 20:21:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 6685 transitions. [2023-11-28 20:21:33,010 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 6685 transitions. Word has length 125 [2023-11-28 20:21:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:33,010 INFO L495 AbstractCegarLoop]: Abstraction has 4548 states and 6685 transitions. [2023-11-28 20:21:33,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 6685 transitions. [2023-11-28 20:21:33,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-28 20:21:33,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:33,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:33,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 20:21:33,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 20:21:33,213 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:33,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2065699401, now seen corresponding path program 1 times [2023-11-28 20:21:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:33,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148651501] [2023-11-28 20:21:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:33,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724504070] [2023-11-28 20:21:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:33,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:33,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:33,259 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:33,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 20:21:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:33,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:21:33,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 20:21:33,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:33,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:33,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148651501] [2023-11-28 20:21:33,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:33,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724504070] [2023-11-28 20:21:33,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724504070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:33,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:33,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:21:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520317979] [2023-11-28 20:21:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:33,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:21:33,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:21:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:33,673 INFO L87 Difference]: Start difference. First operand 4548 states and 6685 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:33,901 INFO L93 Difference]: Finished difference Result 9731 states and 14375 transitions. [2023-11-28 20:21:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:21:33,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 125 [2023-11-28 20:21:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:33,914 INFO L225 Difference]: With dead ends: 9731 [2023-11-28 20:21:33,915 INFO L226 Difference]: Without dead ends: 5286 [2023-11-28 20:21:33,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:21:33,920 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 148 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:33,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1780 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:21:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2023-11-28 20:21:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4686. [2023-11-28 20:21:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4485 states have (on average 1.4595317725752508) internal successors, (6546), 4508 states have internal predecessors, (6546), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-28 20:21:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 6832 transitions. [2023-11-28 20:21:34,087 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 6832 transitions. Word has length 125 [2023-11-28 20:21:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:34,088 INFO L495 AbstractCegarLoop]: Abstraction has 4686 states and 6832 transitions. [2023-11-28 20:21:34,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 6832 transitions. [2023-11-28 20:21:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-28 20:21:34,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:34,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:34,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 20:21:34,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 20:21:34,291 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:34,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash 82785463, now seen corresponding path program 1 times [2023-11-28 20:21:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588109563] [2023-11-28 20:21:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:34,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371092822] [2023-11-28 20:21:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:34,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:34,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:34,342 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:34,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 20:21:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:34,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-28 20:21:34,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:34,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 20:21:34,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-28 20:21:34,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-28 20:21:35,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 20:21:35,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 23 [2023-11-28 20:21:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 20:21:35,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:35,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:35,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588109563] [2023-11-28 20:21:35,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:35,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371092822] [2023-11-28 20:21:35,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371092822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:35,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:35,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-28 20:21:35,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774614014] [2023-11-28 20:21:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 20:21:35,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 20:21:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:21:35,553 INFO L87 Difference]: Start difference. First operand 4686 states and 6832 transitions. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 12 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:37,176 INFO L93 Difference]: Finished difference Result 9733 states and 14161 transitions. [2023-11-28 20:21:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 20:21:37,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 12 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 126 [2023-11-28 20:21:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:37,186 INFO L225 Difference]: With dead ends: 9733 [2023-11-28 20:21:37,187 INFO L226 Difference]: Without dead ends: 5166 [2023-11-28 20:21:37,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-11-28 20:21:37,193 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1181 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:37,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 3007 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 20:21:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2023-11-28 20:21:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4739. [2023-11-28 20:21:37,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4739 states, 4538 states have (on average 1.4585720581754076) internal successors, (6619), 4561 states have internal predecessors, (6619), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-28 20:21:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 6905 transitions. [2023-11-28 20:21:37,422 INFO L78 Accepts]: Start accepts. Automaton has 4739 states and 6905 transitions. Word has length 126 [2023-11-28 20:21:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:37,423 INFO L495 AbstractCegarLoop]: Abstraction has 4739 states and 6905 transitions. [2023-11-28 20:21:37,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 12 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4739 states and 6905 transitions. [2023-11-28 20:21:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-28 20:21:37,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:37,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:37,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 20:21:37,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:37,625 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:37,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:37,626 INFO L85 PathProgramCache]: Analyzing trace with hash -604816278, now seen corresponding path program 1 times [2023-11-28 20:21:37,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:37,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146013161] [2023-11-28 20:21:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:37,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:37,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976618682] [2023-11-28 20:21:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:37,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:37,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:37,678 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:37,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 20:21:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:38,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 20:21:38,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 20:21:38,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:38,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146013161] [2023-11-28 20:21:38,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976618682] [2023-11-28 20:21:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976618682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:38,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:38,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:21:38,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70569646] [2023-11-28 20:21:38,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:38,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:21:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:38,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:21:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:21:38,323 INFO L87 Difference]: Start difference. First operand 4739 states and 6905 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:39,051 INFO L93 Difference]: Finished difference Result 9467 states and 13812 transitions. [2023-11-28 20:21:39,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:21:39,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 127 [2023-11-28 20:21:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:39,064 INFO L225 Difference]: With dead ends: 9467 [2023-11-28 20:21:39,064 INFO L226 Difference]: Without dead ends: 4848 [2023-11-28 20:21:39,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:21:39,071 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 17 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:39,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3040 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:21:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4848 states. [2023-11-28 20:21:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4848 to 4803. [2023-11-28 20:21:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 4602 states have (on average 1.4552368535419382) internal successors, (6697), 4625 states have internal predecessors, (6697), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-28 20:21:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 6983 transitions. [2023-11-28 20:21:39,293 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 6983 transitions. Word has length 127 [2023-11-28 20:21:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:39,293 INFO L495 AbstractCegarLoop]: Abstraction has 4803 states and 6983 transitions. [2023-11-28 20:21:39,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:39,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 6983 transitions. [2023-11-28 20:21:39,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-28 20:21:39,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:39,295 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:39,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:39,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:39,495 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:39,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash 261527056, now seen corresponding path program 1 times [2023-11-28 20:21:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:39,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513124877] [2023-11-28 20:21:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:39,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:39,541 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:39,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023777627] [2023-11-28 20:21:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:39,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:39,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:39,543 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:39,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 20:21:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:39,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 20:21:39,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 20:21:40,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:40,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513124877] [2023-11-28 20:21:40,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023777627] [2023-11-28 20:21:40,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023777627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:40,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:40,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:21:40,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172467850] [2023-11-28 20:21:40,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:40,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:21:40,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:40,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:21:40,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:40,095 INFO L87 Difference]: Start difference. First operand 4803 states and 6983 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:40,715 INFO L93 Difference]: Finished difference Result 9507 states and 13838 transitions. [2023-11-28 20:21:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:21:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 127 [2023-11-28 20:21:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:40,722 INFO L225 Difference]: With dead ends: 9507 [2023-11-28 20:21:40,722 INFO L226 Difference]: Without dead ends: 4831 [2023-11-28 20:21:40,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:21:40,728 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 8 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:40,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2532 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:21:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2023-11-28 20:21:40,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 4824. [2023-11-28 20:21:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 4623 states have (on average 1.4531689379191002) internal successors, (6718), 4646 states have internal predecessors, (6718), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-28 20:21:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 7004 transitions. [2023-11-28 20:21:40,889 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 7004 transitions. Word has length 127 [2023-11-28 20:21:40,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:40,889 INFO L495 AbstractCegarLoop]: Abstraction has 4824 states and 7004 transitions. [2023-11-28 20:21:40,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 7004 transitions. [2023-11-28 20:21:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-28 20:21:40,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:40,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:40,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 20:21:41,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-28 20:21:41,091 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:41,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2138590286, now seen corresponding path program 1 times [2023-11-28 20:21:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:41,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953642307] [2023-11-28 20:21:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:41,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:41,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:41,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877871892] [2023-11-28 20:21:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:41,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:41,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:41,145 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:41,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 20:21:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:41,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-28 20:21:41,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:21:41,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:21:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 20:21:41,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:41,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953642307] [2023-11-28 20:21:41,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:41,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877871892] [2023-11-28 20:21:41,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877871892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:21:41,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:21:41,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2023-11-28 20:21:41,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669175561] [2023-11-28 20:21:41,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:21:41,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:21:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:41,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:21:41,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:21:41,957 INFO L87 Difference]: Start difference. First operand 4824 states and 7004 transitions. Second operand has 14 states, 12 states have (on average 11.333333333333334) internal successors, (136), 14 states have internal predecessors, (136), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:21:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:42,766 INFO L93 Difference]: Finished difference Result 9541 states and 13891 transitions. [2023-11-28 20:21:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 20:21:42,769 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 11.333333333333334) internal successors, (136), 14 states have internal predecessors, (136), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 127 [2023-11-28 20:21:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:42,780 INFO L225 Difference]: With dead ends: 9541 [2023-11-28 20:21:42,780 INFO L226 Difference]: Without dead ends: 4896 [2023-11-28 20:21:42,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:21:42,788 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 48 mSDsluCounter, 5351 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 5951 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:42,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 5951 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:21:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2023-11-28 20:21:42,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 4879. [2023-11-28 20:21:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4879 states, 4676 states have (on average 1.4540205303678357) internal successors, (6799), 4695 states have internal predecessors, (6799), 137 states have call successors, (137), 65 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:21:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 7081 transitions. [2023-11-28 20:21:42,959 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 7081 transitions. Word has length 127 [2023-11-28 20:21:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:42,959 INFO L495 AbstractCegarLoop]: Abstraction has 4879 states and 7081 transitions. [2023-11-28 20:21:42,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 11.333333333333334) internal successors, (136), 14 states have internal predecessors, (136), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:21:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 7081 transitions. [2023-11-28 20:21:42,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-28 20:21:42,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:42,961 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:42,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:43,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-28 20:21:43,162 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:43,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1710166350, now seen corresponding path program 2 times [2023-11-28 20:21:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:43,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975952852] [2023-11-28 20:21:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:43,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514437820] [2023-11-28 20:21:43,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:21:43,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:43,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:43,218 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:43,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-28 20:21:43,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:21:43,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:21:43,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:21:43,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:43,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:21:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-28 20:21:43,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:43,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975952852] [2023-11-28 20:21:43,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:43,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514437820] [2023-11-28 20:21:43,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514437820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:43,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:43,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:21:43,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376677314] [2023-11-28 20:21:43,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:43,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:21:43,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:43,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:21:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:43,622 INFO L87 Difference]: Start difference. First operand 4879 states and 7081 transitions. Second operand has 3 states, 2 states have (on average 52.5) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:43,727 INFO L93 Difference]: Finished difference Result 4879 states and 7081 transitions. [2023-11-28 20:21:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:21:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 52.5) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 131 [2023-11-28 20:21:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:43,734 INFO L225 Difference]: With dead ends: 4879 [2023-11-28 20:21:43,734 INFO L226 Difference]: Without dead ends: 4878 [2023-11-28 20:21:43,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:21:43,736 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:43,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1217 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:21:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2023-11-28 20:21:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4878. [2023-11-28 20:21:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4676 states have (on average 1.452737382378101) internal successors, (6793), 4694 states have internal predecessors, (6793), 137 states have call successors, (137), 65 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:21:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 7075 transitions. [2023-11-28 20:21:43,866 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 7075 transitions. Word has length 131 [2023-11-28 20:21:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:43,866 INFO L495 AbstractCegarLoop]: Abstraction has 4878 states and 7075 transitions. [2023-11-28 20:21:43,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 52.5) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 7075 transitions. [2023-11-28 20:21:43,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-28 20:21:43,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:43,867 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:43,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-28 20:21:44,068 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:44,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1475549195, now seen corresponding path program 1 times [2023-11-28 20:21:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:44,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941731042] [2023-11-28 20:21:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:44,113 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312958157] [2023-11-28 20:21:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:44,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:44,114 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:44,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-28 20:21:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:44,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-28 20:21:44,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 20:21:44,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:21:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 20:21:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941731042] [2023-11-28 20:21:45,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312958157] [2023-11-28 20:21:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312958157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:21:45,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:21:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2023-11-28 20:21:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947168099] [2023-11-28 20:21:45,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:21:45,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 20:21:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 20:21:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-28 20:21:45,353 INFO L87 Difference]: Start difference. First operand 4878 states and 7075 transitions. Second operand has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 21 states have internal predecessors, (145), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:21:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:47,185 INFO L93 Difference]: Finished difference Result 9271 states and 13481 transitions. [2023-11-28 20:21:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 20:21:47,186 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 21 states have internal predecessors, (145), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 132 [2023-11-28 20:21:47,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:47,193 INFO L225 Difference]: With dead ends: 9271 [2023-11-28 20:21:47,193 INFO L226 Difference]: Without dead ends: 4429 [2023-11-28 20:21:47,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2023-11-28 20:21:47,200 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 143 mSDsluCounter, 7119 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 7638 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:47,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 7638 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 20:21:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4429 states. [2023-11-28 20:21:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4429 to 4406. [2023-11-28 20:21:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4204 states have (on average 1.441722169362512) internal successors, (6061), 4222 states have internal predecessors, (6061), 137 states have call successors, (137), 65 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:21:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 6343 transitions. [2023-11-28 20:21:47,384 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 6343 transitions. Word has length 132 [2023-11-28 20:21:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:47,385 INFO L495 AbstractCegarLoop]: Abstraction has 4406 states and 6343 transitions. [2023-11-28 20:21:47,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 21 states have internal predecessors, (145), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:21:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 6343 transitions. [2023-11-28 20:21:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-28 20:21:47,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:47,386 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:47,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:47,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-28 20:21:47,587 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:47,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2006076206, now seen corresponding path program 2 times [2023-11-28 20:21:47,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:47,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260550086] [2023-11-28 20:21:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:47,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:47,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:47,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197681979] [2023-11-28 20:21:47,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:21:47,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:47,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:47,630 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:47,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-28 20:21:48,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:21:48,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:21:48,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-28 20:21:48,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 7 proven. 124 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 20:21:48,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:21:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 75 proven. 15 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-28 20:21:49,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:49,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260550086] [2023-11-28 20:21:49,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:49,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197681979] [2023-11-28 20:21:49,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197681979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:21:49,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:21:49,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 24 [2023-11-28 20:21:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614531200] [2023-11-28 20:21:49,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:21:49,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:21:49,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:21:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:21:49,108 INFO L87 Difference]: Start difference. First operand 4406 states and 6343 transitions. Second operand has 24 states, 22 states have (on average 6.363636363636363) internal successors, (140), 24 states have internal predecessors, (140), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-28 20:21:52,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:52,030 INFO L93 Difference]: Finished difference Result 8773 states and 12704 transitions. [2023-11-28 20:21:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-28 20:21:52,030 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 6.363636363636363) internal successors, (140), 24 states have internal predecessors, (140), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 141 [2023-11-28 20:21:52,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:52,036 INFO L225 Difference]: With dead ends: 8773 [2023-11-28 20:21:52,036 INFO L226 Difference]: Without dead ends: 4500 [2023-11-28 20:21:52,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=584, Invalid=2386, Unknown=0, NotChecked=0, Total=2970 [2023-11-28 20:21:52,042 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 104 mSDsluCounter, 7365 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 7895 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:52,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 7895 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:21:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2023-11-28 20:21:52,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 4468. [2023-11-28 20:21:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4266 states have (on average 1.4374120956399437) internal successors, (6132), 4282 states have internal predecessors, (6132), 137 states have call successors, (137), 67 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:21:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 6414 transitions. [2023-11-28 20:21:52,212 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 6414 transitions. Word has length 141 [2023-11-28 20:21:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:52,212 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 6414 transitions. [2023-11-28 20:21:52,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 6.363636363636363) internal successors, (140), 24 states have internal predecessors, (140), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-28 20:21:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 6414 transitions. [2023-11-28 20:21:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-28 20:21:52,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:52,213 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:52,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-28 20:21:52,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-28 20:21:52,414 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:52,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1088815989, now seen corresponding path program 3 times [2023-11-28 20:21:52,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:52,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899394678] [2023-11-28 20:21:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:52,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:52,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652781963] [2023-11-28 20:21:52,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:21:52,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:52,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:52,486 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:52,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-28 20:21:53,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 20:21:53,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:21:53,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-28 20:21:53,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-28 20:21:53,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:53,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:53,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899394678] [2023-11-28 20:21:53,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:53,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652781963] [2023-11-28 20:21:53,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652781963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:53,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:53,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:21:53,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036842678] [2023-11-28 20:21:53,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:21:53,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:21:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:21:53,861 INFO L87 Difference]: Start difference. First operand 4468 states and 6414 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:54,721 INFO L93 Difference]: Finished difference Result 8912 states and 12816 transitions. [2023-11-28 20:21:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:21:54,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 148 [2023-11-28 20:21:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:54,730 INFO L225 Difference]: With dead ends: 8912 [2023-11-28 20:21:54,730 INFO L226 Difference]: Without dead ends: 4503 [2023-11-28 20:21:54,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:21:54,736 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 16 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:54,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2880 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:21:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2023-11-28 20:21:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 4468. [2023-11-28 20:21:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4266 states have (on average 1.4374120956399437) internal successors, (6132), 4282 states have internal predecessors, (6132), 137 states have call successors, (137), 67 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:21:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 6414 transitions. [2023-11-28 20:21:54,988 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 6414 transitions. Word has length 148 [2023-11-28 20:21:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:54,988 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 6414 transitions. [2023-11-28 20:21:54,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 6414 transitions. [2023-11-28 20:21:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-28 20:21:54,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:54,990 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:55,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-28 20:21:55,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-28 20:21:55,190 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:55,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 593024283, now seen corresponding path program 1 times [2023-11-28 20:21:55,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:55,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734429354] [2023-11-28 20:21:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:55,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:55,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:55,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770029408] [2023-11-28 20:21:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:55,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:55,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:55,263 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:55,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-28 20:21:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:55,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 20:21:55,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-28 20:21:55,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:21:55,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734429354] [2023-11-28 20:21:55,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770029408] [2023-11-28 20:21:55,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770029408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:21:56,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:21:56,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:21:56,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501639335] [2023-11-28 20:21:56,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:21:56,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:21:56,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:56,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:21:56,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:21:56,001 INFO L87 Difference]: Start difference. First operand 4468 states and 6414 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:56,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:21:56,446 INFO L93 Difference]: Finished difference Result 8922 states and 12823 transitions. [2023-11-28 20:21:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:21:56,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 149 [2023-11-28 20:21:56,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:21:56,453 INFO L225 Difference]: With dead ends: 8922 [2023-11-28 20:21:56,453 INFO L226 Difference]: Without dead ends: 4517 [2023-11-28 20:21:56,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:21:56,458 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 45 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:21:56,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2891 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:21:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2023-11-28 20:21:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4482. [2023-11-28 20:21:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4280 states have (on average 1.435981308411215) internal successors, (6146), 4296 states have internal predecessors, (6146), 137 states have call successors, (137), 67 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:21:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6428 transitions. [2023-11-28 20:21:56,608 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6428 transitions. Word has length 149 [2023-11-28 20:21:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:21:56,608 INFO L495 AbstractCegarLoop]: Abstraction has 4482 states and 6428 transitions. [2023-11-28 20:21:56,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:21:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6428 transitions. [2023-11-28 20:21:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-28 20:21:56,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:21:56,610 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:21:56,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-28 20:21:56,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-28 20:21:56,810 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:21:56,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:21:56,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2065978080, now seen corresponding path program 1 times [2023-11-28 20:21:56,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:21:56,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294888584] [2023-11-28 20:21:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:56,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:21:56,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:21:56,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997971016] [2023-11-28 20:21:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:21:56,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:21:56,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:21:56,878 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:21:56,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-28 20:21:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:21:58,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-28 20:21:58,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:21:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 159 proven. 55 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-28 20:21:58,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:21:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 201 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-28 20:21:59,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:21:59,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294888584] [2023-11-28 20:21:59,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:21:59,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997971016] [2023-11-28 20:21:59,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997971016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:21:59,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:21:59,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2023-11-28 20:21:59,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764436317] [2023-11-28 20:21:59,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:21:59,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-28 20:21:59,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:21:59,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-28 20:21:59,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2023-11-28 20:21:59,403 INFO L87 Difference]: Start difference. First operand 4482 states and 6428 transitions. Second operand has 32 states, 30 states have (on average 5.233333333333333) internal successors, (157), 32 states have internal predecessors, (157), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:22:13,578 WARN L293 SmtUtils]: Spent 10.78s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:22:30,996 WARN L293 SmtUtils]: Spent 14.71s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:22:40,068 WARN L293 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:22:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:22:48,642 INFO L93 Difference]: Finished difference Result 8977 states and 12954 transitions. [2023-11-28 20:22:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-28 20:22:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 5.233333333333333) internal successors, (157), 32 states have internal predecessors, (157), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 150 [2023-11-28 20:22:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:22:48,651 INFO L225 Difference]: With dead ends: 8977 [2023-11-28 20:22:48,651 INFO L226 Difference]: Without dead ends: 4601 [2023-11-28 20:22:48,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 47.4s TimeCoverageRelationStatistics Valid=1064, Invalid=3628, Unknown=0, NotChecked=0, Total=4692 [2023-11-28 20:22:48,659 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 100 mSDsluCounter, 10006 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 10537 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:22:48,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 10537 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-28 20:22:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2023-11-28 20:22:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4578. [2023-11-28 20:22:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4376 states have (on average 1.426416819012797) internal successors, (6242), 4392 states have internal predecessors, (6242), 137 states have call successors, (137), 67 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:22:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6524 transitions. [2023-11-28 20:22:48,881 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6524 transitions. Word has length 150 [2023-11-28 20:22:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:22:48,881 INFO L495 AbstractCegarLoop]: Abstraction has 4578 states and 6524 transitions. [2023-11-28 20:22:48,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 5.233333333333333) internal successors, (157), 32 states have internal predecessors, (157), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:22:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6524 transitions. [2023-11-28 20:22:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-28 20:22:48,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:22:48,882 INFO L195 NwaCegarLoop]: trace histogram [34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:22:48,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-28 20:22:49,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-28 20:22:49,083 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:22:49,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:22:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash -177970656, now seen corresponding path program 2 times [2023-11-28 20:22:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:22:49,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407726900] [2023-11-28 20:22:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:22:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:22:49,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:22:49,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742530970] [2023-11-28 20:22:49,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:22:49,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:22:49,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:22:49,149 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:22:49,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-28 20:22:51,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:22:51,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:22:51,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-28 20:22:51,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:22:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 6 proven. 576 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-28 20:22:51,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:22:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 308 proven. 78 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-28 20:22:53,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:22:53,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407726900] [2023-11-28 20:22:53,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:22:53,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742530970] [2023-11-28 20:22:53,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742530970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:22:53,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:22:53,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 37 [2023-11-28 20:22:53,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861109037] [2023-11-28 20:22:53,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:22:53,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-28 20:22:53,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:22:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-28 20:22:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2023-11-28 20:22:53,043 INFO L87 Difference]: Start difference. First operand 4578 states and 6524 transitions. Second operand has 37 states, 35 states have (on average 4.428571428571429) internal successors, (155), 37 states have internal predecessors, (155), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-28 20:23:37,184 WARN L293 SmtUtils]: Spent 29.93s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:24:06,732 WARN L293 SmtUtils]: Spent 21.81s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:24:29,422 WARN L293 SmtUtils]: Spent 13.48s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:24:39,853 WARN L293 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:24:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:57,322 INFO L93 Difference]: Finished difference Result 9143 states and 13143 transitions. [2023-11-28 20:24:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-28 20:24:57,323 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.428571428571429) internal successors, (155), 37 states have internal predecessors, (155), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 162 [2023-11-28 20:24:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:57,330 INFO L225 Difference]: With dead ends: 9143 [2023-11-28 20:24:57,330 INFO L226 Difference]: Without dead ends: 4724 [2023-11-28 20:24:57,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 123.0s TimeCoverageRelationStatistics Valid=1771, Invalid=7159, Unknown=0, NotChecked=0, Total=8930 [2023-11-28 20:24:57,336 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 194 mSDsluCounter, 10010 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 10540 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:57,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 10540 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-28 20:24:57,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2023-11-28 20:24:57,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 4650. [2023-11-28 20:24:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4650 states, 4448 states have (on average 1.4258093525179856) internal successors, (6342), 4464 states have internal predecessors, (6342), 137 states have call successors, (137), 67 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:24:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4650 states to 4650 states and 6624 transitions. [2023-11-28 20:24:57,672 INFO L78 Accepts]: Start accepts. Automaton has 4650 states and 6624 transitions. Word has length 162 [2023-11-28 20:24:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:57,672 INFO L495 AbstractCegarLoop]: Abstraction has 4650 states and 6624 transitions. [2023-11-28 20:24:57,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.428571428571429) internal successors, (155), 37 states have internal predecessors, (155), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-28 20:24:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4650 states and 6624 transitions. [2023-11-28 20:24:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-28 20:24:57,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:57,674 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:57,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-28 20:24:57,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-28 20:24:57,875 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:24:57,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:57,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1053082816, now seen corresponding path program 3 times [2023-11-28 20:24:57,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:57,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618379198] [2023-11-28 20:24:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:57,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:24:57,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535430663] [2023-11-28 20:24:57,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:24:57,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:24:57,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:57,969 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:24:57,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-28 20:24:58,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 20:24:58,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:24:58,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 20:24:58,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:24:58,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 20:24:59,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:24:59,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 29 treesize of output 13 [2023-11-28 20:24:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1235 trivial. 0 not checked. [2023-11-28 20:24:59,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:24:59,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618379198] [2023-11-28 20:24:59,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:24:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535430663] [2023-11-28 20:24:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535430663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:24:59,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:24:59,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-28 20:24:59,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861886049] [2023-11-28 20:24:59,612 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:24:59,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:24:59,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:59,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:24:59,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:24:59,613 INFO L87 Difference]: Start difference. First operand 4650 states and 6624 transitions. Second operand has 9 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:04,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:25:08,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:25:12,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:25:16,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:25:20,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:25:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:20,617 INFO L93 Difference]: Finished difference Result 4984 states and 7072 transitions. [2023-11-28 20:25:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:25:20,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 176 [2023-11-28 20:25:20,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:20,627 INFO L225 Difference]: With dead ends: 4984 [2023-11-28 20:25:20,627 INFO L226 Difference]: Without dead ends: 4983 [2023-11-28 20:25:20,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 185 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:25:20,629 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1002 mSDsluCounter, 3293 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 12 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 3979 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:20,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 3979 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 440 Invalid, 5 Unknown, 0 Unchecked, 20.6s Time] [2023-11-28 20:25:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4983 states. [2023-11-28 20:25:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4983 to 4649. [2023-11-28 20:25:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4448 states have (on average 1.4244604316546763) internal successors, (6336), 4463 states have internal predecessors, (6336), 137 states have call successors, (137), 67 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-28 20:25:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 6618 transitions. [2023-11-28 20:25:21,005 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 6618 transitions. Word has length 176 [2023-11-28 20:25:21,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:21,006 INFO L495 AbstractCegarLoop]: Abstraction has 4649 states and 6618 transitions. [2023-11-28 20:25:21,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 6618 transitions. [2023-11-28 20:25:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 20:25:21,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:21,008 INFO L195 NwaCegarLoop]: trace histogram [48, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:21,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-28 20:25:21,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:21,208 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:21,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:21,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2038131613, now seen corresponding path program 1 times [2023-11-28 20:25:21,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:21,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624462230] [2023-11-28 20:25:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:21,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559277439] [2023-11-28 20:25:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:21,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:21,289 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:21,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-28 20:25:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:22,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 20:25:22,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 643 proven. 4 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-11-28 20:25:22,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1253 trivial. 0 not checked. [2023-11-28 20:25:22,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:22,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624462230] [2023-11-28 20:25:22,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559277439] [2023-11-28 20:25:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559277439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:22,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:22,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-28 20:25:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568428475] [2023-11-28 20:25:22,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:22,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 20:25:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 20:25:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:25:22,735 INFO L87 Difference]: Start difference. First operand 4649 states and 6618 transitions. Second operand has 15 states, 14 states have (on average 14.571428571428571) internal successors, (204), 14 states have internal predecessors, (204), 5 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-28 20:25:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:23,656 INFO L93 Difference]: Finished difference Result 8708 states and 12634 transitions. [2023-11-28 20:25:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 20:25:23,656 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 14.571428571428571) internal successors, (204), 14 states have internal predecessors, (204), 5 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 210 [2023-11-28 20:25:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:23,666 INFO L225 Difference]: With dead ends: 8708 [2023-11-28 20:25:23,667 INFO L226 Difference]: Without dead ends: 8707 [2023-11-28 20:25:23,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 409 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2023-11-28 20:25:23,669 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 4126 mSDsluCounter, 3916 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:23,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4134 Valid, 4542 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:25:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2023-11-28 20:25:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 8072. [2023-11-28 20:25:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8072 states, 7747 states have (on average 1.4461081709048664) internal successors, (11203), 7770 states have internal predecessors, (11203), 233 states have call successors, (233), 96 states have call predecessors, (233), 83 states have return successors, (241), 205 states have call predecessors, (241), 233 states have call successors, (241) [2023-11-28 20:25:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 11677 transitions. [2023-11-28 20:25:24,046 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 11677 transitions. Word has length 210 [2023-11-28 20:25:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:24,047 INFO L495 AbstractCegarLoop]: Abstraction has 8072 states and 11677 transitions. [2023-11-28 20:25:24,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 14.571428571428571) internal successors, (204), 14 states have internal predecessors, (204), 5 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-28 20:25:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 11677 transitions. [2023-11-28 20:25:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-28 20:25:24,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:24,050 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:24,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-28 20:25:24,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-28 20:25:24,251 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:24,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:24,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1272505114, now seen corresponding path program 1 times [2023-11-28 20:25:24,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:24,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874602825] [2023-11-28 20:25:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:24,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:24,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:24,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90749165] [2023-11-28 20:25:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:24,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:24,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:24,357 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:24,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-28 20:25:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:25,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:25:25,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-28 20:25:25,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:25,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874602825] [2023-11-28 20:25:25,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90749165] [2023-11-28 20:25:25,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90749165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:25,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:25,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:25:25,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960606302] [2023-11-28 20:25:25,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:25,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:25,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:25,562 INFO L87 Difference]: Start difference. First operand 8072 states and 11677 transitions. Second operand has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:25,928 INFO L93 Difference]: Finished difference Result 8072 states and 11677 transitions. [2023-11-28 20:25:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 238 [2023-11-28 20:25:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:25,941 INFO L225 Difference]: With dead ends: 8072 [2023-11-28 20:25:25,941 INFO L226 Difference]: Without dead ends: 8071 [2023-11-28 20:25:25,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:25,945 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 368 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:25,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 539 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2023-11-28 20:25:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 8071. [2023-11-28 20:25:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8071 states, 7747 states have (on average 1.4436556086226926) internal successors, (11184), 7769 states have internal predecessors, (11184), 233 states have call successors, (233), 96 states have call predecessors, (233), 83 states have return successors, (241), 205 states have call predecessors, (241), 233 states have call successors, (241) [2023-11-28 20:25:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8071 states to 8071 states and 11658 transitions. [2023-11-28 20:25:26,372 INFO L78 Accepts]: Start accepts. Automaton has 8071 states and 11658 transitions. Word has length 238 [2023-11-28 20:25:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:26,373 INFO L495 AbstractCegarLoop]: Abstraction has 8071 states and 11658 transitions. [2023-11-28 20:25:26,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8071 states and 11658 transitions. [2023-11-28 20:25:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-28 20:25:26,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:26,376 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:26,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:26,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:26,577 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:26,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 792954224, now seen corresponding path program 1 times [2023-11-28 20:25:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:26,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170790434] [2023-11-28 20:25:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:26,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:26,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923990299] [2023-11-28 20:25:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:26,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:26,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:26,655 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:26,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-28 20:25:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:27,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 1670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:25:27,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-28 20:25:27,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170790434] [2023-11-28 20:25:27,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:27,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923990299] [2023-11-28 20:25:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923990299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:27,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:27,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:25:27,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748464263] [2023-11-28 20:25:27,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:27,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:27,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:27,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:27,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:27,932 INFO L87 Difference]: Start difference. First operand 8071 states and 11658 transitions. Second operand has 3 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:28,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:28,393 INFO L93 Difference]: Finished difference Result 13070 states and 19133 transitions. [2023-11-28 20:25:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 239 [2023-11-28 20:25:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:28,416 INFO L225 Difference]: With dead ends: 13070 [2023-11-28 20:25:28,416 INFO L226 Difference]: Without dead ends: 13069 [2023-11-28 20:25:28,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:28,421 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 364 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:28,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 864 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13069 states. [2023-11-28 20:25:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13069 to 13065. [2023-11-28 20:25:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13065 states, 12571 states have (on average 1.4611407207063878) internal successors, (18368), 12606 states have internal predecessors, (18368), 369 states have call successors, (369), 133 states have call predecessors, (369), 117 states have return successors, (377), 325 states have call predecessors, (377), 369 states have call successors, (377) [2023-11-28 20:25:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13065 states to 13065 states and 19114 transitions. [2023-11-28 20:25:29,015 INFO L78 Accepts]: Start accepts. Automaton has 13065 states and 19114 transitions. Word has length 239 [2023-11-28 20:25:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:29,016 INFO L495 AbstractCegarLoop]: Abstraction has 13065 states and 19114 transitions. [2023-11-28 20:25:29,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:29,016 INFO L276 IsEmpty]: Start isEmpty. Operand 13065 states and 19114 transitions. [2023-11-28 20:25:29,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-28 20:25:29,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:29,019 INFO L195 NwaCegarLoop]: trace histogram [48, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:29,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-28 20:25:29,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:29,220 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:29,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1262194205, now seen corresponding path program 1 times [2023-11-28 20:25:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638910096] [2023-11-28 20:25:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:29,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:29,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:29,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070495036] [2023-11-28 20:25:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:29,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:29,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:29,322 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:29,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-28 20:25:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:30,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-28 20:25:30,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 643 proven. 33 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2023-11-28 20:25:30,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 1253 trivial. 0 not checked. [2023-11-28 20:25:31,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:31,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638910096] [2023-11-28 20:25:31,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:31,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070495036] [2023-11-28 20:25:31,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070495036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:31,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:31,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 25 [2023-11-28 20:25:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562937440] [2023-11-28 20:25:31,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:31,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 20:25:31,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:31,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 20:25:31,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2023-11-28 20:25:31,230 INFO L87 Difference]: Start difference. First operand 13065 states and 19114 transitions. Second operand has 26 states, 25 states have (on average 10.44) internal successors, (261), 26 states have internal predecessors, (261), 11 states have call successors, (25), 10 states have call predecessors, (25), 11 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2023-11-28 20:25:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:33,685 INFO L93 Difference]: Finished difference Result 25077 states and 36993 transitions. [2023-11-28 20:25:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-28 20:25:33,686 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 10.44) internal successors, (261), 26 states have internal predecessors, (261), 11 states have call successors, (25), 10 states have call predecessors, (25), 11 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 252 [2023-11-28 20:25:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:33,726 INFO L225 Difference]: With dead ends: 25077 [2023-11-28 20:25:33,726 INFO L226 Difference]: Without dead ends: 25076 [2023-11-28 20:25:33,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=939, Invalid=1713, Unknown=0, NotChecked=0, Total=2652 [2023-11-28 20:25:33,732 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 11660 mSDsluCounter, 7684 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11686 SdHoareTripleChecker+Valid, 8309 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:33,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11686 Valid, 8309 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 20:25:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25076 states. [2023-11-28 20:25:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25076 to 25032. [2023-11-28 20:25:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25032 states, 24112 states have (on average 1.472088586595886) internal successors, (35495), 24147 states have internal predecessors, (35495), 705 states have call successors, (705), 223 states have call predecessors, (705), 207 states have return successors, (713), 661 states have call predecessors, (713), 705 states have call successors, (713) [2023-11-28 20:25:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25032 states to 25032 states and 36913 transitions. [2023-11-28 20:25:34,685 INFO L78 Accepts]: Start accepts. Automaton has 25032 states and 36913 transitions. Word has length 252 [2023-11-28 20:25:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:34,685 INFO L495 AbstractCegarLoop]: Abstraction has 25032 states and 36913 transitions. [2023-11-28 20:25:34,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 10.44) internal successors, (261), 26 states have internal predecessors, (261), 11 states have call successors, (25), 10 states have call predecessors, (25), 11 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2023-11-28 20:25:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 25032 states and 36913 transitions. [2023-11-28 20:25:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-28 20:25:34,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:34,688 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:34,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-28 20:25:34,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:34,889 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:34,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash 707539926, now seen corresponding path program 1 times [2023-11-28 20:25:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397478406] [2023-11-28 20:25:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:35,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:35,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756321942] [2023-11-28 20:25:35,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:35,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:35,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:35,021 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:35,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-28 20:25:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:36,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:25:36,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2023-11-28 20:25:36,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:36,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:36,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397478406] [2023-11-28 20:25:36,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:36,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756321942] [2023-11-28 20:25:36,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756321942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:36,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:36,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:36,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932564854] [2023-11-28 20:25:36,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:36,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:36,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:36,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:36,022 INFO L87 Difference]: Start difference. First operand 25032 states and 36913 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:36,781 INFO L93 Difference]: Finished difference Result 49207 states and 73093 transitions. [2023-11-28 20:25:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 247 [2023-11-28 20:25:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:36,849 INFO L225 Difference]: With dead ends: 49207 [2023-11-28 20:25:36,849 INFO L226 Difference]: Without dead ends: 27510 [2023-11-28 20:25:36,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:36,859 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 9 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:36,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1030 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27510 states. [2023-11-28 20:25:37,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27510 to 27392. [2023-11-28 20:25:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27392 states, 26472 states have (on average 1.4300015110305229) internal successors, (37855), 26507 states have internal predecessors, (37855), 705 states have call successors, (705), 223 states have call predecessors, (705), 207 states have return successors, (713), 661 states have call predecessors, (713), 705 states have call successors, (713) [2023-11-28 20:25:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27392 states to 27392 states and 39273 transitions. [2023-11-28 20:25:37,716 INFO L78 Accepts]: Start accepts. Automaton has 27392 states and 39273 transitions. Word has length 247 [2023-11-28 20:25:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:37,717 INFO L495 AbstractCegarLoop]: Abstraction has 27392 states and 39273 transitions. [2023-11-28 20:25:37,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 27392 states and 39273 transitions. [2023-11-28 20:25:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-28 20:25:37,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:37,720 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:37,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-28 20:25:37,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:37,921 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:37,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash 146840148, now seen corresponding path program 1 times [2023-11-28 20:25:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182306523] [2023-11-28 20:25:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:38,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:38,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983641964] [2023-11-28 20:25:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:38,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:38,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:38,022 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:38,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-28 20:25:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:39,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:25:39,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2023-11-28 20:25:39,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182306523] [2023-11-28 20:25:39,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983641964] [2023-11-28 20:25:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983641964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:39,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:39,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171008025] [2023-11-28 20:25:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:39,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:39,201 INFO L87 Difference]: Start difference. First operand 27392 states and 39273 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:40,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:40,213 INFO L93 Difference]: Finished difference Result 49807 states and 72459 transitions. [2023-11-28 20:25:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:25:40,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 247 [2023-11-28 20:25:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:40,273 INFO L225 Difference]: With dead ends: 49807 [2023-11-28 20:25:40,273 INFO L226 Difference]: Without dead ends: 25858 [2023-11-28 20:25:40,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:40,298 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 165 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:40,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1393 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25858 states. [2023-11-28 20:25:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25858 to 25740. [2023-11-28 20:25:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25740 states, 24820 states have (on average 1.4253424657534246) internal successors, (35377), 24855 states have internal predecessors, (35377), 705 states have call successors, (705), 223 states have call predecessors, (705), 207 states have return successors, (713), 661 states have call predecessors, (713), 705 states have call successors, (713) [2023-11-28 20:25:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25740 states to 25740 states and 36795 transitions. [2023-11-28 20:25:41,467 INFO L78 Accepts]: Start accepts. Automaton has 25740 states and 36795 transitions. Word has length 247 [2023-11-28 20:25:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:41,468 INFO L495 AbstractCegarLoop]: Abstraction has 25740 states and 36795 transitions. [2023-11-28 20:25:41,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 25740 states and 36795 transitions. [2023-11-28 20:25:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-28 20:25:41,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:41,472 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:41,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-28 20:25:41,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:41,674 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:41,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1997087074, now seen corresponding path program 1 times [2023-11-28 20:25:41,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:41,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400882184] [2023-11-28 20:25:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:41,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:41,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862557744] [2023-11-28 20:25:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:41,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:41,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:41,807 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:41,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-28 20:25:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:43,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:25:43,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-28 20:25:43,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-28 20:25:43,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:43,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400882184] [2023-11-28 20:25:43,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:43,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862557744] [2023-11-28 20:25:43,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862557744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:43,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:43,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 5 [2023-11-28 20:25:43,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828886333] [2023-11-28 20:25:43,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:43,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:43,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:43,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:43,909 INFO L87 Difference]: Start difference. First operand 25740 states and 36795 transitions. Second operand has 6 states, 5 states have (on average 72.4) internal successors, (362), 6 states have internal predecessors, (362), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:25:46,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:46,055 INFO L93 Difference]: Finished difference Result 58643 states and 84474 transitions. [2023-11-28 20:25:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:25:46,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 72.4) internal successors, (362), 6 states have internal predecessors, (362), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 247 [2023-11-28 20:25:46,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:46,153 INFO L225 Difference]: With dead ends: 58643 [2023-11-28 20:25:46,153 INFO L226 Difference]: Without dead ends: 58642 [2023-11-28 20:25:46,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:46,161 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 2299 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2299 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:46,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2299 Valid, 1762 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:25:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58642 states. [2023-11-28 20:25:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58642 to 58626. [2023-11-28 20:25:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58626 states, 56647 states have (on average 1.4341094850565785) internal successors, (81238), 56721 states have internal predecessors, (81238), 1563 states have call successors, (1563), 433 states have call predecessors, (1563), 408 states have return successors, (1571), 1471 states have call predecessors, (1571), 1563 states have call successors, (1571) [2023-11-28 20:25:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58626 states to 58626 states and 84372 transitions. [2023-11-28 20:25:48,251 INFO L78 Accepts]: Start accepts. Automaton has 58626 states and 84372 transitions. Word has length 247 [2023-11-28 20:25:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:48,251 INFO L495 AbstractCegarLoop]: Abstraction has 58626 states and 84372 transitions. [2023-11-28 20:25:48,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 72.4) internal successors, (362), 6 states have internal predecessors, (362), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:25:48,251 INFO L276 IsEmpty]: Start isEmpty. Operand 58626 states and 84372 transitions. [2023-11-28 20:25:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-28 20:25:48,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:48,255 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:48,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-28 20:25:48,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-28 20:25:48,456 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:48,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 899564368, now seen corresponding path program 1 times [2023-11-28 20:25:48,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:48,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836247167] [2023-11-28 20:25:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:48,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:48,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:48,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337133499] [2023-11-28 20:25:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:48,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:48,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:48,574 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:48,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-28 20:25:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:49,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:49,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2023-11-28 20:25:49,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:49,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:49,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836247167] [2023-11-28 20:25:49,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:49,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337133499] [2023-11-28 20:25:49,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337133499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:49,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:49,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:49,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359522082] [2023-11-28 20:25:49,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:49,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:49,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:49,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:49,777 INFO L87 Difference]: Start difference. First operand 58626 states and 84372 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:25:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:50,816 INFO L93 Difference]: Finished difference Result 70922 states and 101284 transitions. [2023-11-28 20:25:50,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:50,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 255 [2023-11-28 20:25:50,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:50,849 INFO L225 Difference]: With dead ends: 70922 [2023-11-28 20:25:50,849 INFO L226 Difference]: Without dead ends: 13289 [2023-11-28 20:25:50,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:50,890 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 14 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:50,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1045 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13289 states. [2023-11-28 20:25:51,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13289 to 8510. [2023-11-28 20:25:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8510 states, 8160 states have (on average 1.364828431372549) internal successors, (11137), 8185 states have internal predecessors, (11137), 219 states have call successors, (219), 133 states have call predecessors, (219), 123 states have return successors, (227), 191 states have call predecessors, (227), 219 states have call successors, (227) [2023-11-28 20:25:51,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8510 states to 8510 states and 11583 transitions. [2023-11-28 20:25:51,564 INFO L78 Accepts]: Start accepts. Automaton has 8510 states and 11583 transitions. Word has length 255 [2023-11-28 20:25:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:51,565 INFO L495 AbstractCegarLoop]: Abstraction has 8510 states and 11583 transitions. [2023-11-28 20:25:51,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:25:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8510 states and 11583 transitions. [2023-11-28 20:25:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-28 20:25:51,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:51,568 INFO L195 NwaCegarLoop]: trace histogram [48, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:51,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-28 20:25:51,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-28 20:25:51,769 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:51,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:51,769 INFO L85 PathProgramCache]: Analyzing trace with hash -500172023, now seen corresponding path program 1 times [2023-11-28 20:25:51,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110720556] [2023-11-28 20:25:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:51,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:51,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:51,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732994702] [2023-11-28 20:25:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:51,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:51,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:51,892 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:51,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-28 20:25:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:53,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 20:25:53,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 754 proven. 8 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-28 20:25:53,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 75 proven. 10 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2023-11-28 20:25:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110720556] [2023-11-28 20:25:53,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732994702] [2023-11-28 20:25:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732994702] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:53,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:53,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2023-11-28 20:25:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088979782] [2023-11-28 20:25:53,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:53,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 20:25:53,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:53,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 20:25:53,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-28 20:25:53,954 INFO L87 Difference]: Start difference. First operand 8510 states and 11583 transitions. Second operand has 22 states, 21 states have (on average 15.904761904761905) internal successors, (334), 20 states have internal predecessors, (334), 7 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-28 20:25:55,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:55,316 INFO L93 Difference]: Finished difference Result 14154 states and 19376 transitions. [2023-11-28 20:25:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 20:25:55,316 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.904761904761905) internal successors, (334), 20 states have internal predecessors, (334), 7 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 270 [2023-11-28 20:25:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:55,328 INFO L225 Difference]: With dead ends: 14154 [2023-11-28 20:25:55,328 INFO L226 Difference]: Without dead ends: 7966 [2023-11-28 20:25:55,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=438, Invalid=968, Unknown=0, NotChecked=0, Total=1406 [2023-11-28 20:25:55,334 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 1656 mSDsluCounter, 4193 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 5257 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:55,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 5257 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:25:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7966 states. [2023-11-28 20:25:55,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7966 to 7863. [2023-11-28 20:25:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7863 states, 7561 states have (on average 1.3713794471630736) internal successors, (10369), 7581 states have internal predecessors, (10369), 189 states have call successors, (189), 115 states have call predecessors, (189), 106 states have return successors, (191), 166 states have call predecessors, (191), 189 states have call successors, (191) [2023-11-28 20:25:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7863 states to 7863 states and 10749 transitions. [2023-11-28 20:25:55,745 INFO L78 Accepts]: Start accepts. Automaton has 7863 states and 10749 transitions. Word has length 270 [2023-11-28 20:25:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:55,746 INFO L495 AbstractCegarLoop]: Abstraction has 7863 states and 10749 transitions. [2023-11-28 20:25:55,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.904761904761905) internal successors, (334), 20 states have internal predecessors, (334), 7 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-28 20:25:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7863 states and 10749 transitions. [2023-11-28 20:25:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-28 20:25:55,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:55,749 INFO L195 NwaCegarLoop]: trace histogram [48, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:55,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-28 20:25:55,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-28 20:25:55,949 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:55,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash 288236011, now seen corresponding path program 1 times [2023-11-28 20:25:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110056071] [2023-11-28 20:25:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:56,037 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:56,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254652342] [2023-11-28 20:25:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:56,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:56,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:56,038 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:56,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-28 20:25:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:57,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 20:25:57,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:57,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 20:25:57,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:25:57,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:25:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1241 trivial. 0 not checked. [2023-11-28 20:25:57,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1241 trivial. 0 not checked. [2023-11-28 20:25:57,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:57,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110056071] [2023-11-28 20:25:57,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:57,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254652342] [2023-11-28 20:25:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254652342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:57,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:57,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-28 20:25:57,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642785422] [2023-11-28 20:25:57,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:57,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 20:25:57,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 20:25:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:25:57,987 INFO L87 Difference]: Start difference. First operand 7863 states and 10749 transitions. Second operand has 11 states, 11 states have (on average 28.181818181818183) internal successors, (310), 11 states have internal predecessors, (310), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-28 20:25:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:59,128 INFO L93 Difference]: Finished difference Result 17143 states and 23422 transitions. [2023-11-28 20:25:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:25:59,129 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 28.181818181818183) internal successors, (310), 11 states have internal predecessors, (310), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 272 [2023-11-28 20:25:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:59,144 INFO L225 Difference]: With dead ends: 17143 [2023-11-28 20:25:59,144 INFO L226 Difference]: Without dead ends: 10607 [2023-11-28 20:25:59,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 526 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:25:59,151 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1151 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:59,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 4707 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:25:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2023-11-28 20:25:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 8341. [2023-11-28 20:25:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 8019 states have (on average 1.3657563287192918) internal successors, (10952), 8039 states have internal predecessors, (10952), 207 states have call successors, (207), 117 states have call predecessors, (207), 108 states have return successors, (211), 184 states have call predecessors, (211), 207 states have call successors, (211) [2023-11-28 20:25:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 11370 transitions. [2023-11-28 20:25:59,602 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 11370 transitions. Word has length 272 [2023-11-28 20:25:59,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:59,602 INFO L495 AbstractCegarLoop]: Abstraction has 8341 states and 11370 transitions. [2023-11-28 20:25:59,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.181818181818183) internal successors, (310), 11 states have internal predecessors, (310), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-28 20:25:59,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 11370 transitions. [2023-11-28 20:25:59,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-11-28 20:25:59,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:59,605 INFO L195 NwaCegarLoop]: trace histogram [70, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:59,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-28 20:25:59,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-28 20:25:59,806 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:25:59,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 258548737, now seen corresponding path program 1 times [2023-11-28 20:25:59,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:59,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313006882] [2023-11-28 20:25:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:59,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:59,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:59,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80385427] [2023-11-28 20:25:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:59,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:59,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:59,960 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:59,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-28 20:26:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:01,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 20:26:01,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2866 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 2725 trivial. 0 not checked. [2023-11-28 20:26:01,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2866 backedges. 0 proven. 1949 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2023-11-28 20:26:02,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:02,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313006882] [2023-11-28 20:26:02,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:02,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80385427] [2023-11-28 20:26:02,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80385427] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:26:02,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:26:02,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 21 [2023-11-28 20:26:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646833886] [2023-11-28 20:26:02,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:02,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 20:26:02,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:02,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 20:26:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=292, Unknown=0, NotChecked=0, Total=462 [2023-11-28 20:26:02,505 INFO L87 Difference]: Start difference. First operand 8341 states and 11370 transitions. Second operand has 22 states, 21 states have (on average 20.142857142857142) internal successors, (423), 22 states have internal predecessors, (423), 11 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) [2023-11-28 20:26:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:05,609 INFO L93 Difference]: Finished difference Result 35517 states and 48597 transitions. [2023-11-28 20:26:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-28 20:26:05,609 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 20.142857142857142) internal successors, (423), 22 states have internal predecessors, (423), 11 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) Word has length 318 [2023-11-28 20:26:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:05,659 INFO L225 Difference]: With dead ends: 35517 [2023-11-28 20:26:05,659 INFO L226 Difference]: Without dead ends: 35512 [2023-11-28 20:26:05,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 623 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2023-11-28 20:26:05,667 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 7108 mSDsluCounter, 8295 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7184 SdHoareTripleChecker+Valid, 8791 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:05,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7184 Valid, 8791 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 20:26:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35512 states. [2023-11-28 20:26:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35512 to 11876. [2023-11-28 20:26:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11876 states, 11413 states have (on average 1.3416279681065453) internal successors, (15312), 11427 states have internal predecessors, (15312), 285 states have call successors, (285), 193 states have call predecessors, (285), 171 states have return successors, (293), 255 states have call predecessors, (293), 285 states have call successors, (293) [2023-11-28 20:26:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11876 states to 11876 states and 15890 transitions. [2023-11-28 20:26:06,596 INFO L78 Accepts]: Start accepts. Automaton has 11876 states and 15890 transitions. Word has length 318 [2023-11-28 20:26:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:06,597 INFO L495 AbstractCegarLoop]: Abstraction has 11876 states and 15890 transitions. [2023-11-28 20:26:06,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 20.142857142857142) internal successors, (423), 22 states have internal predecessors, (423), 11 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) [2023-11-28 20:26:06,598 INFO L276 IsEmpty]: Start isEmpty. Operand 11876 states and 15890 transitions. [2023-11-28 20:26:06,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-11-28 20:26:06,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:06,601 INFO L195 NwaCegarLoop]: trace histogram [96, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:06,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-28 20:26:06,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:06,802 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:26:06,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1843142625, now seen corresponding path program 1 times [2023-11-28 20:26:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:06,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911107091] [2023-11-28 20:26:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:06,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:06,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2700903] [2023-11-28 20:26:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:06,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:06,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:06,933 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:06,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-28 20:26:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:08,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 20:26:08,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5104 backedges. 76 proven. 3802 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2023-11-28 20:26:08,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5104 backedges. 76 proven. 54 refuted. 0 times theorem prover too weak. 4974 trivial. 0 not checked. [2023-11-28 20:26:09,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:09,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911107091] [2023-11-28 20:26:09,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2700903] [2023-11-28 20:26:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2700903] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:26:09,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:26:09,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 23 [2023-11-28 20:26:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802054383] [2023-11-28 20:26:09,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:09,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:26:09,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:26:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:26:09,357 INFO L87 Difference]: Start difference. First operand 11876 states and 15890 transitions. Second operand has 24 states, 23 states have (on average 14.826086956521738) internal successors, (341), 20 states have internal predecessors, (341), 9 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-28 20:26:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:13,298 INFO L93 Difference]: Finished difference Result 24220 states and 32902 transitions. [2023-11-28 20:26:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-28 20:26:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 14.826086956521738) internal successors, (341), 20 states have internal predecessors, (341), 9 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) Word has length 327 [2023-11-28 20:26:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:13,340 INFO L225 Difference]: With dead ends: 24220 [2023-11-28 20:26:13,340 INFO L226 Difference]: Without dead ends: 24211 [2023-11-28 20:26:13,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=589, Invalid=1303, Unknown=0, NotChecked=0, Total=1892 [2023-11-28 20:26:13,350 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 9503 mSDsluCounter, 8513 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9532 SdHoareTripleChecker+Valid, 9059 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:13,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9532 Valid, 9059 Invalid, 1348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [547 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 20:26:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24211 states. [2023-11-28 20:26:15,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24211 to 17012. [2023-11-28 20:26:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17012 states, 16348 states have (on average 1.3293980915096648) internal successors, (21733), 16377 states have internal predecessors, (21733), 421 states have call successors, (421), 262 states have call predecessors, (421), 236 states have return successors, (436), 372 states have call predecessors, (436), 421 states have call successors, (436) [2023-11-28 20:26:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17012 states to 17012 states and 22590 transitions. [2023-11-28 20:26:15,207 INFO L78 Accepts]: Start accepts. Automaton has 17012 states and 22590 transitions. Word has length 327 [2023-11-28 20:26:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:15,208 INFO L495 AbstractCegarLoop]: Abstraction has 17012 states and 22590 transitions. [2023-11-28 20:26:15,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 14.826086956521738) internal successors, (341), 20 states have internal predecessors, (341), 9 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-28 20:26:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 17012 states and 22590 transitions. [2023-11-28 20:26:15,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-11-28 20:26:15,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:15,216 INFO L195 NwaCegarLoop]: trace histogram [48, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:15,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-28 20:26:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:15,417 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:26:15,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:15,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1842429909, now seen corresponding path program 1 times [2023-11-28 20:26:15,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:15,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422500151] [2023-11-28 20:26:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:15,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:15,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554727200] [2023-11-28 20:26:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:15,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:15,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:15,575 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:15,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-28 20:26:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:17,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-28 20:26:17,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:17,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 20:26:17,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:26:17,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:26:18,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:26:18,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:26:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 1241 trivial. 0 not checked. [2023-11-28 20:26:18,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 1241 trivial. 0 not checked. [2023-11-28 20:26:18,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:18,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422500151] [2023-11-28 20:26:18,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:18,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554727200] [2023-11-28 20:26:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554727200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:26:18,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:26:18,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-28 20:26:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861464168] [2023-11-28 20:26:18,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:18,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 20:26:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 20:26:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-28 20:26:18,851 INFO L87 Difference]: Start difference. First operand 17012 states and 22590 transitions. Second operand has 19 states, 19 states have (on average 33.578947368421055) internal successors, (638), 19 states have internal predecessors, (638), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-28 20:26:22,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:22,242 INFO L93 Difference]: Finished difference Result 47307 states and 63264 transitions. [2023-11-28 20:26:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 20:26:22,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 33.578947368421055) internal successors, (638), 19 states have internal predecessors, (638), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 436 [2023-11-28 20:26:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:22,317 INFO L225 Difference]: With dead ends: 47307 [2023-11-28 20:26:22,317 INFO L226 Difference]: Without dead ends: 39784 [2023-11-28 20:26:22,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 846 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2023-11-28 20:26:22,331 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2741 mSDsluCounter, 4451 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2793 SdHoareTripleChecker+Valid, 4953 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:22,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2793 Valid, 4953 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:26:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39784 states. [2023-11-28 20:26:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39784 to 31806. [2023-11-28 20:26:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31806 states, 30598 states have (on average 1.3116543564938885) internal successors, (40134), 30673 states have internal predecessors, (40134), 965 states have call successors, (965), 262 states have call predecessors, (965), 236 states have return successors, (1017), 870 states have call predecessors, (1017), 965 states have call successors, (1017) [2023-11-28 20:26:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31806 states to 31806 states and 42116 transitions. [2023-11-28 20:26:24,895 INFO L78 Accepts]: Start accepts. Automaton has 31806 states and 42116 transitions. Word has length 436 [2023-11-28 20:26:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:24,895 INFO L495 AbstractCegarLoop]: Abstraction has 31806 states and 42116 transitions. [2023-11-28 20:26:24,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 33.578947368421055) internal successors, (638), 19 states have internal predecessors, (638), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-28 20:26:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 31806 states and 42116 transitions. [2023-11-28 20:26:24,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-11-28 20:26:24,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:24,925 INFO L195 NwaCegarLoop]: trace histogram [192, 9, 9, 9, 9, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:24,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-28 20:26:25,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-28 20:26:25,126 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting alt_freeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:26:25,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:25,127 INFO L85 PathProgramCache]: Analyzing trace with hash 412264276, now seen corresponding path program 1 times [2023-11-28 20:26:25,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:25,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824882224] [2023-11-28 20:26:25,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:25,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:25,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:25,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775400829] [2023-11-28 20:26:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:25,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:25,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:25,484 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:25,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-28 20:26:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:28,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 5774 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-28 20:26:28,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 20982 backedges. 215 proven. 18183 refuted. 0 times theorem prover too weak. 2584 trivial. 0 not checked. [2023-11-28 20:26:29,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 20982 backedges. 215 proven. 523 refuted. 0 times theorem prover too weak. 20244 trivial. 0 not checked. [2023-11-28 20:26:30,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:30,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824882224] [2023-11-28 20:26:30,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:30,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775400829] [2023-11-28 20:26:30,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775400829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:26:30,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:26:30,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 34] total 46 [2023-11-28 20:26:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083972784] [2023-11-28 20:26:30,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:30,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-28 20:26:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-28 20:26:30,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=1646, Unknown=0, NotChecked=0, Total=2162 [2023-11-28 20:26:30,920 INFO L87 Difference]: Start difference. First operand 31806 states and 42116 transitions. Second operand has 47 states, 46 states have (on average 16.565217391304348) internal successors, (762), 38 states have internal predecessors, (762), 19 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (38), 18 states have call predecessors, (38), 19 states have call successors, (38) [2023-11-28 20:26:38,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:38,418 INFO L93 Difference]: Finished difference Result 49038 states and 65975 transitions. [2023-11-28 20:26:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-28 20:26:38,419 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 16.565217391304348) internal successors, (762), 38 states have internal predecessors, (762), 19 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (38), 18 states have call predecessors, (38), 19 states have call successors, (38) Word has length 674 [2023-11-28 20:26:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:38,513 INFO L225 Difference]: With dead ends: 49038 [2023-11-28 20:26:38,513 INFO L226 Difference]: Without dead ends: 49019 [2023-11-28 20:26:38,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1410 GetRequests, 1328 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2202, Invalid=4604, Unknown=0, NotChecked=0, Total=6806 [2023-11-28 20:26:38,528 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 15245 mSDsluCounter, 14023 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 1202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15294 SdHoareTripleChecker+Valid, 14569 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1202 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:38,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15294 Valid, 14569 Invalid, 2592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1202 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-28 20:26:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49019 states. [2023-11-28 20:26:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49019 to 41811. [2023-11-28 20:26:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41811 states, 40357 states have (on average 1.3208365339346333) internal successors, (53305), 40454 states have internal predecessors, (53305), 1118 states have call successors, (1118), 353 states have call predecessors, (1118), 330 states have return successors, (1120), 1003 states have call predecessors, (1120), 1118 states have call successors, (1120) [2023-11-28 20:26:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41811 states to 41811 states and 55543 transitions. [2023-11-28 20:26:42,009 INFO L78 Accepts]: Start accepts. Automaton has 41811 states and 55543 transitions. Word has length 674 [2023-11-28 20:26:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:42,010 INFO L495 AbstractCegarLoop]: Abstraction has 41811 states and 55543 transitions. [2023-11-28 20:26:42,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 16.565217391304348) internal successors, (762), 38 states have internal predecessors, (762), 19 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (38), 18 states have call predecessors, (38), 19 states have call successors, (38) [2023-11-28 20:26:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 41811 states and 55543 transitions. [2023-11-28 20:26:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-11-28 20:26:42,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:42,041 INFO L195 NwaCegarLoop]: trace histogram [192, 10, 10, 9, 9, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:42,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-28 20:26:42,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-28 20:26:42,242 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:26:42,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1042206587, now seen corresponding path program 1 times [2023-11-28 20:26:42,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:42,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041176559] [2023-11-28 20:26:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:42,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:42,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:42,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107736391] [2023-11-28 20:26:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:42,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:42,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:42,627 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:42,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-28 20:26:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:45,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 5906 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 20:26:45,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21011 backedges. 218 proven. 18182 refuted. 0 times theorem prover too weak. 2611 trivial. 0 not checked. [2023-11-28 20:26:46,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 21011 backedges. 218 proven. 543 refuted. 0 times theorem prover too weak. 20250 trivial. 0 not checked. [2023-11-28 20:26:48,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041176559] [2023-11-28 20:26:48,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107736391] [2023-11-28 20:26:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107736391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:26:48,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:26:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 32] total 45 [2023-11-28 20:26:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039380537] [2023-11-28 20:26:48,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:48,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-28 20:26:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:48,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-28 20:26:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 20:26:48,224 INFO L87 Difference]: Start difference. First operand 41811 states and 55543 transitions. Second operand has 46 states, 45 states have (on average 17.266666666666666) internal successors, (777), 40 states have internal predecessors, (777), 17 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) [2023-11-28 20:26:57,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:57,546 INFO L93 Difference]: Finished difference Result 57913 states and 77703 transitions. [2023-11-28 20:26:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-28 20:26:57,547 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 17.266666666666666) internal successors, (777), 40 states have internal predecessors, (777), 17 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) Word has length 688 [2023-11-28 20:26:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:57,652 INFO L225 Difference]: With dead ends: 57913 [2023-11-28 20:26:57,653 INFO L226 Difference]: Without dead ends: 57912 [2023-11-28 20:26:57,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1347 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2663, Invalid=6457, Unknown=0, NotChecked=0, Total=9120 [2023-11-28 20:26:57,672 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 14712 mSDsluCounter, 15323 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 1352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14767 SdHoareTripleChecker+Valid, 15869 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1352 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:57,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14767 Valid, 15869 Invalid, 2892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1352 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-28 20:26:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57912 states. [2023-11-28 20:27:01,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57912 to 45599. [2023-11-28 20:27:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45599 states, 44028 states have (on average 1.3228400109021532) internal successors, (58242), 44130 states have internal predecessors, (58242), 1200 states have call successors, (1200), 390 states have call predecessors, (1200), 365 states have return successors, (1202), 1078 states have call predecessors, (1202), 1200 states have call successors, (1202) [2023-11-28 20:27:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45599 states to 45599 states and 60644 transitions. [2023-11-28 20:27:01,529 INFO L78 Accepts]: Start accepts. Automaton has 45599 states and 60644 transitions. Word has length 688 [2023-11-28 20:27:01,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:27:01,530 INFO L495 AbstractCegarLoop]: Abstraction has 45599 states and 60644 transitions. [2023-11-28 20:27:01,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 17.266666666666666) internal successors, (777), 40 states have internal predecessors, (777), 17 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) [2023-11-28 20:27:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand 45599 states and 60644 transitions. [2023-11-28 20:27:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-11-28 20:27:01,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:27:01,563 INFO L195 NwaCegarLoop]: trace histogram [166, 11, 11, 11, 11, 11, 11, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:01,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-28 20:27:01,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-28 20:27:01,764 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:27:01,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1700541025, now seen corresponding path program 2 times [2023-11-28 20:27:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648399379] [2023-11-28 20:27:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:02,130 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:27:02,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318409031] [2023-11-28 20:27:02,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:27:02,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:27:02,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:02,132 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:27:02,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-28 20:27:05,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:27:05,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:27:05,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-28 20:27:05,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16501 backedges. 3870 proven. 0 refuted. 0 times theorem prover too weak. 12631 trivial. 0 not checked. [2023-11-28 20:27:05,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:27:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:27:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648399379] [2023-11-28 20:27:05,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:27:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318409031] [2023-11-28 20:27:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318409031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:27:05,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:27:05,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:27:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546827595] [2023-11-28 20:27:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:27:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:27:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:27:05,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:27:05,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:27:05,536 INFO L87 Difference]: Start difference. First operand 45599 states and 60644 transitions. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-28 20:27:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:27:09,209 INFO L93 Difference]: Finished difference Result 91671 states and 122201 transitions. [2023-11-28 20:27:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:27:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 716 [2023-11-28 20:27:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:27:09,302 INFO L225 Difference]: With dead ends: 91671 [2023-11-28 20:27:09,302 INFO L226 Difference]: Without dead ends: 46439 [2023-11-28 20:27:09,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:27:09,351 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 11 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:27:09,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2332 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:27:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46439 states. [2023-11-28 20:27:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46439 to 46271. [2023-11-28 20:27:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46271 states, 44700 states have (on average 1.317986577181208) internal successors, (58914), 44802 states have internal predecessors, (58914), 1200 states have call successors, (1200), 390 states have call predecessors, (1200), 365 states have return successors, (1202), 1078 states have call predecessors, (1202), 1200 states have call successors, (1202) [2023-11-28 20:27:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46271 states to 46271 states and 61316 transitions. [2023-11-28 20:27:13,227 INFO L78 Accepts]: Start accepts. Automaton has 46271 states and 61316 transitions. Word has length 716 [2023-11-28 20:27:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:27:13,228 INFO L495 AbstractCegarLoop]: Abstraction has 46271 states and 61316 transitions. [2023-11-28 20:27:13,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-28 20:27:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 46271 states and 61316 transitions. [2023-11-28 20:27:13,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-11-28 20:27:13,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:27:13,257 INFO L195 NwaCegarLoop]: trace histogram [166, 11, 11, 11, 11, 11, 11, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:27:13,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-28 20:27:13,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-28 20:27:13,458 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:27:13,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:27:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash -985287331, now seen corresponding path program 1 times [2023-11-28 20:27:13,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:27:13,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684158232] [2023-11-28 20:27:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:13,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:27:13,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:27:13,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581176953] [2023-11-28 20:27:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:27:13,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:27:13,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:27:13,847 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:27:13,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-28 20:27:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:27:17,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 6017 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-28 20:27:17,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:27:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16495 backedges. 0 proven. 915 refuted. 0 times theorem prover too weak. 15580 trivial. 0 not checked. [2023-11-28 20:27:18,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:27:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16495 backedges. 0 proven. 14082 refuted. 0 times theorem prover too weak. 2413 trivial. 0 not checked. [2023-11-28 20:27:20,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:27:20,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684158232] [2023-11-28 20:27:20,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:27:20,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581176953] [2023-11-28 20:27:20,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581176953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:27:20,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:27:20,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 32] total 45 [2023-11-28 20:27:20,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652945570] [2023-11-28 20:27:20,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:27:20,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-28 20:27:20,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:27:20,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-28 20:27:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=1360, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 20:27:20,718 INFO L87 Difference]: Start difference. First operand 46271 states and 61316 transitions. Second operand has 46 states, 45 states have (on average 20.244444444444444) internal successors, (911), 46 states have internal predecessors, (911), 23 states have call successors, (52), 24 states have call predecessors, (52), 23 states have return successors, (50), 23 states have call predecessors, (50), 23 states have call successors, (50) [2023-11-28 20:27:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:27:51,689 INFO L93 Difference]: Finished difference Result 314921 states and 429404 transitions. [2023-11-28 20:27:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-28 20:27:51,690 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 20.244444444444444) internal successors, (911), 46 states have internal predecessors, (911), 23 states have call successors, (52), 24 states have call predecessors, (52), 23 states have return successors, (50), 23 states have call predecessors, (50), 23 states have call successors, (50) Word has length 716 [2023-11-28 20:27:51,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:27:52,508 INFO L225 Difference]: With dead ends: 314921 [2023-11-28 20:27:52,508 INFO L226 Difference]: Without dead ends: 314918 [2023-11-28 20:27:52,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1495 GetRequests, 1407 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2843, Invalid=4989, Unknown=0, NotChecked=0, Total=7832 [2023-11-28 20:27:52,564 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 26424 mSDsluCounter, 16870 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 2018 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26616 SdHoareTripleChecker+Valid, 17366 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2018 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:27:52,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26616 Valid, 17366 Invalid, 3455 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2018 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-28 20:27:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314918 states. [2023-11-28 20:28:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314918 to 95962. [2023-11-28 20:28:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95962 states, 92656 states have (on average 1.285680366085305) internal successors, (119126), 92765 states have internal predecessors, (119126), 2341 states have call successors, (2341), 1015 states have call predecessors, (2341), 959 states have return successors, (2347), 2181 states have call predecessors, (2347), 2341 states have call successors, (2347) [2023-11-28 20:28:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95962 states to 95962 states and 123814 transitions. [2023-11-28 20:28:04,032 INFO L78 Accepts]: Start accepts. Automaton has 95962 states and 123814 transitions. Word has length 716 [2023-11-28 20:28:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:28:04,033 INFO L495 AbstractCegarLoop]: Abstraction has 95962 states and 123814 transitions. [2023-11-28 20:28:04,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 20.244444444444444) internal successors, (911), 46 states have internal predecessors, (911), 23 states have call successors, (52), 24 states have call predecessors, (52), 23 states have return successors, (50), 23 states have call predecessors, (50), 23 states have call successors, (50) [2023-11-28 20:28:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 95962 states and 123814 transitions. [2023-11-28 20:28:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-11-28 20:28:04,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:28:04,061 INFO L195 NwaCegarLoop]: trace histogram [48, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:28:04,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-28 20:28:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-28 20:28:04,262 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:28:04,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:28:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1706523199, now seen corresponding path program 1 times [2023-11-28 20:28:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:28:04,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979841032] [2023-11-28 20:28:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:28:04,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:28:04,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:28:04,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37974472] [2023-11-28 20:28:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:28:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:28:04,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:28:04,557 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:28:04,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-28 20:28:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:28:07,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 20:28:07,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:28:07,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 20:28:07,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:28:07,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:28:07,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:28:07,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:28:07,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:28:08,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:28:08,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:28:08,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:28:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2953 backedges. 0 proven. 1712 refuted. 0 times theorem prover too weak. 1241 trivial. 0 not checked. [2023-11-28 20:28:08,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:28:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2953 backedges. 0 proven. 1712 refuted. 0 times theorem prover too weak. 1241 trivial. 0 not checked. [2023-11-28 20:28:09,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:28:09,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979841032] [2023-11-28 20:28:09,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:28:09,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37974472] [2023-11-28 20:28:09,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37974472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:28:09,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:28:09,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2023-11-28 20:28:09,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128663732] [2023-11-28 20:28:09,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:28:09,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-28 20:28:09,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:28:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-28 20:28:09,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2023-11-28 20:28:09,403 INFO L87 Difference]: Start difference. First operand 95962 states and 123814 transitions. Second operand has 29 states, 29 states have (on average 31.310344827586206) internal successors, (908), 29 states have internal predecessors, (908), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-28 20:28:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:28:22,109 INFO L93 Difference]: Finished difference Result 207881 states and 272338 transitions. [2023-11-28 20:28:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-28 20:28:22,110 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 31.310344827586206) internal successors, (908), 29 states have internal predecessors, (908), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 764 [2023-11-28 20:28:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:28:22,411 INFO L225 Difference]: With dead ends: 207881 [2023-11-28 20:28:22,411 INFO L226 Difference]: Without dead ends: 190849 [2023-11-28 20:28:22,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1538 GetRequests, 1486 SyntacticMatches, 13 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2023-11-28 20:28:22,444 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 2284 mSDsluCounter, 5356 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 5856 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:28:22,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 5856 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:28:22,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190849 states. [2023-11-28 20:28:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190849 to 158249. [2023-11-28 20:28:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158249 states, 153030 states have (on average 1.285741357903679) internal successors, (196757), 153209 states have internal predecessors, (196757), 4254 states have call successors, (4254), 1015 states have call predecessors, (4254), 959 states have return successors, (4270), 4024 states have call predecessors, (4270), 4254 states have call successors, (4270) [2023-11-28 20:28:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158249 states to 158249 states and 205281 transitions. [2023-11-28 20:28:33,888 INFO L78 Accepts]: Start accepts. Automaton has 158249 states and 205281 transitions. Word has length 764 [2023-11-28 20:28:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:28:33,889 INFO L495 AbstractCegarLoop]: Abstraction has 158249 states and 205281 transitions. [2023-11-28 20:28:33,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 31.310344827586206) internal successors, (908), 29 states have internal predecessors, (908), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-28 20:28:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 158249 states and 205281 transitions. [2023-11-28 20:28:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2023-11-28 20:28:33,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:28:33,983 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:28:34,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-28 20:28:34,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-28 20:28:34,184 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:28:34,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:28:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash 569047628, now seen corresponding path program 2 times [2023-11-28 20:28:34,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:28:34,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635490304] [2023-11-28 20:28:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:28:34,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:28:34,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:28:34,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084565591] [2023-11-28 20:28:34,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:28:34,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:28:34,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:28:34,503 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:28:34,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-28 20:28:36,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:28:36,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:28:36,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:28:36,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:28:36,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 20:28:36,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:28:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4915 trivial. 0 not checked. [2023-11-28 20:28:36,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:28:36,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:28:36,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635490304] [2023-11-28 20:28:36,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:28:36,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084565591] [2023-11-28 20:28:36,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084565591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:28:36,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:28:36,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:28:36,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857898804] [2023-11-28 20:28:36,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:28:36,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:28:36,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:28:36,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:28:36,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:28:36,704 INFO L87 Difference]: Start difference. First operand 158249 states and 205281 transitions. Second operand has 5 states, 4 states have (on average 51.5) internal successors, (206), 5 states have internal predecessors, (206), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:28:40,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:28:44,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:28:48,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:28:52,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:28:56,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:29:00,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 20:29:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:29:10,855 INFO L93 Difference]: Finished difference Result 158249 states and 205281 transitions. [2023-11-28 20:29:10,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:29:10,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 51.5) internal successors, (206), 5 states have internal predecessors, (206), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 1010 [2023-11-28 20:29:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:29:11,117 INFO L225 Difference]: With dead ends: 158249 [2023-11-28 20:29:11,118 INFO L226 Difference]: Without dead ends: 158248 [2023-11-28 20:29:11,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 1003 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:29:11,147 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 411 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:29:11,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1414 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2023-11-28 20:29:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158248 states. [2023-11-28 20:29:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158248 to 158248. [2023-11-28 20:29:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158248 states, 153030 states have (on average 1.2852643272560935) internal successors, (196684), 153208 states have internal predecessors, (196684), 4254 states have call successors, (4254), 1015 states have call predecessors, (4254), 959 states have return successors, (4270), 4024 states have call predecessors, (4270), 4254 states have call successors, (4270) [2023-11-28 20:29:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158248 states to 158248 states and 205208 transitions. [2023-11-28 20:29:22,429 INFO L78 Accepts]: Start accepts. Automaton has 158248 states and 205208 transitions. Word has length 1010 [2023-11-28 20:29:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:29:22,430 INFO L495 AbstractCegarLoop]: Abstraction has 158248 states and 205208 transitions. [2023-11-28 20:29:22,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 51.5) internal successors, (206), 5 states have internal predecessors, (206), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:29:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 158248 states and 205208 transitions. [2023-11-28 20:29:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2023-11-28 20:29:22,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:29:22,504 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:29:22,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-28 20:29:22,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-28 20:29:22,705 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:29:22,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:29:22,705 INFO L85 PathProgramCache]: Analyzing trace with hash 460608831, now seen corresponding path program 1 times [2023-11-28 20:29:22,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:29:22,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486241544] [2023-11-28 20:29:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:29:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:29:23,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:29:23,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105872655] [2023-11-28 20:29:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:29:23,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:29:23,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:29:23,227 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:29:23,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-28 20:29:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:29:26,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 5183 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:29:26,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:29:26,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:29:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4915 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4915 trivial. 0 not checked. [2023-11-28 20:29:26,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:29:26,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:29:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486241544] [2023-11-28 20:29:26,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:29:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105872655] [2023-11-28 20:29:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105872655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:29:26,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:29:26,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:29:26,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281624863] [2023-11-28 20:29:26,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:29:26,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:29:26,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:29:26,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:29:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:29:26,530 INFO L87 Difference]: Start difference. First operand 158248 states and 205208 transitions. Second operand has 6 states, 5 states have (on average 41.4) internal successors, (207), 6 states have internal predecessors, (207), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:29:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:29:37,052 INFO L93 Difference]: Finished difference Result 160604 states and 208115 transitions. [2023-11-28 20:29:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:29:37,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 41.4) internal successors, (207), 6 states have internal predecessors, (207), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 1011 [2023-11-28 20:29:37,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:29:37,319 INFO L225 Difference]: With dead ends: 160604 [2023-11-28 20:29:37,319 INFO L226 Difference]: Without dead ends: 160603 [2023-11-28 20:29:37,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 1003 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:29:37,342 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 409 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:29:37,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 2004 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:29:37,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160603 states. [2023-11-28 20:29:49,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160603 to 156289. [2023-11-28 20:29:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156289 states, 151232 states have (on average 1.2851248413034277) internal successors, (194352), 151377 states have internal predecessors, (194352), 4142 states have call successors, (4142), 967 states have call predecessors, (4142), 911 states have return successors, (4158), 3944 states have call predecessors, (4158), 4142 states have call successors, (4158) [2023-11-28 20:29:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156289 states to 156289 states and 202652 transitions. [2023-11-28 20:29:49,550 INFO L78 Accepts]: Start accepts. Automaton has 156289 states and 202652 transitions. Word has length 1011 [2023-11-28 20:29:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:29:49,551 INFO L495 AbstractCegarLoop]: Abstraction has 156289 states and 202652 transitions. [2023-11-28 20:29:49,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 41.4) internal successors, (207), 6 states have internal predecessors, (207), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:29:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 156289 states and 202652 transitions. [2023-11-28 20:29:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2023-11-28 20:29:49,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:29:49,624 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:29:49,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-28 20:29:49,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:29:49,825 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:29:49,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:29:49,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1424199483, now seen corresponding path program 1 times [2023-11-28 20:29:49,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:29:49,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135304320] [2023-11-28 20:29:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:29:49,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:29:50,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:29:50,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9985881] [2023-11-28 20:29:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:29:50,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:29:50,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:29:50,254 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:29:50,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-28 20:29:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:29:53,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 5274 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:29:53,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:29:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4989 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4909 trivial. 0 not checked. [2023-11-28 20:29:54,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:29:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4989 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4909 trivial. 0 not checked. [2023-11-28 20:29:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:29:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135304320] [2023-11-28 20:29:55,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:29:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9985881] [2023-11-28 20:29:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9985881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:29:55,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:29:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2023-11-28 20:29:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414401479] [2023-11-28 20:29:55,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:29:55,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:29:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:29:55,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:29:55,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:29:55,776 INFO L87 Difference]: Start difference. First operand 156289 states and 202652 transitions. Second operand has 12 states, 11 states have (on average 40.72727272727273) internal successors, (448), 12 states have internal predecessors, (448), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:30:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:12,047 INFO L93 Difference]: Finished difference Result 197772 states and 256989 transitions. [2023-11-28 20:30:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:30:12,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 40.72727272727273) internal successors, (448), 12 states have internal predecessors, (448), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 1019 [2023-11-28 20:30:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:12,403 INFO L225 Difference]: With dead ends: 197772 [2023-11-28 20:30:12,403 INFO L226 Difference]: Without dead ends: 197771 [2023-11-28 20:30:12,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2036 GetRequests, 2026 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:30:12,432 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 5332 mSDsluCounter, 2983 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5332 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:12,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5332 Valid, 3508 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:30:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197771 states. [2023-11-28 20:30:25,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197771 to 171859. [2023-11-28 20:30:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171859 states, 166802 states have (on average 1.298977230488843) internal successors, (216672), 166947 states have internal predecessors, (216672), 4142 states have call successors, (4142), 967 states have call predecessors, (4142), 911 states have return successors, (4158), 3944 states have call predecessors, (4158), 4142 states have call successors, (4158) [2023-11-28 20:30:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171859 states to 171859 states and 224972 transitions. [2023-11-28 20:30:25,888 INFO L78 Accepts]: Start accepts. Automaton has 171859 states and 224972 transitions. Word has length 1019 [2023-11-28 20:30:25,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:30:25,889 INFO L495 AbstractCegarLoop]: Abstraction has 171859 states and 224972 transitions. [2023-11-28 20:30:25,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 40.72727272727273) internal successors, (448), 12 states have internal predecessors, (448), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:30:25,889 INFO L276 IsEmpty]: Start isEmpty. Operand 171859 states and 224972 transitions. [2023-11-28 20:30:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2023-11-28 20:30:25,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:30:25,983 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:30:26,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-28 20:30:26,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:26,184 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:30:26,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:30:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash -668089148, now seen corresponding path program 1 times [2023-11-28 20:30:26,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:30:26,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056423415] [2023-11-28 20:30:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:30:26,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:30:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061546731] [2023-11-28 20:30:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:26,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:30:26,532 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:30:26,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-28 20:30:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:30:29,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 5570 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-28 20:30:29,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:30:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5378 backedges. 1165 proven. 177 refuted. 0 times theorem prover too weak. 4036 trivial. 0 not checked. [2023-11-28 20:30:31,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:30:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5378 backedges. 528 proven. 447 refuted. 0 times theorem prover too weak. 4403 trivial. 0 not checked. [2023-11-28 20:30:33,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:30:33,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056423415] [2023-11-28 20:30:33,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:30:33,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061546731] [2023-11-28 20:30:33,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061546731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:30:33,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:30:33,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 34] total 49 [2023-11-28 20:30:33,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060658372] [2023-11-28 20:30:33,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:30:33,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-28 20:30:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:30:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-28 20:30:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=1692, Unknown=0, NotChecked=0, Total=2450 [2023-11-28 20:30:33,650 INFO L87 Difference]: Start difference. First operand 171859 states and 224972 transitions. Second operand has 50 states, 49 states have (on average 9.775510204081632) internal successors, (479), 50 states have internal predecessors, (479), 23 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (36), 22 states have call predecessors, (36), 21 states have call successors, (36) [2023-11-28 20:30:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:47,475 INFO L93 Difference]: Finished difference Result 173965 states and 227889 transitions. [2023-11-28 20:30:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-28 20:30:47,476 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 9.775510204081632) internal successors, (479), 50 states have internal predecessors, (479), 23 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (36), 22 states have call predecessors, (36), 21 states have call successors, (36) Word has length 1065 [2023-11-28 20:30:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:47,763 INFO L225 Difference]: With dead ends: 173965 [2023-11-28 20:30:47,763 INFO L226 Difference]: Without dead ends: 173964 [2023-11-28 20:30:47,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2182 GetRequests, 2085 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3304, Invalid=6202, Unknown=0, NotChecked=0, Total=9506 [2023-11-28 20:30:47,790 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 5507 mSDsluCounter, 3926 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5518 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:47,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5518 Valid, 4541 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 20:30:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173964 states. [2023-11-28 20:31:00,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173964 to 172891. [2023-11-28 20:31:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172891 states, 167750 states have (on average 1.298861400894188) internal successors, (217884), 167895 states have internal predecessors, (217884), 4190 states have call successors, (4190), 1003 states have call predecessors, (4190), 947 states have return successors, (4206), 3992 states have call predecessors, (4206), 4190 states have call successors, (4206) [2023-11-28 20:31:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172891 states to 172891 states and 226280 transitions. [2023-11-28 20:31:01,529 INFO L78 Accepts]: Start accepts. Automaton has 172891 states and 226280 transitions. Word has length 1065 [2023-11-28 20:31:01,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:31:01,530 INFO L495 AbstractCegarLoop]: Abstraction has 172891 states and 226280 transitions. [2023-11-28 20:31:01,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 9.775510204081632) internal successors, (479), 50 states have internal predecessors, (479), 23 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (36), 22 states have call predecessors, (36), 21 states have call successors, (36) [2023-11-28 20:31:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 172891 states and 226280 transitions. [2023-11-28 20:31:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2023-11-28 20:31:01,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:31:01,630 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:31:01,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-28 20:31:01,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:31:01,830 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:31:01,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:31:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2024018715, now seen corresponding path program 2 times [2023-11-28 20:31:01,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:31:01,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348920474] [2023-11-28 20:31:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:31:01,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:31:02,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:31:02,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038510226] [2023-11-28 20:31:02,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:31:02,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:31:02,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:31:02,325 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:31:02,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-28 20:31:05,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:31:05,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:31:05,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 20:31:05,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:31:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5409 trivial. 0 not checked. [2023-11-28 20:31:05,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:31:05,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:31:05,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348920474] [2023-11-28 20:31:05,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:31:05,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038510226] [2023-11-28 20:31:05,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038510226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:31:05,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:31:05,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:31:05,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837938827] [2023-11-28 20:31:05,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:31:05,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:31:05,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:31:05,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:31:05,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:31:05,520 INFO L87 Difference]: Start difference. First operand 172891 states and 226280 transitions. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:31:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:31:17,495 INFO L93 Difference]: Finished difference Result 209980 states and 277748 transitions. [2023-11-28 20:31:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:31:17,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1079 [2023-11-28 20:31:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:31:17,775 INFO L225 Difference]: With dead ends: 209980 [2023-11-28 20:31:17,775 INFO L226 Difference]: Without dead ends: 179491 [2023-11-28 20:31:17,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1074 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:31:17,810 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 12 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:31:17,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1784 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:31:17,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179491 states. [2023-11-28 20:31:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179491 to 178996. [2023-11-28 20:31:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178996 states, 173855 states have (on average 1.2950102096574732) internal successors, (225144), 174000 states have internal predecessors, (225144), 4190 states have call successors, (4190), 1003 states have call predecessors, (4190), 947 states have return successors, (4206), 3992 states have call predecessors, (4206), 4190 states have call successors, (4206) [2023-11-28 20:31:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178996 states to 178996 states and 233540 transitions. [2023-11-28 20:31:30,798 INFO L78 Accepts]: Start accepts. Automaton has 178996 states and 233540 transitions. Word has length 1079 [2023-11-28 20:31:30,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:31:30,799 INFO L495 AbstractCegarLoop]: Abstraction has 178996 states and 233540 transitions. [2023-11-28 20:31:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:31:30,799 INFO L276 IsEmpty]: Start isEmpty. Operand 178996 states and 233540 transitions. [2023-11-28 20:31:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2023-11-28 20:31:30,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:31:30,893 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:31:30,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-28 20:31:31,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-11-28 20:31:31,093 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:31:31,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:31:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1920230338, now seen corresponding path program 1 times [2023-11-28 20:31:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:31:31,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927968007] [2023-11-28 20:31:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:31:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:31:31,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:31:31,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205393126] [2023-11-28 20:31:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:31:31,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:31:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:31:31,557 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:31:31,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-28 20:31:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:31:34,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 5599 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:31:34,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:31:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5409 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 4909 trivial. 0 not checked. [2023-11-28 20:31:36,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:31:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5409 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 4909 trivial. 0 not checked. [2023-11-28 20:31:37,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:31:37,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927968007] [2023-11-28 20:31:37,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:31:37,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205393126] [2023-11-28 20:31:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205393126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:31:37,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:31:37,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2023-11-28 20:31:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128033497] [2023-11-28 20:31:37,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:31:37,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:31:37,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:31:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:31:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:31:37,652 INFO L87 Difference]: Start difference. First operand 178996 states and 233540 transitions. Second operand has 24 states, 23 states have (on average 24.782608695652176) internal successors, (570), 24 states have internal predecessors, (570), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:32:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:32:09,405 INFO L93 Difference]: Finished difference Result 297045 states and 385863 transitions. [2023-11-28 20:32:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 20:32:09,406 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 24.782608695652176) internal successors, (570), 24 states have internal predecessors, (570), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 1080 [2023-11-28 20:32:09,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:32:09,921 INFO L225 Difference]: With dead ends: 297045 [2023-11-28 20:32:09,921 INFO L226 Difference]: Without dead ends: 297044 [2023-11-28 20:32:09,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2158 GetRequests, 2136 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:32:09,957 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 14737 mSDsluCounter, 6547 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14737 SdHoareTripleChecker+Valid, 7072 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:32:09,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14737 Valid, 7072 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 20:32:10,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297044 states. [2023-11-28 20:32:26,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297044 to 216796. [2023-11-28 20:32:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216796 states, 211655 states have (on average 1.3120597198270771) internal successors, (277704), 211800 states have internal predecessors, (277704), 4190 states have call successors, (4190), 1003 states have call predecessors, (4190), 947 states have return successors, (4206), 3992 states have call predecessors, (4206), 4190 states have call successors, (4206) [2023-11-28 20:32:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216796 states to 216796 states and 286100 transitions. [2023-11-28 20:32:27,273 INFO L78 Accepts]: Start accepts. Automaton has 216796 states and 286100 transitions. Word has length 1080 [2023-11-28 20:32:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:32:27,274 INFO L495 AbstractCegarLoop]: Abstraction has 216796 states and 286100 transitions. [2023-11-28 20:32:27,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 24.782608695652176) internal successors, (570), 24 states have internal predecessors, (570), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:32:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 216796 states and 286100 transitions. [2023-11-28 20:32:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1216 [2023-11-28 20:32:27,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:32:27,648 INFO L195 NwaCegarLoop]: trace histogram [48, 23, 22, 22, 22, 22, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:32:27,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-28 20:32:27,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:32:27,849 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:32:27,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:32:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1591417724, now seen corresponding path program 2 times [2023-11-28 20:32:27,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:32:27,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012497977] [2023-11-28 20:32:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:32:27,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:32:28,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:32:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858262949] [2023-11-28 20:32:28,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:32:28,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:32:28,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:32:28,207 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:32:28,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-28 20:32:30,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:32:30,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:32:30,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:32:30,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:32:31,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 20:32:31,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-11-28 20:32:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7133 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7121 trivial. 0 not checked. [2023-11-28 20:32:31,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:32:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:32:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012497977] [2023-11-28 20:32:31,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:32:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858262949] [2023-11-28 20:32:31,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858262949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:32:31,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:32:31,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:32:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706519213] [2023-11-28 20:32:31,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:32:31,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:32:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:32:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:32:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:32:31,059 INFO L87 Difference]: Start difference. First operand 216796 states and 286100 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-28 20:32:45,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:32:45,449 INFO L93 Difference]: Finished difference Result 234766 states and 309091 transitions. [2023-11-28 20:32:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:32:45,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 1215 [2023-11-28 20:32:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:32:45,833 INFO L225 Difference]: With dead ends: 234766 [2023-11-28 20:32:45,833 INFO L226 Difference]: Without dead ends: 231546 [2023-11-28 20:32:45,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1215 GetRequests, 1212 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:32:45,983 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 424 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:32:45,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1526 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:32:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231546 states. [2023-11-28 20:33:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231546 to 216796. [2023-11-28 20:33:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216796 states, 211655 states have (on average 1.3119888497791217) internal successors, (277689), 211800 states have internal predecessors, (277689), 4190 states have call successors, (4190), 1003 states have call predecessors, (4190), 947 states have return successors, (4206), 3992 states have call predecessors, (4206), 4190 states have call successors, (4206) [2023-11-28 20:33:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216796 states to 216796 states and 286085 transitions. [2023-11-28 20:33:01,845 INFO L78 Accepts]: Start accepts. Automaton has 216796 states and 286085 transitions. Word has length 1215 [2023-11-28 20:33:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:33:01,846 INFO L495 AbstractCegarLoop]: Abstraction has 216796 states and 286085 transitions. [2023-11-28 20:33:01,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-28 20:33:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 216796 states and 286085 transitions. [2023-11-28 20:33:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2023-11-28 20:33:01,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:33:01,977 INFO L195 NwaCegarLoop]: trace histogram [48, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:33:01,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-28 20:33:02,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:33:02,178 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:33:02,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:33:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1984567038, now seen corresponding path program 2 times [2023-11-28 20:33:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:33:02,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96607767] [2023-11-28 20:33:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:33:02,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:33:02,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:33:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108422363] [2023-11-28 20:33:02,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:33:02,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:33:02,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:33:02,715 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:33:02,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-28 20:33:05,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:33:05,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:33:05,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 20:33:05,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:33:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7329 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7329 trivial. 0 not checked. [2023-11-28 20:33:05,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:33:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:33:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96607767] [2023-11-28 20:33:05,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:33:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108422363] [2023-11-28 20:33:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108422363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:33:05,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:33:05,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:33:05,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184024118] [2023-11-28 20:33:05,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:33:05,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:33:05,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:33:05,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:33:05,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:33:05,763 INFO L87 Difference]: Start difference. First operand 216796 states and 286085 transitions. Second operand has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 7 states have internal predecessors, (191), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:33:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:33:20,959 INFO L93 Difference]: Finished difference Result 294310 states and 394298 transitions. [2023-11-28 20:33:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:33:20,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 7 states have internal predecessors, (191), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1200 [2023-11-28 20:33:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:33:21,477 INFO L225 Difference]: With dead ends: 294310 [2023-11-28 20:33:21,477 INFO L226 Difference]: Without dead ends: 220591 [2023-11-28 20:33:21,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:33:21,526 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 17 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:33:21,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2517 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:33:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220591 states. [2023-11-28 20:33:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220591 to 219556. [2023-11-28 20:33:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219556 states, 214415 states have (on average 1.3144089732528041) internal successors, (281829), 214560 states have internal predecessors, (281829), 4190 states have call successors, (4190), 1003 states have call predecessors, (4190), 947 states have return successors, (4206), 3992 states have call predecessors, (4206), 4190 states have call successors, (4206) [2023-11-28 20:33:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219556 states to 219556 states and 290225 transitions. [2023-11-28 20:33:37,431 INFO L78 Accepts]: Start accepts. Automaton has 219556 states and 290225 transitions. Word has length 1200 [2023-11-28 20:33:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:33:37,432 INFO L495 AbstractCegarLoop]: Abstraction has 219556 states and 290225 transitions. [2023-11-28 20:33:37,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 7 states have internal predecessors, (191), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:33:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 219556 states and 290225 transitions. [2023-11-28 20:33:37,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2023-11-28 20:33:37,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:33:37,569 INFO L195 NwaCegarLoop]: trace histogram [48, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:33:37,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-11-28 20:33:37,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:33:37,770 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 20:33:37,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:33:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1088360186, now seen corresponding path program 1 times [2023-11-28 20:33:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:33:37,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487518004] [2023-11-28 20:33:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:33:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:33:38,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:33:38,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501822506] [2023-11-28 20:33:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:33:38,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:33:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:33:38,323 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:33:38,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7fba2c2-0c7f-4a46-ba88-28c0a75076b9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-28 20:33:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:33:42,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 6248 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 20:33:42,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:33:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7329 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 4909 trivial. 0 not checked. [2023-11-28 20:33:43,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:33:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7329 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 4909 trivial. 0 not checked. [2023-11-28 20:33:46,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:33:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487518004] [2023-11-28 20:33:46,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:33:46,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501822506] [2023-11-28 20:33:46,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501822506] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:33:46,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:33:46,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 47 [2023-11-28 20:33:46,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138542132] [2023-11-28 20:33:46,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:33:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-28 20:33:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:33:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-28 20:33:46,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-28 20:33:46,246 INFO L87 Difference]: Start difference. First operand 219556 states and 290225 transitions. Second operand has 48 states, 47 states have (on average 17.27659574468085) internal successors, (812), 48 states have internal predecessors, (812), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)