./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/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_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/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_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/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 ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:30:31,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:30:31,716 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:30:31,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:30:31,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:30:31,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:30:31,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:30:31,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:30:31,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:30:31,748 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:30:31,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:30:31,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:30:31,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:30:31,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:30:31,750 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:30:31,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:30:31,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:30:31,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:30:31,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:30:31,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:30:31,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:30:31,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:30:31,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:30:31,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:30:31,758 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:30:31,759 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:30:31,759 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:30:31,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:30:31,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:30:31,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:30:31,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:30:31,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:30:31,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:30:31,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:30:31,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:30:31,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:30:31,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:30:31,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:30:31,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:30:31,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:30:31,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:30:31,763 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:30:31,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:30:31,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:30:31,764 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_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2023-11-28 23:30:31,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:30:31,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:30:32,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:30:32,002 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:30:32,003 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:30:32,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2023-11-28 23:30:34,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:30:34,985 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:30:34,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2023-11-28 23:30:35,005 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/data/ae309d3b4/0f1bc86f69b847a290f67c725f8ba2fd/FLAG16234f0cb [2023-11-28 23:30:35,019 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/data/ae309d3b4/0f1bc86f69b847a290f67c725f8ba2fd [2023-11-28 23:30:35,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:30:35,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:30:35,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:30:35,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:30:35,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:30:35,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:35,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c82fc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35, skipping insertion in model container [2023-11-28 23:30:35,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:35,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:30:35,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:30:35,681 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:30:35,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:30:35,834 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:30:35,842 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:30:35,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35 WrapperNode [2023-11-28 23:30:35,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:30:35,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:30:35,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:30:35,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:30:35,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:35,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:35,982 INFO L138 Inliner]: procedures = 282, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1383 [2023-11-28 23:30:35,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:30:35,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:30:35,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:30:35,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:30:36,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,104 INFO L175 MemorySlicer]: Split 264 memory accesses to 5 slices as follows [2, 3, 34, 220, 5]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 56 writes are split as follows [0, 2, 4, 49, 1]. [2023-11-28 23:30:36,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:30:36,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:30:36,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:30:36,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:30:36,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (1/1) ... [2023-11-28 23:30:36,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:30:36,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:36,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:30:36,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:30:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-28 23:30:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-28 23:30:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:30:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-28 23:30:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-28 23:30:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-28 23:30:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-28 23:30:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-28 23:30:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-28 23:30:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:30:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-28 23:30:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-28 23:30:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:30:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:30:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:30:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 23:30:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 23:30:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-28 23:30:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-28 23:30:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:30:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:30:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:30:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:30:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 23:30:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:30:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:30:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-28 23:30:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-28 23:30:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-28 23:30:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-28 23:30:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-28 23:30:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:30:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:30:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:30:36,477 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:30:36,479 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:30:37,742 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:30:37,788 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:30:37,788 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-28 23:30:37,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:30:37 BoogieIcfgContainer [2023-11-28 23:30:37,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:30:37,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:30:37,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:30:37,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:30:37,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:30:35" (1/3) ... [2023-11-28 23:30:37,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f566798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:30:37, skipping insertion in model container [2023-11-28 23:30:37,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:30:35" (2/3) ... [2023-11-28 23:30:37,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f566798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:30:37, skipping insertion in model container [2023-11-28 23:30:37,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:30:37" (3/3) ... [2023-11-28 23:30:37,797 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2023-11-28 23:30:37,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:30:37,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-28 23:30:37,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:30:37,868 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;@234b8e34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:30:37,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-28 23:30:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 373 states have (on average 1.6916890080428955) internal successors, (631), 390 states have internal predecessors, (631), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-28 23:30:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-28 23:30:37,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:37,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:30:37,880 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 23:30:37,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash -595235965, now seen corresponding path program 1 times [2023-11-28 23:30:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535071737] [2023-11-28 23:30:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:38,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535071737] [2023-11-28 23:30:38,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 23:30:38,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810868318] [2023-11-28 23:30:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:38,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:38,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:38,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:38,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:30:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:38,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 23:30:38,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:38,333 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 23:30:38,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810868318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:38,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:38,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:30:38,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2736013] [2023-11-28 23:30:38,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:38,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:30:38,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:38,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:30:38,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:30:38,373 INFO L87 Difference]: Start difference. First operand has 410 states, 373 states have (on average 1.6916890080428955) internal successors, (631), 390 states have internal predecessors, (631), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) 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 23:30:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:38,453 INFO L93 Difference]: Finished difference Result 814 states and 1338 transitions. [2023-11-28 23:30:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:30:38,458 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 23:30:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:38,472 INFO L225 Difference]: With dead ends: 814 [2023-11-28 23:30:38,473 INFO L226 Difference]: Without dead ends: 393 [2023-11-28 23:30:38,478 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 23:30:38,482 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:38,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 581 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:30:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-28 23:30:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2023-11-28 23:30:38,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 365 states have (on average 1.5095890410958903) internal successors, (551), 379 states have internal predecessors, (551), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-28 23:30:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 571 transitions. [2023-11-28 23:30:38,545 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 571 transitions. Word has length 6 [2023-11-28 23:30:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:38,545 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 571 transitions. [2023-11-28 23:30:38,546 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 23:30:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 571 transitions. [2023-11-28 23:30:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-28 23:30:38,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:38,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:30:38,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:30:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 23:30:38,747 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 23:30:38,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash -595234043, now seen corresponding path program 1 times [2023-11-28 23:30:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142524419] [2023-11-28 23:30:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:38,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:38,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887794332] [2023-11-28 23:30:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:38,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:38,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:38,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:38,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:30:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:38,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:30:38,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:39,005 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 23:30:39,032 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 23:30:39,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:39,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:39,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142524419] [2023-11-28 23:30:39,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:39,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887794332] [2023-11-28 23:30:39,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887794332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:39,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:39,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:30:39,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968844508] [2023-11-28 23:30:39,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:39,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:30:39,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:39,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:30:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:30:39,036 INFO L87 Difference]: Start difference. First operand 393 states and 571 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 23:30:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:39,218 INFO L93 Difference]: Finished difference Result 757 states and 1114 transitions. [2023-11-28 23:30:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:30:39,219 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 23:30:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:39,225 INFO L225 Difference]: With dead ends: 757 [2023-11-28 23:30:39,225 INFO L226 Difference]: Without dead ends: 755 [2023-11-28 23:30:39,226 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 23:30:39,227 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 518 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:39,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1680 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:30:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-11-28 23:30:39,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 399. [2023-11-28 23:30:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 371 states have (on average 1.5040431266846361) internal successors, (558), 385 states have internal predecessors, (558), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-28 23:30:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 578 transitions. [2023-11-28 23:30:39,256 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 578 transitions. Word has length 6 [2023-11-28 23:30:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:39,257 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 578 transitions. [2023-11-28 23:30:39,257 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 23:30:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 578 transitions. [2023-11-28 23:30:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 23:30:39,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:39,261 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 23:30:39,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-28 23:30:39,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-28 23:30:39,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:30:39,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1582256787, now seen corresponding path program 1 times [2023-11-28 23:30:39,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:39,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403694308] [2023-11-28 23:30:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:39,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:39,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:39,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662756642] [2023-11-28 23:30:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:39,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:39,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:39,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:39,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:30:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:39,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:30:39,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:39,781 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 23:30:39,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403694308] [2023-11-28 23:30:39,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662756642] [2023-11-28 23:30:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662756642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:39,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:39,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:30:39,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953418218] [2023-11-28 23:30:39,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:39,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:30:39,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:30:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:30:39,785 INFO L87 Difference]: Start difference. First operand 399 states and 578 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 23:30:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:39,884 INFO L93 Difference]: Finished difference Result 812 states and 1179 transitions. [2023-11-28 23:30:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:30:39,884 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 23:30:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:39,888 INFO L225 Difference]: With dead ends: 812 [2023-11-28 23:30:39,888 INFO L226 Difference]: Without dead ends: 420 [2023-11-28 23:30:39,889 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 23:30:39,890 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 9 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:39,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1074 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:30:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-11-28 23:30:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2023-11-28 23:30:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 391 states have (on average 1.4782608695652173) internal successors, (578), 405 states have internal predecessors, (578), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-28 23:30:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 598 transitions. [2023-11-28 23:30:39,907 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 598 transitions. Word has length 62 [2023-11-28 23:30:39,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:39,908 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 598 transitions. [2023-11-28 23:30:39,908 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 23:30:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 598 transitions. [2023-11-28 23:30:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 23:30:39,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:39,912 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 23:30:39,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:30:40,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:40,118 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 23:30:40,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash -663322667, now seen corresponding path program 1 times [2023-11-28 23:30:40,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:40,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076914650] [2023-11-28 23:30:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:40,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:40,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:40,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006859719] [2023-11-28 23:30:40,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:40,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:40,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:40,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:40,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:30:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:40,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:30:40,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:40,413 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 23:30:40,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076914650] [2023-11-28 23:30:40,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006859719] [2023-11-28 23:30:40,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006859719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:40,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:40,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:30:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66678230] [2023-11-28 23:30:40,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:40,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:30:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:40,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:30:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:30:40,417 INFO L87 Difference]: Start difference. First operand 419 states and 598 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 23:30:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:40,529 INFO L93 Difference]: Finished difference Result 818 states and 1175 transitions. [2023-11-28 23:30:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:30:40,530 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 23:30:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:40,533 INFO L225 Difference]: With dead ends: 818 [2023-11-28 23:30:40,533 INFO L226 Difference]: Without dead ends: 406 [2023-11-28 23:30:40,534 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 23:30:40,535 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 165 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:40,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1459 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:30:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-28 23:30:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2023-11-28 23:30:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 377 states have (on average 1.4774535809018567) internal successors, (557), 391 states have internal predecessors, (557), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-28 23:30:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 577 transitions. [2023-11-28 23:30:40,552 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 577 transitions. Word has length 62 [2023-11-28 23:30:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:40,552 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 577 transitions. [2023-11-28 23:30:40,552 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 23:30:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 577 transitions. [2023-11-28 23:30:40,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 23:30:40,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:40,555 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 23:30:40,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:30:40,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:40,761 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 23:30:40,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1479376121, now seen corresponding path program 1 times [2023-11-28 23:30:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203617675] [2023-11-28 23:30:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:40,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:40,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170674521] [2023-11-28 23:30:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:40,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:40,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:40,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:40,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:30:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:41,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:30:41,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:41,154 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 23:30:41,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:41,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203617675] [2023-11-28 23:30:41,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:41,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170674521] [2023-11-28 23:30:41,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170674521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:41,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:41,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:30:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933816788] [2023-11-28 23:30:41,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:41,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:30:41,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:41,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:30:41,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:30:41,157 INFO L87 Difference]: Start difference. First operand 405 states and 577 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 23:30:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:41,241 INFO L93 Difference]: Finished difference Result 785 states and 1130 transitions. [2023-11-28 23:30:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:30:41,242 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 23:30:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:41,249 INFO L225 Difference]: With dead ends: 785 [2023-11-28 23:30:41,249 INFO L226 Difference]: Without dead ends: 783 [2023-11-28 23:30:41,249 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 23:30:41,250 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 489 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:41,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1639 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:30:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-11-28 23:30:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 771. [2023-11-28 23:30:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 733 states have (on average 1.4829467939972716) internal successors, (1087), 748 states have internal predecessors, (1087), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (21), 16 states have call predecessors, (21), 18 states have call successors, (21) [2023-11-28 23:30:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1126 transitions. [2023-11-28 23:30:41,281 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1126 transitions. Word has length 62 [2023-11-28 23:30:41,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:41,282 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1126 transitions. [2023-11-28 23:30:41,282 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 23:30:41,282 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1126 transitions. [2023-11-28 23:30:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-28 23:30:41,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:41,285 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 23:30:41,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:30:41,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:41,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:30:41,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1383980546, now seen corresponding path program 1 times [2023-11-28 23:30:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:41,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309758133] [2023-11-28 23:30:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:41,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:41,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:41,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588012190] [2023-11-28 23:30:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:41,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:41,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:41,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:41,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:30:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:41,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:30:41,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:41,830 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 23:30:41,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:41,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:41,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309758133] [2023-11-28 23:30:41,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:41,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588012190] [2023-11-28 23:30:41,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588012190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:41,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:41,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:30:41,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585732306] [2023-11-28 23:30:41,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:41,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:30:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:41,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:30:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:30:41,834 INFO L87 Difference]: Start difference. First operand 771 states and 1126 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 23:30:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:41,914 INFO L93 Difference]: Finished difference Result 1279 states and 1879 transitions. [2023-11-28 23:30:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:30:41,915 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 23:30:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:41,924 INFO L225 Difference]: With dead ends: 1279 [2023-11-28 23:30:41,924 INFO L226 Difference]: Without dead ends: 1277 [2023-11-28 23:30:41,925 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 23:30:41,926 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 422 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:41,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1649 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:30:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-28 23:30:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1269. [2023-11-28 23:30:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1225 states have (on average 1.4922448979591836) internal successors, (1828), 1241 states have internal predecessors, (1828), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-28 23:30:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1877 transitions. [2023-11-28 23:30:41,989 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1877 transitions. Word has length 63 [2023-11-28 23:30:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:41,990 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1877 transitions. [2023-11-28 23:30:41,990 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 23:30:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1877 transitions. [2023-11-28 23:30:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-28 23:30:41,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:41,992 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] [2023-11-28 23:30:41,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:30:42,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:42,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:30:42,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:42,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1493724209, now seen corresponding path program 1 times [2023-11-28 23:30:42,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:42,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022719337] [2023-11-28 23:30:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:42,563 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 23:30:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:42,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022719337] [2023-11-28 23:30:42,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022719337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:42,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:42,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:30:42,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113371460] [2023-11-28 23:30:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:42,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:30:42,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:30:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:30:42,566 INFO L87 Difference]: Start difference. First operand 1269 states and 1877 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 23:30:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:42,734 INFO L93 Difference]: Finished difference Result 2361 states and 3509 transitions. [2023-11-28 23:30:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:30:42,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2023-11-28 23:30:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:42,747 INFO L225 Difference]: With dead ends: 2361 [2023-11-28 23:30:42,747 INFO L226 Difference]: Without dead ends: 2008 [2023-11-28 23:30:42,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 23:30:42,749 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 512 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:42,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1666 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:30:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2023-11-28 23:30:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1269. [2023-11-28 23:30:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1225 states have (on average 1.4914285714285713) internal successors, (1827), 1241 states have internal predecessors, (1827), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-28 23:30:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1876 transitions. [2023-11-28 23:30:42,802 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1876 transitions. Word has length 69 [2023-11-28 23:30:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:42,803 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1876 transitions. [2023-11-28 23:30:42,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 23:30:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1876 transitions. [2023-11-28 23:30:42,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-28 23:30:42,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:42,804 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 23:30:42,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:30:42,805 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 23:30:42,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:42,805 INFO L85 PathProgramCache]: Analyzing trace with hash 602276963, now seen corresponding path program 1 times [2023-11-28 23:30:42,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:42,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942951161] [2023-11-28 23:30:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:42,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:42,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:42,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265153196] [2023-11-28 23:30:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:42,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:42,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:42,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:42,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:30:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:43,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:30:43,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:43,183 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 23:30:43,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:43,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:43,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942951161] [2023-11-28 23:30:43,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:43,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265153196] [2023-11-28 23:30:43,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265153196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:43,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:43,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:30:43,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751811188] [2023-11-28 23:30:43,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:43,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:30:43,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:43,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:30:43,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:30:43,187 INFO L87 Difference]: Start difference. First operand 1269 states and 1876 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 23:30:43,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:43,230 INFO L93 Difference]: Finished difference Result 1269 states and 1876 transitions. [2023-11-28 23:30:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:30:43,231 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 23:30:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:43,239 INFO L225 Difference]: With dead ends: 1269 [2023-11-28 23:30:43,239 INFO L226 Difference]: Without dead ends: 1268 [2023-11-28 23:30:43,240 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 23:30:43,240 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 492 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:43,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 553 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:30:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2023-11-28 23:30:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2023-11-28 23:30:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1225 states have (on average 1.489795918367347) internal successors, (1825), 1240 states have internal predecessors, (1825), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-28 23:30:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1874 transitions. [2023-11-28 23:30:43,287 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1874 transitions. Word has length 71 [2023-11-28 23:30:43,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:43,288 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1874 transitions. [2023-11-28 23:30:43,288 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 23:30:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1874 transitions. [2023-11-28 23:30:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 23:30:43,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:43,289 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 23:30:43,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:30:43,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-28 23:30:43,490 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 23:30:43,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1490716738, now seen corresponding path program 1 times [2023-11-28 23:30:43,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:43,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228353510] [2023-11-28 23:30:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:43,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:43,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:43,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148818366] [2023-11-28 23:30:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:43,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:43,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:43,516 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:43,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:30:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:43,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:30:43,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:43,869 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 23:30:43,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:43,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:43,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228353510] [2023-11-28 23:30:43,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:43,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148818366] [2023-11-28 23:30:43,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148818366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:43,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:43,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:30:43,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293482305] [2023-11-28 23:30:43,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:43,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:30:43,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:43,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:30:43,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:30:43,872 INFO L87 Difference]: Start difference. First operand 1268 states and 1874 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 23:30:43,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:43,932 INFO L93 Difference]: Finished difference Result 1295 states and 1894 transitions. [2023-11-28 23:30:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:30:43,933 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 23:30:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:43,941 INFO L225 Difference]: With dead ends: 1295 [2023-11-28 23:30:43,941 INFO L226 Difference]: Without dead ends: 1294 [2023-11-28 23:30:43,942 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 23:30:43,943 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 431 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:43,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1107 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:30:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2023-11-28 23:30:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1285. [2023-11-28 23:30:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1237 states have (on average 1.4858528698464026) internal successors, (1838), 1253 states have internal predecessors, (1838), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2023-11-28 23:30:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1893 transitions. [2023-11-28 23:30:43,997 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1893 transitions. Word has length 72 [2023-11-28 23:30:43,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:43,998 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1893 transitions. [2023-11-28 23:30:43,998 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 23:30:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1893 transitions. [2023-11-28 23:30:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-28 23:30:43,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:44,000 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 23:30:44,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-28 23:30:44,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-28 23:30:44,202 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 23:30:44,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:44,203 INFO L85 PathProgramCache]: Analyzing trace with hash -179740024, now seen corresponding path program 1 times [2023-11-28 23:30:44,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:44,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680023737] [2023-11-28 23:30:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:44,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:44,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:44,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097685137] [2023-11-28 23:30:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:44,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:44,239 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:44,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:30:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:44,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:30:44,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:44,689 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 23:30:44,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:30:44,917 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 23:30:44,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680023737] [2023-11-28 23:30:44,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:44,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097685137] [2023-11-28 23:30:44,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097685137] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:30:44,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:30:44,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-28 23:30:44,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623109751] [2023-11-28 23:30:44,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:30:44,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:30:44,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:44,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:30:44,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:30:44,921 INFO L87 Difference]: Start difference. First operand 1285 states and 1893 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 23:30:45,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:45,645 INFO L93 Difference]: Finished difference Result 3188 states and 4686 transitions. [2023-11-28 23:30:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 23:30:45,646 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 23:30:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:45,662 INFO L225 Difference]: With dead ends: 3188 [2023-11-28 23:30:45,662 INFO L226 Difference]: Without dead ends: 3186 [2023-11-28 23:30:45,664 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 23:30:45,664 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 2935 mSDsluCounter, 4820 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 5399 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:45,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2942 Valid, 5399 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:30:45,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2023-11-28 23:30:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 2936. [2023-11-28 23:30:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2838 states have (on average 1.4823819591261451) internal successors, (4207), 2856 states have internal predecessors, (4207), 65 states have call successors, (65), 26 states have call predecessors, (65), 20 states have return successors, (86), 54 states have call predecessors, (86), 65 states have call successors, (86) [2023-11-28 23:30:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4358 transitions. [2023-11-28 23:30:45,745 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4358 transitions. Word has length 79 [2023-11-28 23:30:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:45,746 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 4358 transitions. [2023-11-28 23:30:45,746 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 23:30:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4358 transitions. [2023-11-28 23:30:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-28 23:30:45,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:45,747 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 23:30:45,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:30:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:30:45,948 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 23:30:45,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1135681678, now seen corresponding path program 1 times [2023-11-28 23:30:45,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:45,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243144649] [2023-11-28 23:30:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:45,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:45,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:45,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634161621] [2023-11-28 23:30:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:45,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:45,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:45,995 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:45,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:30:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:46,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:30:46,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:46,555 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 23:30:46,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:46,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243144649] [2023-11-28 23:30:46,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634161621] [2023-11-28 23:30:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634161621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:46,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:30:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962012313] [2023-11-28 23:30:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:46,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:30:46,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:30:46,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:30:46,558 INFO L87 Difference]: Start difference. First operand 2936 states and 4358 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 23:30:46,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:46,781 INFO L93 Difference]: Finished difference Result 6364 states and 9496 transitions. [2023-11-28 23:30:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:30:46,782 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 23:30:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:46,802 INFO L225 Difference]: With dead ends: 6364 [2023-11-28 23:30:46,802 INFO L226 Difference]: Without dead ends: 3435 [2023-11-28 23:30:46,807 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 23:30:46,808 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 345 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:46,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1243 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:30:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2023-11-28 23:30:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3412. [2023-11-28 23:30:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3320 states have (on average 1.4960843373493975) internal successors, (4967), 3337 states have internal predecessors, (4967), 60 states have call successors, (60), 24 states have call predecessors, (60), 19 states have return successors, (81), 51 states have call predecessors, (81), 60 states have call successors, (81) [2023-11-28 23:30:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5108 transitions. [2023-11-28 23:30:46,922 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5108 transitions. Word has length 80 [2023-11-28 23:30:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:46,923 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 5108 transitions. [2023-11-28 23:30:46,923 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 23:30:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5108 transitions. [2023-11-28 23:30:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-28 23:30:46,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:46,925 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 23:30:46,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:30:47,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:47,125 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 23:30:47,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1254556124, now seen corresponding path program 1 times [2023-11-28 23:30:47,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:47,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859307461] [2023-11-28 23:30:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:47,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:47,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:47,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633060066] [2023-11-28 23:30:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:47,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:47,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:47,161 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:47,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:30:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:47,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:30:47,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:47,621 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 23:30:47,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:30:47,786 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 23:30:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859307461] [2023-11-28 23:30:47,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633060066] [2023-11-28 23:30:47,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633060066] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:30:47,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:30:47,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-28 23:30:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517050716] [2023-11-28 23:30:47,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:30:47,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:30:47,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:30:47,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:30:47,789 INFO L87 Difference]: Start difference. First operand 3412 states and 5108 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 23:30:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:48,235 INFO L93 Difference]: Finished difference Result 6168 states and 9214 transitions. [2023-11-28 23:30:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:30:48,236 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 23:30:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:48,262 INFO L225 Difference]: With dead ends: 6168 [2023-11-28 23:30:48,262 INFO L226 Difference]: Without dead ends: 6167 [2023-11-28 23:30:48,264 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 23:30:48,265 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 3222 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:48,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3231 Valid, 2611 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:30:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2023-11-28 23:30:48,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 5514. [2023-11-28 23:30:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5358 states have (on average 1.492161254199328) internal successors, (7995), 5375 states have internal predecessors, (7995), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2023-11-28 23:30:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8232 transitions. [2023-11-28 23:30:48,453 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8232 transitions. Word has length 88 [2023-11-28 23:30:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:48,453 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 8232 transitions. [2023-11-28 23:30:48,454 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 23:30:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8232 transitions. [2023-11-28 23:30:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-28 23:30:48,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:48,455 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 23:30:48,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:30:48,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:48,656 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 23:30:48,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1920423258, now seen corresponding path program 1 times [2023-11-28 23:30:48,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:48,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286567142] [2023-11-28 23:30:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:48,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:48,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:48,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788733418] [2023-11-28 23:30:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:48,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:48,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:48,698 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:48,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:30:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:49,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:30:49,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:49,143 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 23:30:49,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:49,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:49,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286567142] [2023-11-28 23:30:49,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:49,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788733418] [2023-11-28 23:30:49,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788733418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:49,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:49,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:30:49,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897430051] [2023-11-28 23:30:49,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:49,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:30:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:30:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:30:49,147 INFO L87 Difference]: Start difference. First operand 5514 states and 8232 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 23:30:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:30:49,401 INFO L93 Difference]: Finished difference Result 10896 states and 16272 transitions. [2023-11-28 23:30:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:30:49,402 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 23:30:49,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:30:49,428 INFO L225 Difference]: With dead ends: 10896 [2023-11-28 23:30:49,428 INFO L226 Difference]: Without dead ends: 5514 [2023-11-28 23:30:49,435 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 23:30:49,436 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 142 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:30:49,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2627 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:30:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2023-11-28 23:30:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 5514. [2023-11-28 23:30:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5358 states have (on average 1.4919746173945503) internal successors, (7994), 5374 states have internal predecessors, (7994), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2023-11-28 23:30:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8231 transitions. [2023-11-28 23:30:49,564 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8231 transitions. Word has length 112 [2023-11-28 23:30:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:30:49,564 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 8231 transitions. [2023-11-28 23:30:49,564 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 23:30:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8231 transitions. [2023-11-28 23:30:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-28 23:30:49,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:30:49,566 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 23:30:49,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:30:49,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:30:49,769 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 23:30:49,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:30:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2012946247, now seen corresponding path program 1 times [2023-11-28 23:30:49,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:30:49,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763192225] [2023-11-28 23:30:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:49,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:30:49,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:30:49,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801252902] [2023-11-28 23:30:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:30:49,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:30:49,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:30:49,810 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:30:49,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:30:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:30:50,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:30:50,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:30:50,162 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 23:30:50,395 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 23:30:50,401 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 23:30:50,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:30:50,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:30:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763192225] [2023-11-28 23:30:50,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:30:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801252902] [2023-11-28 23:30:50,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801252902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:30:50,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:30:50,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:30:50,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93456383] [2023-11-28 23:30:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:30:50,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:30:50,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:30:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:30:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:30:50,405 INFO L87 Difference]: Start difference. First operand 5514 states and 8231 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 23:30:54,538 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 23:30:58,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 23:31:02,654 WARN L539 Checker$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 23:31:06,682 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 23:31:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:06,769 INFO L93 Difference]: Finished difference Result 7388 states and 11026 transitions. [2023-11-28 23:31:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:31:06,769 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 23:31:06,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:06,787 INFO L225 Difference]: With dead ends: 7388 [2023-11-28 23:31:06,787 INFO L226 Difference]: Without dead ends: 7387 [2023-11-28 23:31:06,790 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 23:31:06,790 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 444 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:06,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1557 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2023-11-28 23:31:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2023-11-28 23:31:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 5315. [2023-11-28 23:31:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5150 states have (on average 1.4899029126213592) internal successors, (7673), 5170 states have internal predecessors, (7673), 109 states have call successors, (109), 56 states have call predecessors, (109), 44 states have return successors, (142), 88 states have call predecessors, (142), 109 states have call successors, (142) [2023-11-28 23:31:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 7924 transitions. [2023-11-28 23:31:06,993 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 7924 transitions. Word has length 117 [2023-11-28 23:31:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:06,993 INFO L495 AbstractCegarLoop]: Abstraction has 5315 states and 7924 transitions. [2023-11-28 23:31:06,994 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 23:31:06,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 7924 transitions. [2023-11-28 23:31:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-28 23:31:06,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:06,996 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 23:31:07,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-28 23:31:07,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:31:07,197 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 23:31:07,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2023176601, now seen corresponding path program 1 times [2023-11-28 23:31:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514914550] [2023-11-28 23:31:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:07,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282006852] [2023-11-28 23:31:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:07,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:07,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:07,239 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:07,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:31:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:07,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:31:07,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:07,825 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 23:31:07,834 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 23:31:07,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:31:07,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:07,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514914550] [2023-11-28 23:31:07,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282006852] [2023-11-28 23:31:07,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282006852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:31:07,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:31:07,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:31:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556699543] [2023-11-28 23:31:07,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:31:07,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:31:07,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:31:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:31:07,837 INFO L87 Difference]: Start difference. First operand 5315 states and 7924 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 23:31:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:08,381 INFO L93 Difference]: Finished difference Result 5584 states and 8287 transitions. [2023-11-28 23:31:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:31:08,382 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 23:31:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:08,390 INFO L225 Difference]: With dead ends: 5584 [2023-11-28 23:31:08,390 INFO L226 Difference]: Without dead ends: 5583 [2023-11-28 23:31:08,392 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 23:31:08,392 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 441 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:08,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 2067 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:31:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2023-11-28 23:31:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 5314. [2023-11-28 23:31:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5314 states, 5150 states have (on average 1.487766990291262) internal successors, (7662), 5169 states have internal predecessors, (7662), 109 states have call successors, (109), 56 states have call predecessors, (109), 44 states have return successors, (142), 88 states have call predecessors, (142), 109 states have call successors, (142) [2023-11-28 23:31:08,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 7913 transitions. [2023-11-28 23:31:08,509 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 7913 transitions. Word has length 118 [2023-11-28 23:31:08,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:08,509 INFO L495 AbstractCegarLoop]: Abstraction has 5314 states and 7913 transitions. [2023-11-28 23:31:08,509 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 23:31:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 7913 transitions. [2023-11-28 23:31:08,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-28 23:31:08,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:08,510 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 23:31:08,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:31:08,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:08,711 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 23:31:08,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:08,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1632876603, now seen corresponding path program 1 times [2023-11-28 23:31:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:08,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386219494] [2023-11-28 23:31:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:08,757 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:08,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089986710] [2023-11-28 23:31:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:08,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:08,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:08,758 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:08,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:31:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:09,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-28 23:31:09,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:09,288 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 23:31:09,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:31:09,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386219494] [2023-11-28 23:31:09,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089986710] [2023-11-28 23:31:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089986710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:31:09,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:31:09,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:31:09,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024531514] [2023-11-28 23:31:09,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:31:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:31:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:09,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:31:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:31:09,291 INFO L87 Difference]: Start difference. First operand 5314 states and 7913 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 23:31:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:09,562 INFO L93 Difference]: Finished difference Result 9151 states and 13645 transitions. [2023-11-28 23:31:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:31:09,562 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 23:31:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:09,570 INFO L225 Difference]: With dead ends: 9151 [2023-11-28 23:31:09,571 INFO L226 Difference]: Without dead ends: 3958 [2023-11-28 23:31:09,577 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 23:31:09,577 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 23 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:09,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4311 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:31:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2023-11-28 23:31:09,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3956. [2023-11-28 23:31:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3833 states have (on average 1.4925645708322464) internal successors, (5721), 3851 states have internal predecessors, (5721), 70 states have call successors, (70), 48 states have call predecessors, (70), 42 states have return successors, (82), 56 states have call predecessors, (82), 70 states have call successors, (82) [2023-11-28 23:31:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 5873 transitions. [2023-11-28 23:31:09,701 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 5873 transitions. Word has length 123 [2023-11-28 23:31:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:09,702 INFO L495 AbstractCegarLoop]: Abstraction has 3956 states and 5873 transitions. [2023-11-28 23:31:09,702 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 23:31:09,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 5873 transitions. [2023-11-28 23:31:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-28 23:31:09,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:09,704 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 23:31:09,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-28 23:31:09,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:31:09,909 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 23:31:09,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1197109681, now seen corresponding path program 1 times [2023-11-28 23:31:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:09,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057837273] [2023-11-28 23:31:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:09,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:09,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:09,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296602702] [2023-11-28 23:31:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:09,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:09,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:09,959 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:09,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:31:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:10,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:31:10,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:10,449 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 23:31:10,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:31:10,610 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 23:31:10,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:10,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057837273] [2023-11-28 23:31:10,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:10,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296602702] [2023-11-28 23:31:10,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296602702] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:31:10,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:31:10,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2023-11-28 23:31:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382576544] [2023-11-28 23:31:10,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:31:10,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:31:10,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:10,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:31:10,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:31:10,613 INFO L87 Difference]: Start difference. First operand 3956 states and 5873 transitions. Second operand has 14 states, 12 states have (on average 11.166666666666666) internal successors, (134), 14 states have internal predecessors, (134), 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 23:31:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:11,111 INFO L93 Difference]: Finished difference Result 7849 states and 11679 transitions. [2023-11-28 23:31:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:31:11,112 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 11.166666666666666) internal successors, (134), 14 states have internal predecessors, (134), 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 125 [2023-11-28 23:31:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:11,122 INFO L225 Difference]: With dead ends: 7849 [2023-11-28 23:31:11,122 INFO L226 Difference]: Without dead ends: 4028 [2023-11-28 23:31:11,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:31:11,129 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 51 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:11,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 4321 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:31:11,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2023-11-28 23:31:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4011. [2023-11-28 23:31:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4011 states, 3886 states have (on average 1.4930519814719505) internal successors, (5802), 3900 states have internal predecessors, (5802), 70 states have call successors, (70), 54 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 5950 transitions. [2023-11-28 23:31:11,304 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 5950 transitions. Word has length 125 [2023-11-28 23:31:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:11,304 INFO L495 AbstractCegarLoop]: Abstraction has 4011 states and 5950 transitions. [2023-11-28 23:31:11,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 11.166666666666666) internal successors, (134), 14 states have internal predecessors, (134), 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 23:31:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 5950 transitions. [2023-11-28 23:31:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-28 23:31:11,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:11,306 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] [2023-11-28 23:31:11,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:31:11,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:31:11,507 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 23:31:11,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:11,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1935202277, now seen corresponding path program 2 times [2023-11-28 23:31:11,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:11,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467832155] [2023-11-28 23:31:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:11,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:11,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625328897] [2023-11-28 23:31:11,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:31:11,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:11,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:11,556 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:11,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:31:11,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:31:11,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:31:11,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:31:11,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:11,870 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 23:31:11,874 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 23:31:11,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:31:11,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:11,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467832155] [2023-11-28 23:31:11,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:11,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625328897] [2023-11-28 23:31:11,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625328897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:31:11,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:31:11,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:31:11,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869710462] [2023-11-28 23:31:11,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:31:11,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:31:11,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:11,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:31:11,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:31:11,877 INFO L87 Difference]: Start difference. First operand 4011 states and 5950 transitions. Second operand has 3 states, 2 states have (on average 51.5) internal successors, (103), 3 states have internal predecessors, (103), 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 23:31:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:12,006 INFO L93 Difference]: Finished difference Result 4011 states and 5950 transitions. [2023-11-28 23:31:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:31:12,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 51.5) internal successors, (103), 3 states have internal predecessors, (103), 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 129 [2023-11-28 23:31:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:12,018 INFO L225 Difference]: With dead ends: 4011 [2023-11-28 23:31:12,018 INFO L226 Difference]: Without dead ends: 4010 [2023-11-28 23:31:12,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 23:31:12,021 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 2 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:12,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1099 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:31:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2023-11-28 23:31:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 4010. [2023-11-28 23:31:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 3886 states have (on average 1.4915079773546063) internal successors, (5796), 3899 states have internal predecessors, (5796), 70 states have call successors, (70), 54 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 5944 transitions. [2023-11-28 23:31:12,183 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 5944 transitions. Word has length 129 [2023-11-28 23:31:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:12,183 INFO L495 AbstractCegarLoop]: Abstraction has 4010 states and 5944 transitions. [2023-11-28 23:31:12,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 51.5) internal successors, (103), 3 states have internal predecessors, (103), 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 23:31:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 5944 transitions. [2023-11-28 23:31:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-28 23:31:12,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:12,185 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] [2023-11-28 23:31:12,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-28 23:31:12,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:31:12,386 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:31:12,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:12,387 INFO L85 PathProgramCache]: Analyzing trace with hash -138271454, now seen corresponding path program 1 times [2023-11-28 23:31:12,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:12,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364261174] [2023-11-28 23:31:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:12,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:12,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:12,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134509638] [2023-11-28 23:31:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:12,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:12,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:12,439 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:12,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:31:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:12,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-28 23:31:12,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:13,000 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 23:31:13,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:31:13,295 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 23:31:13,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364261174] [2023-11-28 23:31:13,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134509638] [2023-11-28 23:31:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134509638] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:31:13,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:31:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2023-11-28 23:31:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931577479] [2023-11-28 23:31:13,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:31:13,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 23:31:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 23:31:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-28 23:31:13,298 INFO L87 Difference]: Start difference. First operand 4010 states and 5944 transitions. Second operand has 21 states, 19 states have (on average 7.526315789473684) internal successors, (143), 21 states have internal predecessors, (143), 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 23:31:14,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:14,695 INFO L93 Difference]: Finished difference Result 7838 states and 11598 transitions. [2023-11-28 23:31:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-28 23:31:14,696 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.526315789473684) internal successors, (143), 21 states have internal predecessors, (143), 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 130 [2023-11-28 23:31:14,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:14,707 INFO L225 Difference]: With dead ends: 7838 [2023-11-28 23:31:14,707 INFO L226 Difference]: Without dead ends: 3820 [2023-11-28 23:31:14,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2023-11-28 23:31:14,714 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 153 mSDsluCounter, 6354 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 6818 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:14,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 6818 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:31:14,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2023-11-28 23:31:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3797. [2023-11-28 23:31:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3673 states have (on average 1.4682820582630003) internal successors, (5393), 3686 states have internal predecessors, (5393), 70 states have call successors, (70), 54 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 5541 transitions. [2023-11-28 23:31:14,892 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 5541 transitions. Word has length 130 [2023-11-28 23:31:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:14,893 INFO L495 AbstractCegarLoop]: Abstraction has 3797 states and 5541 transitions. [2023-11-28 23:31:14,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.526315789473684) internal successors, (143), 21 states have internal predecessors, (143), 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 23:31:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 5541 transitions. [2023-11-28 23:31:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-28 23:31:14,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:14,895 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] [2023-11-28 23:31:14,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 23:31:15,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:15,095 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:31:15,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1199487793, now seen corresponding path program 2 times [2023-11-28 23:31:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:15,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245794400] [2023-11-28 23:31:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:15,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:15,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240504320] [2023-11-28 23:31:15,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:31:15,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:15,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:15,156 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:15,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:31:15,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:31:15,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:31:15,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-28 23:31:15,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 11 proven. 124 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-28 23:31:16,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:31:16,498 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 23:31:16,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245794400] [2023-11-28 23:31:16,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:16,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240504320] [2023-11-28 23:31:16,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240504320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:31:16,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:31:16,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 28 [2023-11-28 23:31:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468222392] [2023-11-28 23:31:16,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:31:16,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-28 23:31:16,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-28 23:31:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2023-11-28 23:31:16,501 INFO L87 Difference]: Start difference. First operand 3797 states and 5541 transitions. Second operand has 28 states, 26 states have (on average 5.461538461538462) internal successors, (142), 28 states have internal predecessors, (142), 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 23:31:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:19,727 INFO L93 Difference]: Finished difference Result 7564 states and 11105 transitions. [2023-11-28 23:31:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-28 23:31:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.461538461538462) internal successors, (142), 28 states have internal predecessors, (142), 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 139 [2023-11-28 23:31:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:19,734 INFO L225 Difference]: With dead ends: 7564 [2023-11-28 23:31:19,734 INFO L226 Difference]: Without dead ends: 3891 [2023-11-28 23:31:19,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=632, Invalid=2790, Unknown=0, NotChecked=0, Total=3422 [2023-11-28 23:31:19,740 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 83 mSDsluCounter, 6605 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 7080 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:19,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 7080 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:31:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2023-11-28 23:31:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3851. [2023-11-28 23:31:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3727 states have (on average 1.4585457472497987) internal successors, (5436), 3738 states have internal predecessors, (5436), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5584 transitions. [2023-11-28 23:31:19,918 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5584 transitions. Word has length 139 [2023-11-28 23:31:19,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:19,919 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5584 transitions. [2023-11-28 23:31:19,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.461538461538462) internal successors, (142), 28 states have internal predecessors, (142), 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 23:31:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5584 transitions. [2023-11-28 23:31:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-28 23:31:19,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:19,920 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] [2023-11-28 23:31:19,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-28 23:31:20,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:20,121 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:31:20,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1115298142, now seen corresponding path program 3 times [2023-11-28 23:31:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734535693] [2023-11-28 23:31:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:20,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:20,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803813236] [2023-11-28 23:31:20,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:31:20,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:20,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:20,176 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:20,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:31:20,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 23:31:20,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:31:20,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:31:20,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:20,942 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 23:31:20,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:31:20,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734535693] [2023-11-28 23:31:20,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803813236] [2023-11-28 23:31:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803813236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:31:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:31:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:31:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942301057] [2023-11-28 23:31:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:31:20,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:31:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:31:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:31:20,945 INFO L87 Difference]: Start difference. First operand 3851 states and 5584 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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 23:31:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:21,298 INFO L93 Difference]: Finished difference Result 7693 states and 11173 transitions. [2023-11-28 23:31:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:31:21,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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 146 [2023-11-28 23:31:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:21,303 INFO L225 Difference]: With dead ends: 7693 [2023-11-28 23:31:21,303 INFO L226 Difference]: Without dead ends: 3886 [2023-11-28 23:31:21,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 23:31:21,308 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 12 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:21,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2140 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:31:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2023-11-28 23:31:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3879. [2023-11-28 23:31:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3879 states, 3755 states have (on average 1.455126498002663) internal successors, (5464), 3766 states have internal predecessors, (5464), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5612 transitions. [2023-11-28 23:31:21,486 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5612 transitions. Word has length 146 [2023-11-28 23:31:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:21,487 INFO L495 AbstractCegarLoop]: Abstraction has 3879 states and 5612 transitions. [2023-11-28 23:31:21,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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 23:31:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5612 transitions. [2023-11-28 23:31:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-28 23:31:21,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:21,489 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] [2023-11-28 23:31:21,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 23:31:21,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:21,689 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:31:21,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:21,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1473537399, now seen corresponding path program 1 times [2023-11-28 23:31:21,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:21,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944279253] [2023-11-28 23:31:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:21,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:21,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:21,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125410416] [2023-11-28 23:31:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:21,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:21,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:21,754 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:21,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 23:31:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:22,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:31:22,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:22,496 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 23:31:22,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:31:22,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944279253] [2023-11-28 23:31:22,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:22,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125410416] [2023-11-28 23:31:22,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125410416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:31:22,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:31:22,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:31:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034686201] [2023-11-28 23:31:22,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:31:22,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:31:22,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:22,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:31:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:31:22,498 INFO L87 Difference]: Start difference. First operand 3879 states and 5612 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 23:31:22,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:22,978 INFO L93 Difference]: Finished difference Result 7737 states and 11211 transitions. [2023-11-28 23:31:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:31:22,979 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 147 [2023-11-28 23:31:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:22,985 INFO L225 Difference]: With dead ends: 7737 [2023-11-28 23:31:22,986 INFO L226 Difference]: Without dead ends: 3914 [2023-11-28 23:31:22,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 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 23:31:22,992 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 17 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:22,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2526 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:31:22,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2023-11-28 23:31:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3907. [2023-11-28 23:31:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3907 states, 3783 states have (on average 1.4536082474226804) internal successors, (5499), 3794 states have internal predecessors, (5499), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3907 states to 3907 states and 5647 transitions. [2023-11-28 23:31:23,152 INFO L78 Accepts]: Start accepts. Automaton has 3907 states and 5647 transitions. Word has length 147 [2023-11-28 23:31:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:23,153 INFO L495 AbstractCegarLoop]: Abstraction has 3907 states and 5647 transitions. [2023-11-28 23:31:23,153 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 23:31:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3907 states and 5647 transitions. [2023-11-28 23:31:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-28 23:31:23,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:23,155 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 23:31:23,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-28 23:31:23,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-28 23:31:23,355 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:31:23,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1969365715, now seen corresponding path program 1 times [2023-11-28 23:31:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:23,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083161435] [2023-11-28 23:31:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:23,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:23,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:23,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021240151] [2023-11-28 23:31:23,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:23,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:23,411 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:23,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-28 23:31:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:23,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:31:23,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:24,092 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 23:31:24,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:31:24,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083161435] [2023-11-28 23:31:24,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:24,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021240151] [2023-11-28 23:31:24,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021240151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:31:24,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:31:24,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:31:24,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455357211] [2023-11-28 23:31:24,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:31:24,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:31:24,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:24,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:31:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:31:24,095 INFO L87 Difference]: Start difference. First operand 3907 states and 5647 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 23:31:24,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:24,532 INFO L93 Difference]: Finished difference Result 7806 states and 11290 transitions. [2023-11-28 23:31:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:31:24,533 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 23:31:24,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:24,539 INFO L225 Difference]: With dead ends: 7806 [2023-11-28 23:31:24,539 INFO L226 Difference]: Without dead ends: 3963 [2023-11-28 23:31:24,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:31:24,543 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 46 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:24,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2538 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:31:24,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2023-11-28 23:31:24,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 3921. [2023-11-28 23:31:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3797 states have (on average 1.4519357387411114) internal successors, (5513), 3808 states have internal predecessors, (5513), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 5661 transitions. [2023-11-28 23:31:24,716 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 5661 transitions. Word has length 148 [2023-11-28 23:31:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:24,716 INFO L495 AbstractCegarLoop]: Abstraction has 3921 states and 5661 transitions. [2023-11-28 23:31:24,716 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 23:31:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 5661 transitions. [2023-11-28 23:31:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-28 23:31:24,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:24,717 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 23:31:24,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-28 23:31:24,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-28 23:31:24,918 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 23:31:24,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash 782981833, now seen corresponding path program 1 times [2023-11-28 23:31:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:24,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606924470] [2023-11-28 23:31:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:24,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:24,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106148581] [2023-11-28 23:31:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:24,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:24,979 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:24,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-28 23:31:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:25,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-28 23:31:25,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:25,731 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 23:31:25,755 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 23:31:25,773 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 23:31:26,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:31:26,129 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 23:31:26,289 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 23:31:26,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:31:26,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606924470] [2023-11-28 23:31:26,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106148581] [2023-11-28 23:31:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106148581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:31:26,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:31:26,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:31:26,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182164863] [2023-11-28 23:31:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:31:26,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:31:26,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:26,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:31:26,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:31:26,293 INFO L87 Difference]: Start difference. First operand 3921 states and 5661 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 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 23:31:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:28,393 INFO L93 Difference]: Finished difference Result 8140 states and 11729 transitions. [2023-11-28 23:31:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:31:28,393 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 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 23:31:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:28,400 INFO L225 Difference]: With dead ends: 8140 [2023-11-28 23:31:28,401 INFO L226 Difference]: Without dead ends: 4267 [2023-11-28 23:31:28,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:31:28,407 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 763 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 3950 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:28,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 3950 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:31:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2023-11-28 23:31:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 3928. [2023-11-28 23:31:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3804 states have (on average 1.4511041009463723) internal successors, (5520), 3815 states have internal predecessors, (5520), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 5668 transitions. [2023-11-28 23:31:28,554 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 5668 transitions. Word has length 148 [2023-11-28 23:31:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:28,555 INFO L495 AbstractCegarLoop]: Abstraction has 3928 states and 5668 transitions. [2023-11-28 23:31:28,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 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 23:31:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 5668 transitions. [2023-11-28 23:31:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-28 23:31:28,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:28,556 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 23:31:28,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-28 23:31:28,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-28 23:31:28,756 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 23:31:28,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:28,757 INFO L85 PathProgramCache]: Analyzing trace with hash -608029913, now seen corresponding path program 1 times [2023-11-28 23:31:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:28,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603684316] [2023-11-28 23:31:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:28,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:28,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425634827] [2023-11-28 23:31:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:28,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:28,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:28,823 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:28,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-28 23:31:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:29,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 151 conjunts are in the unsatisfiable core [2023-11-28 23:31:29,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:29,988 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 23:31:30,306 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 23:31:30,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:31:30,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:30,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603684316] [2023-11-28 23:31:30,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:30,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425634827] [2023-11-28 23:31:30,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425634827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:31:30,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:31:30,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:31:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416487771] [2023-11-28 23:31:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:31:30,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:31:30,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:31:30,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:31:30,309 INFO L87 Difference]: Start difference. First operand 3928 states and 5668 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 23:31:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:31:30,909 INFO L93 Difference]: Finished difference Result 9072 states and 13156 transitions. [2023-11-28 23:31:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:31:30,910 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 23:31:30,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:31:30,917 INFO L225 Difference]: With dead ends: 9072 [2023-11-28 23:31:30,917 INFO L226 Difference]: Without dead ends: 5206 [2023-11-28 23:31:30,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:31:30,923 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 360 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:31:30,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2013 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:31:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2023-11-28 23:31:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 3949. [2023-11-28 23:31:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3825 states have (on average 1.4486274509803923) internal successors, (5541), 3836 states have internal predecessors, (5541), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:31:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 5689 transitions. [2023-11-28 23:31:31,155 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 5689 transitions. Word has length 148 [2023-11-28 23:31:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:31:31,155 INFO L495 AbstractCegarLoop]: Abstraction has 3949 states and 5689 transitions. [2023-11-28 23:31:31,155 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 23:31:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 5689 transitions. [2023-11-28 23:31:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-28 23:31:31,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:31:31,157 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 23:31:31,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-28 23:31:31,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-28 23:31:31,357 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 23:31:31,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:31:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2039574441, now seen corresponding path program 1 times [2023-11-28 23:31:31,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:31:31,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351507455] [2023-11-28 23:31:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:31,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:31:31,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:31:31,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043933849] [2023-11-28 23:31:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:31:31,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:31:31,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:31:31,414 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:31:31,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-28 23:31:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:31:32,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-28 23:31:32,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:31:32,647 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 23:31:32,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:31:33,297 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 23:31:33,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:31:33,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351507455] [2023-11-28 23:31:33,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:31:33,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043933849] [2023-11-28 23:31:33,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043933849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:31:33,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:31:33,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2023-11-28 23:31:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041802004] [2023-11-28 23:31:33,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:31:33,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-28 23:31:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:31:33,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-28 23:31:33,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2023-11-28 23:31:33,300 INFO L87 Difference]: Start difference. First operand 3949 states and 5689 transitions. Second operand has 32 states, 30 states have (on average 5.166666666666667) internal successors, (155), 32 states have internal predecessors, (155), 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 23:31:52,367 WARN L293 SmtUtils]: Spent 13.50s 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 23:32:04,427 WARN L293 SmtUtils]: Spent 8.12s 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 23:32:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:14,556 INFO L93 Difference]: Finished difference Result 7900 states and 11460 transitions. [2023-11-28 23:32:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-28 23:32:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 5.166666666666667) internal successors, (155), 32 states have internal predecessors, (155), 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 148 [2023-11-28 23:32:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:14,561 INFO L225 Difference]: With dead ends: 7900 [2023-11-28 23:32:14,562 INFO L226 Difference]: Without dead ends: 4068 [2023-11-28 23:32:14,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=1064, Invalid=3628, Unknown=0, NotChecked=0, Total=4692 [2023-11-28 23:32:14,566 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 116 mSDsluCounter, 7542 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 8017 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:14,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 8017 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 23:32:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2023-11-28 23:32:14,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 4045. [2023-11-28 23:32:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 3921 states have (on average 1.4376434583014537) internal successors, (5637), 3932 states have internal predecessors, (5637), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:32:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 5785 transitions. [2023-11-28 23:32:14,736 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 5785 transitions. Word has length 148 [2023-11-28 23:32:14,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:14,736 INFO L495 AbstractCegarLoop]: Abstraction has 4045 states and 5785 transitions. [2023-11-28 23:32:14,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 5.166666666666667) internal successors, (155), 32 states have internal predecessors, (155), 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 23:32:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 5785 transitions. [2023-11-28 23:32:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-28 23:32:14,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:14,737 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] [2023-11-28 23:32:14,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-28 23:32:14,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-28 23:32:14,938 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 23:32:14,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:14,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1841115159, now seen corresponding path program 2 times [2023-11-28 23:32:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:14,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566588365] [2023-11-28 23:32:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:14,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:14,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:14,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449133226] [2023-11-28 23:32:14,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:32:14,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:14,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:14,996 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:15,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-28 23:32:15,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:32:15,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:32:15,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 23:32:15,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:15,647 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 23:32:15,955 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 23:32:15,995 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 23:32:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2023-11-28 23:32:16,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:32:16,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566588365] [2023-11-28 23:32:16,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449133226] [2023-11-28 23:32:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449133226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:32:16,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:32:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-28 23:32:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57415688] [2023-11-28 23:32:16,410 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:32:16,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:32:16,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:32:16,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:32:16,411 INFO L87 Difference]: Start difference. First operand 4045 states and 5785 transitions. Second operand has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 23:32:20,689 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 23:32:24,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 23:32:28,883 WARN L539 Checker$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 23:32:32,933 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 23:32:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:33,010 INFO L93 Difference]: Finished difference Result 4379 states and 6233 transitions. [2023-11-28 23:32:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:32:33,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 160 [2023-11-28 23:32:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:33,015 INFO L225 Difference]: With dead ends: 4379 [2023-11-28 23:32:33,015 INFO L226 Difference]: Without dead ends: 4378 [2023-11-28 23:32:33,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:32:33,017 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 549 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 3797 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:33,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 3797 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 334 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2023-11-28 23:32:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2023-11-28 23:32:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 4044. [2023-11-28 23:32:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 3921 states have (on average 1.4361132364192808) internal successors, (5631), 3931 states have internal predecessors, (5631), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:32:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 5779 transitions. [2023-11-28 23:32:33,205 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 5779 transitions. Word has length 160 [2023-11-28 23:32:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:33,206 INFO L495 AbstractCegarLoop]: Abstraction has 4044 states and 5779 transitions. [2023-11-28 23:32:33,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 23:32:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 5779 transitions. [2023-11-28 23:32:33,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-28 23:32:33,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:33,208 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-28 23:32:33,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-28 23:32:33,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-28 23:32:33,409 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:33,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1960909864, now seen corresponding path program 1 times [2023-11-28 23:32:33,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:33,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535839406] [2023-11-28 23:32:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:33,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:33,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:33,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166502245] [2023-11-28 23:32:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:33,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:33,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:33,467 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:33,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-28 23:32:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:34,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:32:34,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-28 23:32:34,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:32:34,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:34,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535839406] [2023-11-28 23:32:34,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166502245] [2023-11-28 23:32:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166502245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:32:34,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:32:34,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:32:34,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477676104] [2023-11-28 23:32:34,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:32:34,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:32:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:32:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:32:34,479 INFO L87 Difference]: Start difference. First operand 4044 states and 5779 transitions. Second operand has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 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 23:32:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:34,651 INFO L93 Difference]: Finished difference Result 4044 states and 5779 transitions. [2023-11-28 23:32:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:32:34,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 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 222 [2023-11-28 23:32:34,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:34,656 INFO L225 Difference]: With dead ends: 4044 [2023-11-28 23:32:34,656 INFO L226 Difference]: Without dead ends: 4043 [2023-11-28 23:32:34,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 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 23:32:34,658 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 310 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:34,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 481 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:32:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4043 states. [2023-11-28 23:32:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4043 to 4043. [2023-11-28 23:32:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 3921 states have (on average 1.433307829635297) internal successors, (5620), 3930 states have internal predecessors, (5620), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-28 23:32:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 5768 transitions. [2023-11-28 23:32:34,855 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 5768 transitions. Word has length 222 [2023-11-28 23:32:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:34,855 INFO L495 AbstractCegarLoop]: Abstraction has 4043 states and 5768 transitions. [2023-11-28 23:32:34,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 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 23:32:34,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 5768 transitions. [2023-11-28 23:32:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-28 23:32:34,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:34,858 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-28 23:32:34,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-28 23:32:35,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-28 23:32:35,058 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:35,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash -658662286, now seen corresponding path program 1 times [2023-11-28 23:32:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:35,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065149328] [2023-11-28 23:32:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:35,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:35,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052585238] [2023-11-28 23:32:35,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:35,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:35,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:35,122 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:35,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-28 23:32:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:35,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:32:35,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-28 23:32:35,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:32:35,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065149328] [2023-11-28 23:32:35,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052585238] [2023-11-28 23:32:35,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052585238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:32:35,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:32:35,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:32:36,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321588675] [2023-11-28 23:32:36,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:32:36,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:32:36,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:36,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:32:36,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:32:36,001 INFO L87 Difference]: Start difference. First operand 4043 states and 5768 transitions. Second operand has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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 23:32:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:36,241 INFO L93 Difference]: Finished difference Result 5781 states and 8388 transitions. [2023-11-28 23:32:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:32:36,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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 223 [2023-11-28 23:32:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:36,248 INFO L225 Difference]: With dead ends: 5781 [2023-11-28 23:32:36,248 INFO L226 Difference]: Without dead ends: 5780 [2023-11-28 23:32:36,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 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 23:32:36,250 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 306 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:36,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 745 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:32:36,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2023-11-28 23:32:36,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5638. [2023-11-28 23:32:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5638 states, 5502 states have (on average 1.4580152671755726) internal successors, (8022), 5511 states have internal predecessors, (8022), 80 states have call successors, (80), 63 states have call predecessors, (80), 48 states have return successors, (88), 63 states have call predecessors, (88), 80 states have call successors, (88) [2023-11-28 23:32:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5638 states to 5638 states and 8190 transitions. [2023-11-28 23:32:36,522 INFO L78 Accepts]: Start accepts. Automaton has 5638 states and 8190 transitions. Word has length 223 [2023-11-28 23:32:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:36,522 INFO L495 AbstractCegarLoop]: Abstraction has 5638 states and 8190 transitions. [2023-11-28 23:32:36,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 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 23:32:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5638 states and 8190 transitions. [2023-11-28 23:32:36,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-28 23:32:36,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:36,527 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-28 23:32:36,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-28 23:32:36,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-28 23:32:36,727 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:36,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1121084698, now seen corresponding path program 1 times [2023-11-28 23:32:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803142243] [2023-11-28 23:32:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:36,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:36,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794775838] [2023-11-28 23:32:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:36,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:36,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:36,795 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:36,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-28 23:32:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:37,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:32:37,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2023-11-28 23:32:37,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:32:37,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803142243] [2023-11-28 23:32:37,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794775838] [2023-11-28 23:32:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794775838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:32:37,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:32:37,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:32:37,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551435750] [2023-11-28 23:32:37,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:32:37,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:32:37,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:32:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:32:37,516 INFO L87 Difference]: Start difference. First operand 5638 states and 8190 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-28 23:32:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:37,812 INFO L93 Difference]: Finished difference Result 10002 states and 14786 transitions. [2023-11-28 23:32:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:32:37,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 229 [2023-11-28 23:32:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:37,819 INFO L225 Difference]: With dead ends: 10002 [2023-11-28 23:32:37,819 INFO L226 Difference]: Without dead ends: 6184 [2023-11-28 23:32:37,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 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 23:32:37,823 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 9 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:37,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 912 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:32:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6184 states. [2023-11-28 23:32:38,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6184 to 6158. [2023-11-28 23:32:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 6022 states have (on average 1.4184656260378612) internal successors, (8542), 6031 states have internal predecessors, (8542), 80 states have call successors, (80), 63 states have call predecessors, (80), 48 states have return successors, (88), 63 states have call predecessors, (88), 80 states have call successors, (88) [2023-11-28 23:32:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 8710 transitions. [2023-11-28 23:32:38,071 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 8710 transitions. Word has length 229 [2023-11-28 23:32:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:38,072 INFO L495 AbstractCegarLoop]: Abstraction has 6158 states and 8710 transitions. [2023-11-28 23:32:38,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-28 23:32:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 8710 transitions. [2023-11-28 23:32:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-28 23:32:38,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:38,074 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-28 23:32:38,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-28 23:32:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:38,275 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 23:32:38,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1912965348, now seen corresponding path program 1 times [2023-11-28 23:32:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:38,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163456896] [2023-11-28 23:32:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:38,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435812835] [2023-11-28 23:32:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:38,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:38,347 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:38,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-28 23:32:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:39,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:32:39,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2023-11-28 23:32:39,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:32:39,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:39,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163456896] [2023-11-28 23:32:39,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:39,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435812835] [2023-11-28 23:32:39,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435812835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:32:39,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:32:39,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:32:39,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055937234] [2023-11-28 23:32:39,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:32:39,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:32:39,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:32:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:32:39,120 INFO L87 Difference]: Start difference. First operand 6158 states and 8710 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-28 23:32:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:39,422 INFO L93 Difference]: Finished difference Result 10050 states and 14520 transitions. [2023-11-28 23:32:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:32:39,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 229 [2023-11-28 23:32:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:39,430 INFO L225 Difference]: With dead ends: 10050 [2023-11-28 23:32:39,430 INFO L226 Difference]: Without dead ends: 5820 [2023-11-28 23:32:39,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 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 23:32:39,434 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 165 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:39,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1216 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:32:39,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2023-11-28 23:32:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5794. [2023-11-28 23:32:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5658 states have (on average 1.4132202191587133) internal successors, (7996), 5667 states have internal predecessors, (7996), 80 states have call successors, (80), 63 states have call predecessors, (80), 48 states have return successors, (88), 63 states have call predecessors, (88), 80 states have call successors, (88) [2023-11-28 23:32:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 8164 transitions. [2023-11-28 23:32:39,654 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 8164 transitions. Word has length 229 [2023-11-28 23:32:39,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:39,655 INFO L495 AbstractCegarLoop]: Abstraction has 5794 states and 8164 transitions. [2023-11-28 23:32:39,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-28 23:32:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 8164 transitions. [2023-11-28 23:32:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-28 23:32:39,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:39,657 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-28 23:32:39,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-28 23:32:39,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:39,858 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:39,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:39,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1128299378, now seen corresponding path program 1 times [2023-11-28 23:32:39,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:39,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251822278] [2023-11-28 23:32:39,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:39,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:39,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:39,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293290755] [2023-11-28 23:32:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:39,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:39,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:39,947 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:39,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-28 23:32:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:40,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:32:40,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 309 proven. 4 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-28 23:32:40,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:32:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2023-11-28 23:32:41,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251822278] [2023-11-28 23:32:41,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293290755] [2023-11-28 23:32:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293290755] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:32:41,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:32:41,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-28 23:32:41,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378527089] [2023-11-28 23:32:41,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:32:41,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:32:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:41,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:32:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:32:41,132 INFO L87 Difference]: Start difference. First operand 5794 states and 8164 transitions. Second operand has 15 states, 14 states have (on average 21.357142857142858) internal successors, (299), 14 states have internal predecessors, (299), 5 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-28 23:32:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:41,952 INFO L93 Difference]: Finished difference Result 12084 states and 17319 transitions. [2023-11-28 23:32:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 23:32:41,952 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 21.357142857142858) internal successors, (299), 14 states have internal predecessors, (299), 5 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 229 [2023-11-28 23:32:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:41,965 INFO L225 Difference]: With dead ends: 12084 [2023-11-28 23:32:41,965 INFO L226 Difference]: Without dead ends: 12083 [2023-11-28 23:32:41,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 446 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2023-11-28 23:32:41,969 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 3342 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 4274 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:41,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3344 Valid, 4274 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:32:41,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12083 states. [2023-11-28 23:32:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12083 to 11041. [2023-11-28 23:32:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11041 states, 10855 states have (on average 1.4334408106863197) internal successors, (15560), 10872 states have internal predecessors, (15560), 108 states have call successors, (108), 82 states have call predecessors, (108), 70 states have return successors, (116), 86 states have call predecessors, (116), 108 states have call successors, (116) [2023-11-28 23:32:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 15784 transitions. [2023-11-28 23:32:42,346 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 15784 transitions. Word has length 229 [2023-11-28 23:32:42,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:42,346 INFO L495 AbstractCegarLoop]: Abstraction has 11041 states and 15784 transitions. [2023-11-28 23:32:42,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 21.357142857142858) internal successors, (299), 14 states have internal predecessors, (299), 5 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-28 23:32:42,347 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 15784 transitions. [2023-11-28 23:32:42,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-28 23:32:42,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:42,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:42,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-28 23:32:42,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-28 23:32:42,549 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 23:32:42,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:42,550 INFO L85 PathProgramCache]: Analyzing trace with hash 154172111, now seen corresponding path program 1 times [2023-11-28 23:32:42,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:42,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503409615] [2023-11-28 23:32:42,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:42,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:42,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:42,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961917218] [2023-11-28 23:32:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:42,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:42,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:42,635 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:42,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-28 23:32:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:43,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:32:43,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-28 23:32:43,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:32:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-28 23:32:43,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:43,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503409615] [2023-11-28 23:32:43,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:43,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961917218] [2023-11-28 23:32:43,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961917218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:32:43,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:32:43,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 5 [2023-11-28 23:32:43,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138627547] [2023-11-28 23:32:43,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:32:43,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:32:43,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:32:43,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:32:43,876 INFO L87 Difference]: Start difference. First operand 11041 states and 15784 transitions. Second operand has 6 states, 5 states have (on average 71.6) internal successors, (358), 6 states have internal predecessors, (358), 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 23:32:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:44,475 INFO L93 Difference]: Finished difference Result 24057 states and 34792 transitions. [2023-11-28 23:32:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:32:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 71.6) internal successors, (358), 6 states have internal predecessors, (358), 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 231 [2023-11-28 23:32:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:44,501 INFO L225 Difference]: With dead ends: 24057 [2023-11-28 23:32:44,501 INFO L226 Difference]: Without dead ends: 24056 [2023-11-28 23:32:44,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 456 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 23:32:44,505 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1945 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:44,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1945 Valid, 1487 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:32:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24056 states. [2023-11-28 23:32:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24056 to 24040. [2023-11-28 23:32:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24040 states, 23740 states have (on average 1.4480202190395957) internal successors, (34376), 23766 states have internal predecessors, (34376), 183 states have call successors, (183), 130 states have call predecessors, (183), 109 states have return successors, (191), 143 states have call predecessors, (191), 183 states have call successors, (191) [2023-11-28 23:32:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24040 states to 24040 states and 34750 transitions. [2023-11-28 23:32:45,214 INFO L78 Accepts]: Start accepts. Automaton has 24040 states and 34750 transitions. Word has length 231 [2023-11-28 23:32:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:45,214 INFO L495 AbstractCegarLoop]: Abstraction has 24040 states and 34750 transitions. [2023-11-28 23:32:45,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 71.6) internal successors, (358), 6 states have internal predecessors, (358), 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 23:32:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 24040 states and 34750 transitions. [2023-11-28 23:32:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-28 23:32:45,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:45,217 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-28 23:32:45,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-28 23:32:45,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:45,417 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:45,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:45,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1193399645, now seen corresponding path program 1 times [2023-11-28 23:32:45,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:45,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384718881] [2023-11-28 23:32:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:45,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:45,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:45,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618577203] [2023-11-28 23:32:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:45,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:45,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:45,482 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:45,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-28 23:32:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:46,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:32:46,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-28 23:32:46,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:32:46,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384718881] [2023-11-28 23:32:46,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618577203] [2023-11-28 23:32:46,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618577203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:32:46,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:32:46,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:32:46,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070034009] [2023-11-28 23:32:46,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:32:46,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:32:46,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:46,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:32:46,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:32:46,368 INFO L87 Difference]: Start difference. First operand 24040 states and 34750 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 23:32:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:46,768 INFO L93 Difference]: Finished difference Result 30939 states and 44635 transitions. [2023-11-28 23:32:46,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:32:46,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 239 [2023-11-28 23:32:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:46,776 INFO L225 Difference]: With dead ends: 30939 [2023-11-28 23:32:46,776 INFO L226 Difference]: Without dead ends: 6422 [2023-11-28 23:32:46,788 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 23:32:46,789 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 14 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:46,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 925 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:32:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6422 states. [2023-11-28 23:32:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6422 to 6032. [2023-11-28 23:32:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6032 states, 5919 states have (on average 1.3933096806893057) internal successors, (8247), 5929 states have internal predecessors, (8247), 59 states have call successors, (59), 53 states have call predecessors, (59), 47 states have return successors, (67), 49 states have call predecessors, (67), 59 states have call successors, (67) [2023-11-28 23:32:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6032 states to 6032 states and 8373 transitions. [2023-11-28 23:32:47,085 INFO L78 Accepts]: Start accepts. Automaton has 6032 states and 8373 transitions. Word has length 239 [2023-11-28 23:32:47,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:47,086 INFO L495 AbstractCegarLoop]: Abstraction has 6032 states and 8373 transitions. [2023-11-28 23:32:47,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 23:32:47,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6032 states and 8373 transitions. [2023-11-28 23:32:47,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-28 23:32:47,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:47,089 INFO L195 NwaCegarLoop]: trace histogram [34, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:47,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-28 23:32:47,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:47,289 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:47,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:47,290 INFO L85 PathProgramCache]: Analyzing trace with hash 305280348, now seen corresponding path program 1 times [2023-11-28 23:32:47,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:47,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50786429] [2023-11-28 23:32:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:47,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:47,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549483056] [2023-11-28 23:32:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:47,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:47,356 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:47,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-28 23:32:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:48,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:32:48,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 416 proven. 8 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-28 23:32:48,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:32:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 73 proven. 10 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2023-11-28 23:32:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50786429] [2023-11-28 23:32:48,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549483056] [2023-11-28 23:32:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549483056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:32:48,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:32:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2023-11-28 23:32:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788358991] [2023-11-28 23:32:48,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:32:48,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 23:32:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 23:32:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-28 23:32:48,986 INFO L87 Difference]: Start difference. First operand 6032 states and 8373 transitions. Second operand has 22 states, 21 states have (on average 15.80952380952381) internal successors, (332), 20 states have internal predecessors, (332), 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 23:32:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:49,813 INFO L93 Difference]: Finished difference Result 10048 states and 14025 transitions. [2023-11-28 23:32:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-28 23:32:49,814 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.80952380952381) internal successors, (332), 20 states have internal predecessors, (332), 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 254 [2023-11-28 23:32:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:49,821 INFO L225 Difference]: With dead ends: 10048 [2023-11-28 23:32:49,821 INFO L226 Difference]: Without dead ends: 5612 [2023-11-28 23:32:49,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=392, Invalid=868, Unknown=0, NotChecked=0, Total=1260 [2023-11-28 23:32:49,825 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 2204 mSDsluCounter, 4251 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 5202 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:49,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2206 Valid, 5202 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:32:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5612 states. [2023-11-28 23:32:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5612 to 3839. [2023-11-28 23:32:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 3760 states have (on average 1.3853723404255318) internal successors, (5209), 3767 states have internal predecessors, (5209), 41 states have call successors, (41), 37 states have call predecessors, (41), 32 states have return successors, (43), 34 states have call predecessors, (43), 41 states have call successors, (43) [2023-11-28 23:32:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5293 transitions. [2023-11-28 23:32:50,025 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5293 transitions. Word has length 254 [2023-11-28 23:32:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:50,025 INFO L495 AbstractCegarLoop]: Abstraction has 3839 states and 5293 transitions. [2023-11-28 23:32:50,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.80952380952381) internal successors, (332), 20 states have internal predecessors, (332), 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 23:32:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5293 transitions. [2023-11-28 23:32:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-28 23:32:50,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:50,027 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-28 23:32:50,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-28 23:32:50,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:50,228 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:50,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash 960322223, now seen corresponding path program 1 times [2023-11-28 23:32:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103270756] [2023-11-28 23:32:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:50,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:50,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44383346] [2023-11-28 23:32:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:50,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:50,298 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:50,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-28 23:32:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:51,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:32:51,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:51,200 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 23:32:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-28 23:32:51,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:32:51,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:51,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103270756] [2023-11-28 23:32:51,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:51,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44383346] [2023-11-28 23:32:51,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44383346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:32:51,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:32:51,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:32:51,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728135103] [2023-11-28 23:32:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:32:51,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:32:51,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:51,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:32:51,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:32:51,359 INFO L87 Difference]: Start difference. First operand 3839 states and 5293 transitions. Second operand has 5 states, 4 states have (on average 48.75) internal successors, (195), 5 states have internal predecessors, (195), 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 23:32:51,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:51,768 INFO L93 Difference]: Finished difference Result 4418 states and 6036 transitions. [2023-11-28 23:32:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:32:51,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 48.75) internal successors, (195), 5 states have internal predecessors, (195), 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 256 [2023-11-28 23:32:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:51,773 INFO L225 Difference]: With dead ends: 4418 [2023-11-28 23:32:51,773 INFO L226 Difference]: Without dead ends: 4417 [2023-11-28 23:32:51,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 249 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 23:32:51,774 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 362 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:51,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1784 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:32:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2023-11-28 23:32:51,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 4316. [2023-11-28 23:32:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 4226 states have (on average 1.372692853762423) internal successors, (5801), 4235 states have internal predecessors, (5801), 47 states have call successors, (47), 42 states have call predecessors, (47), 37 states have return successors, (49), 38 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-28 23:32:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 5897 transitions. [2023-11-28 23:32:51,967 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 5897 transitions. Word has length 256 [2023-11-28 23:32:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:51,968 INFO L495 AbstractCegarLoop]: Abstraction has 4316 states and 5897 transitions. [2023-11-28 23:32:51,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 48.75) internal successors, (195), 5 states have internal predecessors, (195), 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 23:32:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 5897 transitions. [2023-11-28 23:32:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-28 23:32:51,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:51,970 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-28 23:32:51,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-28 23:32:52,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-28 23:32:52,171 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:52,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash -294780612, now seen corresponding path program 1 times [2023-11-28 23:32:52,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:52,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054078273] [2023-11-28 23:32:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:52,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:52,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:52,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478975970] [2023-11-28 23:32:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:52,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:52,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:52,242 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:52,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-28 23:32:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:53,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:32:53,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:53,277 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 23:32:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-28 23:32:53,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:32:53,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:53,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054078273] [2023-11-28 23:32:53,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:53,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478975970] [2023-11-28 23:32:53,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478975970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:32:53,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:32:53,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:32:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839025145] [2023-11-28 23:32:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:32:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:32:53,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:32:53,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:32:53,288 INFO L87 Difference]: Start difference. First operand 4316 states and 5897 transitions. Second operand has 6 states, 5 states have (on average 39.2) internal successors, (196), 6 states have internal predecessors, (196), 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 23:32:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:53,773 INFO L93 Difference]: Finished difference Result 4405 states and 6004 transitions. [2023-11-28 23:32:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:32:53,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 39.2) internal successors, (196), 6 states have internal predecessors, (196), 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 257 [2023-11-28 23:32:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:53,778 INFO L225 Difference]: With dead ends: 4405 [2023-11-28 23:32:53,778 INFO L226 Difference]: Without dead ends: 4379 [2023-11-28 23:32:53,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 249 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 23:32:53,780 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 713 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:53,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1545 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:32:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2023-11-28 23:32:53,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 4290. [2023-11-28 23:32:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4206 states have (on average 1.3701854493580599) internal successors, (5763), 4213 states have internal predecessors, (5763), 45 states have call successors, (45), 40 states have call predecessors, (45), 34 states have return successors, (45), 36 states have call predecessors, (45), 43 states have call successors, (45) [2023-11-28 23:32:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 5853 transitions. [2023-11-28 23:32:53,971 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 5853 transitions. Word has length 257 [2023-11-28 23:32:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:53,971 INFO L495 AbstractCegarLoop]: Abstraction has 4290 states and 5853 transitions. [2023-11-28 23:32:53,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 39.2) internal successors, (196), 6 states have internal predecessors, (196), 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 23:32:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 5853 transitions. [2023-11-28 23:32:53,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-11-28 23:32:53,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:53,974 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2023-11-28 23:32:53,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-28 23:32:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:54,174 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:54,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash -89514828, now seen corresponding path program 1 times [2023-11-28 23:32:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:54,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711810929] [2023-11-28 23:32:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:54,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:54,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561367526] [2023-11-28 23:32:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:54,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:54,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:54,249 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:54,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-28 23:32:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:55,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:32:55,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-28 23:32:55,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:32:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-28 23:32:55,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:55,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711810929] [2023-11-28 23:32:55,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:55,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561367526] [2023-11-28 23:32:55,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561367526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:32:55,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:32:55,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2023-11-28 23:32:55,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5165957] [2023-11-28 23:32:55,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:32:55,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:32:55,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:32:55,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:32:55,714 INFO L87 Difference]: Start difference. First operand 4290 states and 5853 transitions. Second operand has 12 states, 11 states have (on average 38.72727272727273) internal successors, (426), 12 states have internal predecessors, (426), 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 23:32:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:32:56,390 INFO L93 Difference]: Finished difference Result 8782 states and 11990 transitions. [2023-11-28 23:32:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:32:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 38.72727272727273) internal successors, (426), 12 states have internal predecessors, (426), 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 265 [2023-11-28 23:32:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:32:56,401 INFO L225 Difference]: With dead ends: 8782 [2023-11-28 23:32:56,401 INFO L226 Difference]: Without dead ends: 8781 [2023-11-28 23:32:56,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 518 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 23:32:56,404 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 3954 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3954 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:32:56,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3954 Valid, 2944 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:32:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8781 states. [2023-11-28 23:32:56,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8781 to 8214. [2023-11-28 23:32:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8214 states, 8130 states have (on average 1.3856088560885609) internal successors, (11265), 8137 states have internal predecessors, (11265), 45 states have call successors, (45), 40 states have call predecessors, (45), 34 states have return successors, (45), 36 states have call predecessors, (45), 43 states have call successors, (45) [2023-11-28 23:32:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 11355 transitions. [2023-11-28 23:32:56,781 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 11355 transitions. Word has length 265 [2023-11-28 23:32:56,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:32:56,781 INFO L495 AbstractCegarLoop]: Abstraction has 8214 states and 11355 transitions. [2023-11-28 23:32:56,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 38.72727272727273) internal successors, (426), 12 states have internal predecessors, (426), 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 23:32:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 11355 transitions. [2023-11-28 23:32:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-28 23:32:56,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:32:56,784 INFO L195 NwaCegarLoop]: trace histogram [68, 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, 1, 1, 1, 1, 1, 1, 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 23:32:56,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-28 23:32:56,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:56,984 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:32:56,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:32:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2057431605, now seen corresponding path program 1 times [2023-11-28 23:32:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:32:56,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87417075] [2023-11-28 23:32:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:56,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:32:57,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:32:57,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997265956] [2023-11-28 23:32:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:32:57,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:32:57,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:32:57,104 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:32:57,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-28 23:32:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:32:58,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 2406 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:32:58,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:32:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2708 backedges. 74 proven. 1954 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-11-28 23:32:58,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:32:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2708 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 2580 trivial. 0 not checked. [2023-11-28 23:32:58,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:32:58,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87417075] [2023-11-28 23:32:58,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:32:58,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997265956] [2023-11-28 23:32:58,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997265956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:32:58,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:32:58,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 23 [2023-11-28 23:32:58,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709649499] [2023-11-28 23:32:58,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:32:58,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 23:32:58,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:32:58,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 23:32:58,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:32:58,974 INFO L87 Difference]: Start difference. First operand 8214 states and 11355 transitions. Second operand has 24 states, 23 states have (on average 14.73913043478261) internal successors, (339), 20 states have internal predecessors, (339), 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 23:33:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:00,906 INFO L93 Difference]: Finished difference Result 26211 states and 36460 transitions. [2023-11-28 23:33:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-28 23:33:00,907 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 14.73913043478261) internal successors, (339), 20 states have internal predecessors, (339), 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 297 [2023-11-28 23:33:00,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:00,937 INFO L225 Difference]: With dead ends: 26211 [2023-11-28 23:33:00,937 INFO L226 Difference]: Without dead ends: 26135 [2023-11-28 23:33:00,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=589, Invalid=1303, Unknown=0, NotChecked=0, Total=1892 [2023-11-28 23:33:00,944 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 5031 mSDsluCounter, 7796 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5039 SdHoareTripleChecker+Valid, 8244 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:00,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5039 Valid, 8244 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:33:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26135 states. [2023-11-28 23:33:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26135 to 14530. [2023-11-28 23:33:01,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14530 states, 14374 states have (on average 1.3799916515931543) internal successors, (19836), 14388 states have internal predecessors, (19836), 90 states have call successors, (90), 68 states have call predecessors, (90), 61 states have return successors, (93), 73 states have call predecessors, (93), 88 states have call successors, (93) [2023-11-28 23:33:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14530 states to 14530 states and 20019 transitions. [2023-11-28 23:33:01,623 INFO L78 Accepts]: Start accepts. Automaton has 14530 states and 20019 transitions. Word has length 297 [2023-11-28 23:33:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:01,623 INFO L495 AbstractCegarLoop]: Abstraction has 14530 states and 20019 transitions. [2023-11-28 23:33:01,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 14.73913043478261) internal successors, (339), 20 states have internal predecessors, (339), 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 23:33:01,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14530 states and 20019 transitions. [2023-11-28 23:33:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-11-28 23:33:01,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:01,626 INFO L195 NwaCegarLoop]: trace histogram [56, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:33:01,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-28 23:33:01,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-28 23:33:01,826 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:33:01,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash 232326417, now seen corresponding path program 1 times [2023-11-28 23:33:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:01,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545950695] [2023-11-28 23:33:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:01,944 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:01,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433985842] [2023-11-28 23:33:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:01,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:01,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:01,945 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:01,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-28 23:33:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:03,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:33:03,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1933 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2023-11-28 23:33:03,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1933 backedges. 0 proven. 1289 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2023-11-28 23:33:04,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:04,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545950695] [2023-11-28 23:33:04,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:04,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433985842] [2023-11-28 23:33:04,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433985842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:04,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:33:04,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 21 [2023-11-28 23:33:04,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73760862] [2023-11-28 23:33:04,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:04,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 23:33:04,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 23:33:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=292, Unknown=0, NotChecked=0, Total=462 [2023-11-28 23:33:04,267 INFO L87 Difference]: Start difference. First operand 14530 states and 20019 transitions. Second operand has 22 states, 21 states have (on average 19.952380952380953) internal successors, (419), 22 states have internal predecessors, (419), 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 23:33:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:08,154 INFO L93 Difference]: Finished difference Result 63823 states and 88500 transitions. [2023-11-28 23:33:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-28 23:33:08,155 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 19.952380952380953) internal successors, (419), 22 states have internal predecessors, (419), 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 302 [2023-11-28 23:33:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:08,234 INFO L225 Difference]: With dead ends: 63823 [2023-11-28 23:33:08,234 INFO L226 Difference]: Without dead ends: 63820 [2023-11-28 23:33:08,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 591 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 23:33:08,244 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 10080 mSDsluCounter, 6527 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10116 SdHoareTripleChecker+Valid, 6968 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:08,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10116 Valid, 6968 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:33:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63820 states. [2023-11-28 23:33:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63820 to 20144. [2023-11-28 23:33:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20144 states, 19740 states have (on average 1.3513171225937184) internal successors, (26675), 19756 states have internal predecessors, (26675), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-28 23:33:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20144 states to 20144 states and 27170 transitions. [2023-11-28 23:33:09,689 INFO L78 Accepts]: Start accepts. Automaton has 20144 states and 27170 transitions. Word has length 302 [2023-11-28 23:33:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:09,690 INFO L495 AbstractCegarLoop]: Abstraction has 20144 states and 27170 transitions. [2023-11-28 23:33:09,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 19.952380952380953) internal successors, (419), 22 states have internal predecessors, (419), 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 23:33:09,690 INFO L276 IsEmpty]: Start isEmpty. Operand 20144 states and 27170 transitions. [2023-11-28 23:33:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-28 23:33:09,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:09,694 INFO L195 NwaCegarLoop]: trace histogram [34, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 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] [2023-11-28 23:33:09,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-28 23:33:09,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-28 23:33:09,894 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:33:09,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1977044970, now seen corresponding path program 2 times [2023-11-28 23:33:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:09,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412262700] [2023-11-28 23:33:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:10,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:10,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236615791] [2023-11-28 23:33:10,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:33:10,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:10,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:10,012 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:10,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-28 23:33:10,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:33:10,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:33:10,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:33:10,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:11,055 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 23:33:11,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:33:11,360 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 23:33:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1142 trivial. 0 not checked. [2023-11-28 23:33:11,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:33:11,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:11,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412262700] [2023-11-28 23:33:11,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:11,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236615791] [2023-11-28 23:33:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236615791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:11,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:11,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:33:11,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63737958] [2023-11-28 23:33:11,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:11,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:33:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:33:11,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:33:11,488 INFO L87 Difference]: Start difference. First operand 20144 states and 27170 transitions. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 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 23:33:13,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:13,823 INFO L93 Difference]: Finished difference Result 31555 states and 43104 transitions. [2023-11-28 23:33:13,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:33:13,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 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 325 [2023-11-28 23:33:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:13,847 INFO L225 Difference]: With dead ends: 31555 [2023-11-28 23:33:13,847 INFO L226 Difference]: Without dead ends: 20460 [2023-11-28 23:33:13,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:33:13,855 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1189 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:13,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 2862 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-28 23:33:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20460 states. [2023-11-28 23:33:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20460 to 20304. [2023-11-28 23:33:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20304 states, 19900 states have (on average 1.3497487437185929) internal successors, (26860), 19916 states have internal predecessors, (26860), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-28 23:33:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20304 states to 20304 states and 27355 transitions. [2023-11-28 23:33:15,044 INFO L78 Accepts]: Start accepts. Automaton has 20304 states and 27355 transitions. Word has length 325 [2023-11-28 23:33:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:15,045 INFO L495 AbstractCegarLoop]: Abstraction has 20304 states and 27355 transitions. [2023-11-28 23:33:15,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 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 23:33:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 20304 states and 27355 transitions. [2023-11-28 23:33:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-28 23:33:15,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:15,048 INFO L195 NwaCegarLoop]: trace histogram [34, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 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] [2023-11-28 23:33:15,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-28 23:33:15,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:15,249 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:33:15,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:15,249 INFO L85 PathProgramCache]: Analyzing trace with hash -45919336, now seen corresponding path program 1 times [2023-11-28 23:33:15,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:15,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913057975] [2023-11-28 23:33:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:15,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:15,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:15,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634786325] [2023-11-28 23:33:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:15,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:15,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:15,330 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:15,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-28 23:33:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:16,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:33:16,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1142 trivial. 0 not checked. [2023-11-28 23:33:16,525 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:33:16,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913057975] [2023-11-28 23:33:16,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634786325] [2023-11-28 23:33:16,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634786325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:16,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:16,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:33:16,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456891660] [2023-11-28 23:33:16,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:16,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:33:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:16,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:33:16,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:33:16,527 INFO L87 Difference]: Start difference. First operand 20304 states and 27355 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 23:33:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:17,926 INFO L93 Difference]: Finished difference Result 37349 states and 52094 transitions. [2023-11-28 23:33:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:33:17,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 325 [2023-11-28 23:33:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:17,959 INFO L225 Difference]: With dead ends: 37349 [2023-11-28 23:33:17,959 INFO L226 Difference]: Without dead ends: 26194 [2023-11-28 23:33:17,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 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 23:33:17,971 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 148 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:17,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1348 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:33:17,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26194 states. [2023-11-28 23:33:19,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26194 to 21454. [2023-11-28 23:33:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21454 states, 21050 states have (on average 1.3346793349168646) internal successors, (28095), 21066 states have internal predecessors, (28095), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-28 23:33:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21454 states to 21454 states and 28590 transitions. [2023-11-28 23:33:19,210 INFO L78 Accepts]: Start accepts. Automaton has 21454 states and 28590 transitions. Word has length 325 [2023-11-28 23:33:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:19,211 INFO L495 AbstractCegarLoop]: Abstraction has 21454 states and 28590 transitions. [2023-11-28 23:33:19,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 23:33:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 21454 states and 28590 transitions. [2023-11-28 23:33:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-11-28 23:33:19,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:19,215 INFO L195 NwaCegarLoop]: trace histogram [34, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 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] [2023-11-28 23:33:19,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-28 23:33:19,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:19,415 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:33:19,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:19,416 INFO L85 PathProgramCache]: Analyzing trace with hash -488760104, now seen corresponding path program 1 times [2023-11-28 23:33:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:19,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677188633] [2023-11-28 23:33:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:19,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:19,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679259635] [2023-11-28 23:33:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:19,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:19,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:19,492 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:19,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-28 23:33:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:20,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:33:20,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-28 23:33:21,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-28 23:33:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:21,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677188633] [2023-11-28 23:33:21,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:21,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679259635] [2023-11-28 23:33:21,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679259635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:21,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:33:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2023-11-28 23:33:21,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204838076] [2023-11-28 23:33:21,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:21,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 23:33:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 23:33:21,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:33:21,450 INFO L87 Difference]: Start difference. First operand 21454 states and 28590 transitions. Second operand has 24 states, 23 states have (on average 23.82608695652174) internal successors, (548), 24 states have internal predecessors, (548), 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 23:33:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:24,275 INFO L93 Difference]: Finished difference Result 37618 states and 50337 transitions. [2023-11-28 23:33:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 23:33:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 23.82608695652174) internal successors, (548), 24 states have internal predecessors, (548), 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 326 [2023-11-28 23:33:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:24,325 INFO L225 Difference]: With dead ends: 37618 [2023-11-28 23:33:24,325 INFO L226 Difference]: Without dead ends: 37617 [2023-11-28 23:33:24,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 628 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 23:33:24,331 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 11206 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11206 SdHoareTripleChecker+Valid, 5887 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:24,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11206 Valid, 5887 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:33:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37617 states. [2023-11-28 23:33:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37617 to 35914. [2023-11-28 23:33:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35914 states, 35510 states have (on average 1.3494508589129823) internal successors, (47919), 35526 states have internal predecessors, (47919), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-28 23:33:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35914 states to 35914 states and 48414 transitions. [2023-11-28 23:33:26,399 INFO L78 Accepts]: Start accepts. Automaton has 35914 states and 48414 transitions. Word has length 326 [2023-11-28 23:33:26,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:26,399 INFO L495 AbstractCegarLoop]: Abstraction has 35914 states and 48414 transitions. [2023-11-28 23:33:26,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 23.82608695652174) internal successors, (548), 24 states have internal predecessors, (548), 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 23:33:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 35914 states and 48414 transitions. [2023-11-28 23:33:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-11-28 23:33:26,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:26,407 INFO L195 NwaCegarLoop]: trace histogram [34, 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, 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] [2023-11-28 23:33:26,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-28 23:33:26,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:26,607 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:33:26,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:26,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1546772574, now seen corresponding path program 1 times [2023-11-28 23:33:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:26,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240743811] [2023-11-28 23:33:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:26,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:26,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:26,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157600890] [2023-11-28 23:33:26,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:26,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:26,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:26,695 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:26,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-28 23:33:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:27,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 23:33:27,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2023-11-28 23:33:27,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:33:27,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:27,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240743811] [2023-11-28 23:33:27,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:27,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157600890] [2023-11-28 23:33:27,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157600890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:27,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:27,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:33:27,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811772291] [2023-11-28 23:33:27,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:27,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:33:27,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:33:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:33:27,959 INFO L87 Difference]: Start difference. First operand 35914 states and 48414 transitions. Second operand has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 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 23:33:29,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:29,951 INFO L93 Difference]: Finished difference Result 64414 states and 87527 transitions. [2023-11-28 23:33:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:33:29,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 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 359 [2023-11-28 23:33:29,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:29,998 INFO L225 Difference]: With dead ends: 64414 [2023-11-28 23:33:29,998 INFO L226 Difference]: Without dead ends: 37709 [2023-11-28 23:33:30,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:33:30,017 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 30 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:30,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1987 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:33:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37709 states. [2023-11-28 23:33:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37709 to 37019. [2023-11-28 23:33:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37019 states, 36615 states have (on average 1.3419090536665301) internal successors, (49134), 36631 states have internal predecessors, (49134), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-28 23:33:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37019 states to 37019 states and 49629 transitions. [2023-11-28 23:33:32,040 INFO L78 Accepts]: Start accepts. Automaton has 37019 states and 49629 transitions. Word has length 359 [2023-11-28 23:33:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:32,040 INFO L495 AbstractCegarLoop]: Abstraction has 37019 states and 49629 transitions. [2023-11-28 23:33:32,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 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 23:33:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 37019 states and 49629 transitions. [2023-11-28 23:33:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-28 23:33:32,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:32,048 INFO L195 NwaCegarLoop]: trace histogram [34, 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, 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] [2023-11-28 23:33:32,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-11-28 23:33:32,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-28 23:33:32,248 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:33:32,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash -787499607, now seen corresponding path program 1 times [2023-11-28 23:33:32,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:32,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425518395] [2023-11-28 23:33:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:32,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:32,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:32,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009655886] [2023-11-28 23:33:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:32,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:32,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:32,364 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:32,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-28 23:33:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:33,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 1979 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:33:33,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:33,701 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 23:33:33,991 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 23:33:34,001 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 23:33:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-11-28 23:33:34,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-11-28 23:33:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425518395] [2023-11-28 23:33:34,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009655886] [2023-11-28 23:33:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009655886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:34,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:33:34,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-28 23:33:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709053604] [2023-11-28 23:33:34,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:34,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:33:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:33:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:33:34,208 INFO L87 Difference]: Start difference. First operand 37019 states and 49629 transitions. Second operand has 11 states, 11 states have (on average 30.0) internal successors, (330), 11 states have internal predecessors, (330), 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 23:33:36,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:36,276 INFO L93 Difference]: Finished difference Result 50446 states and 67779 transitions. [2023-11-28 23:33:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:33:36,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.0) internal successors, (330), 11 states have internal predecessors, (330), 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 360 [2023-11-28 23:33:36,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:36,318 INFO L225 Difference]: With dead ends: 50446 [2023-11-28 23:33:36,318 INFO L226 Difference]: Without dead ends: 39104 [2023-11-28 23:33:36,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 702 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 23:33:36,327 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1491 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:36,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 2598 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:33:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39104 states. [2023-11-28 23:33:38,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39104 to 37589. [2023-11-28 23:33:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37589 states, 37159 states have (on average 1.3410210177884228) internal successors, (49831), 37175 states have internal predecessors, (49831), 264 states have call successors, (264), 184 states have call predecessors, (264), 161 states have return successors, (277), 229 states have call predecessors, (277), 262 states have call successors, (277) [2023-11-28 23:33:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37589 states to 37589 states and 50372 transitions. [2023-11-28 23:33:38,234 INFO L78 Accepts]: Start accepts. Automaton has 37589 states and 50372 transitions. Word has length 360 [2023-11-28 23:33:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:38,235 INFO L495 AbstractCegarLoop]: Abstraction has 37589 states and 50372 transitions. [2023-11-28 23:33:38,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.0) internal successors, (330), 11 states have internal predecessors, (330), 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 23:33:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 37589 states and 50372 transitions. [2023-11-28 23:33:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-11-28 23:33:38,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:38,245 INFO L195 NwaCegarLoop]: trace histogram [34, 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, 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, 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 23:33:38,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-28 23:33:38,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-28 23:33:38,446 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:33:38,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -218932943, now seen corresponding path program 1 times [2023-11-28 23:33:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648547455] [2023-11-28 23:33:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:38,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467428101] [2023-11-28 23:33:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:38,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:38,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:38,605 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:38,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-28 23:33:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:40,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:33:40,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:40,066 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 23:33:40,343 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 23:33:40,474 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 23:33:40,606 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 23:33:40,617 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 23:33:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-11-28 23:33:40,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-11-28 23:33:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648547455] [2023-11-28 23:33:41,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467428101] [2023-11-28 23:33:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467428101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:41,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:33:41,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-28 23:33:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480289516] [2023-11-28 23:33:41,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:41,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:33:41,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:33:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:33:41,036 INFO L87 Difference]: Start difference. First operand 37589 states and 50372 transitions. Second operand has 19 states, 19 states have (on average 34.63157894736842) internal successors, (658), 19 states have internal predecessors, (658), 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 23:33:44,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:44,060 INFO L93 Difference]: Finished difference Result 87383 states and 117759 transitions. [2023-11-28 23:33:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 23:33:44,061 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 34.63157894736842) internal successors, (658), 19 states have internal predecessors, (658), 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 524 [2023-11-28 23:33:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:44,151 INFO L225 Difference]: With dead ends: 87383 [2023-11-28 23:33:44,151 INFO L226 Difference]: Without dead ends: 59018 [2023-11-28 23:33:44,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1022 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2023-11-28 23:33:44,170 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1721 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 5090 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:44,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 5090 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:33:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59018 states. [2023-11-28 23:33:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59018 to 52755. [2023-11-28 23:33:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52755 states, 51785 states have (on average 1.3322776865887804) internal successors, (68992), 51847 states have internal predecessors, (68992), 804 states have call successors, (804), 184 states have call predecessors, (804), 161 states have return successors, (854), 723 states have call predecessors, (854), 802 states have call successors, (854) [2023-11-28 23:33:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52755 states to 52755 states and 70650 transitions. [2023-11-28 23:33:47,136 INFO L78 Accepts]: Start accepts. Automaton has 52755 states and 70650 transitions. Word has length 524 [2023-11-28 23:33:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:33:47,137 INFO L495 AbstractCegarLoop]: Abstraction has 52755 states and 70650 transitions. [2023-11-28 23:33:47,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 34.63157894736842) internal successors, (658), 19 states have internal predecessors, (658), 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 23:33:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 52755 states and 70650 transitions. [2023-11-28 23:33:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-11-28 23:33:47,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:33:47,154 INFO L195 NwaCegarLoop]: trace histogram [136, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:47,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-28 23:33:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-28 23:33:47,355 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting alt_freeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:33:47,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2005632216, now seen corresponding path program 1 times [2023-11-28 23:33:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:47,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873221244] [2023-11-28 23:33:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:47,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:33:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378920601] [2023-11-28 23:33:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:47,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:47,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:47,570 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:47,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-28 23:33:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:49,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 4926 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-28 23:33:49,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 11316 backedges. 209 proven. 9615 refuted. 0 times theorem prover too weak. 1492 trivial. 0 not checked. [2023-11-28 23:33:50,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11316 backedges. 209 proven. 523 refuted. 0 times theorem prover too weak. 10584 trivial. 0 not checked. [2023-11-28 23:33:51,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:51,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873221244] [2023-11-28 23:33:51,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:33:51,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378920601] [2023-11-28 23:33:51,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378920601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:51,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:33:51,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 34] total 46 [2023-11-28 23:33:51,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250916769] [2023-11-28 23:33:51,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:51,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-28 23:33:51,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:51,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-28 23:33:51,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=1646, Unknown=0, NotChecked=0, Total=2162 [2023-11-28 23:33:51,486 INFO L87 Difference]: Start difference. First operand 52755 states and 70650 transitions. Second operand has 47 states, 46 states have (on average 16.52173913043478) internal successors, (760), 38 states have internal predecessors, (760), 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 23:33:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:33:58,016 INFO L93 Difference]: Finished difference Result 124061 states and 167502 transitions. [2023-11-28 23:33:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-28 23:33:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 16.52173913043478) internal successors, (760), 38 states have internal predecessors, (760), 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 616 [2023-11-28 23:33:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:33:58,191 INFO L225 Difference]: With dead ends: 124061 [2023-11-28 23:33:58,191 INFO L226 Difference]: Without dead ends: 123907 [2023-11-28 23:33:58,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1294 GetRequests, 1212 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2202, Invalid=4604, Unknown=0, NotChecked=0, Total=6806 [2023-11-28 23:33:58,220 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 12346 mSDsluCounter, 11347 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12362 SdHoareTripleChecker+Valid, 11795 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:33:58,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12362 Valid, 11795 Invalid, 1614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [619 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-28 23:33:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123907 states. [2023-11-28 23:34:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123907 to 40758. [2023-11-28 23:34:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40758 states, 39739 states have (on average 1.320440876720602) internal successors, (52473), 39798 states have internal predecessors, (52473), 839 states have call successors, (839), 196 states have call predecessors, (839), 176 states have return successors, (841), 763 states have call predecessors, (841), 839 states have call successors, (841) [2023-11-28 23:34:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40758 states to 40758 states and 54153 transitions. [2023-11-28 23:34:01,196 INFO L78 Accepts]: Start accepts. Automaton has 40758 states and 54153 transitions. Word has length 616 [2023-11-28 23:34:01,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:34:01,197 INFO L495 AbstractCegarLoop]: Abstraction has 40758 states and 54153 transitions. [2023-11-28 23:34:01,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 16.52173913043478) internal successors, (760), 38 states have internal predecessors, (760), 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 23:34:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 40758 states and 54153 transitions. [2023-11-28 23:34:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2023-11-28 23:34:01,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:34:01,221 INFO L195 NwaCegarLoop]: trace histogram [136, 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, 3, 3, 3, 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, 1] [2023-11-28 23:34:01,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-28 23:34:01,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-28 23:34:01,422 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:34:01,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:01,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2129066346, now seen corresponding path program 1 times [2023-11-28 23:34:01,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:01,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713268406] [2023-11-28 23:34:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:01,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:34:01,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051731583] [2023-11-28 23:34:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:01,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:01,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:01,658 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:01,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-28 23:34:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:03,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 5058 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 23:34:03,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 11345 backedges. 212 proven. 9614 refuted. 0 times theorem prover too weak. 1519 trivial. 0 not checked. [2023-11-28 23:34:04,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11345 backedges. 212 proven. 543 refuted. 0 times theorem prover too weak. 10590 trivial. 0 not checked. [2023-11-28 23:34:05,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713268406] [2023-11-28 23:34:05,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:34:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051731583] [2023-11-28 23:34:05,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051731583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:05,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:34:05,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 32] total 45 [2023-11-28 23:34:05,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579338638] [2023-11-28 23:34:05,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:05,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-28 23:34:05,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-28 23:34:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 23:34:05,440 INFO L87 Difference]: Start difference. First operand 40758 states and 54153 transitions. Second operand has 46 states, 45 states have (on average 17.22222222222222) internal successors, (775), 40 states have internal predecessors, (775), 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 23:34:16,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:34:16,906 INFO L93 Difference]: Finished difference Result 134188 states and 180870 transitions. [2023-11-28 23:34:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-28 23:34:16,907 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 17.22222222222222) internal successors, (775), 40 states have internal predecessors, (775), 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 630 [2023-11-28 23:34:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:34:17,084 INFO L225 Difference]: With dead ends: 134188 [2023-11-28 23:34:17,085 INFO L226 Difference]: Without dead ends: 134187 [2023-11-28 23:34:17,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1231 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2148 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2663, Invalid=6457, Unknown=0, NotChecked=0, Total=9120 [2023-11-28 23:34:17,102 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 15121 mSDsluCounter, 13823 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15137 SdHoareTripleChecker+Valid, 14271 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:34:17,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15137 Valid, 14271 Invalid, 2094 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [932 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-28 23:34:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134187 states. [2023-11-28 23:34:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134187 to 42098. [2023-11-28 23:34:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42098 states, 41024 states have (on average 1.3193252730109204) internal successors, (54124), 41084 states have internal predecessors, (54124), 877 states have call successors, (877), 215 states have call predecessors, (877), 193 states have return successors, (879), 798 states have call predecessors, (879), 877 states have call successors, (879) [2023-11-28 23:34:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42098 states to 42098 states and 55880 transitions. [2023-11-28 23:34:20,056 INFO L78 Accepts]: Start accepts. Automaton has 42098 states and 55880 transitions. Word has length 630 [2023-11-28 23:34:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:34:20,056 INFO L495 AbstractCegarLoop]: Abstraction has 42098 states and 55880 transitions. [2023-11-28 23:34:20,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 17.22222222222222) internal successors, (775), 40 states have internal predecessors, (775), 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 23:34:20,057 INFO L276 IsEmpty]: Start isEmpty. Operand 42098 states and 55880 transitions. [2023-11-28 23:34:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2023-11-28 23:34:20,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:34:20,073 INFO L195 NwaCegarLoop]: trace histogram [124, 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, 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] [2023-11-28 23:34:20,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-28 23:34:20,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-28 23:34:20,274 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:34:20,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash 878502513, now seen corresponding path program 2 times [2023-11-28 23:34:20,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:20,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481666017] [2023-11-28 23:34:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:20,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:20,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:34:20,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840853738] [2023-11-28 23:34:20,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:34:20,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:20,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:20,483 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:20,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-28 23:34:24,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:34:24,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:34:24,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:34:24,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10006 backedges. 2902 proven. 0 refuted. 0 times theorem prover too weak. 7104 trivial. 0 not checked. [2023-11-28 23:34:24,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:34:24,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:24,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481666017] [2023-11-28 23:34:24,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:34:24,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840853738] [2023-11-28 23:34:24,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840853738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:34:24,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:34:24,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:34:24,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138755374] [2023-11-28 23:34:24,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:34:24,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:34:24,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:24,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:34:24,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:34:24,407 INFO L87 Difference]: Start difference. First operand 42098 states and 55880 transitions. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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 23:34:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:34:27,520 INFO L93 Difference]: Finished difference Result 84976 states and 112950 transitions. [2023-11-28 23:34:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:34:27,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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 672 [2023-11-28 23:34:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:34:27,581 INFO L225 Difference]: With dead ends: 84976 [2023-11-28 23:34:27,581 INFO L226 Difference]: Without dead ends: 42944 [2023-11-28 23:34:27,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:34:27,608 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 13 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:34:27,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2808 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:34:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42944 states. [2023-11-28 23:34:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42944 to 42098. [2023-11-28 23:34:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42098 states, 41024 states have (on average 1.3158882605304212) internal successors, (53983), 41084 states have internal predecessors, (53983), 877 states have call successors, (877), 215 states have call predecessors, (877), 193 states have return successors, (879), 798 states have call predecessors, (879), 877 states have call successors, (879) [2023-11-28 23:34:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42098 states to 42098 states and 55739 transitions. [2023-11-28 23:34:30,366 INFO L78 Accepts]: Start accepts. Automaton has 42098 states and 55739 transitions. Word has length 672 [2023-11-28 23:34:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:34:30,367 INFO L495 AbstractCegarLoop]: Abstraction has 42098 states and 55739 transitions. [2023-11-28 23:34:30,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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 23:34:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 42098 states and 55739 transitions. [2023-11-28 23:34:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2023-11-28 23:34:30,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:34:30,381 INFO L195 NwaCegarLoop]: trace histogram [124, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:30,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-28 23:34:30,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-28 23:34:30,582 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:34:30,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash 150514513, now seen corresponding path program 1 times [2023-11-28 23:34:30,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089976073] [2023-11-28 23:34:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:30,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:30,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:34:30,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425255821] [2023-11-28 23:34:30,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:30,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:30,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:30,928 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:30,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-28 23:34:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:33,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 5385 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-28 23:34:33,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10012 backedges. 0 proven. 921 refuted. 0 times theorem prover too weak. 9091 trivial. 0 not checked. [2023-11-28 23:34:34,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10012 backedges. 0 proven. 8418 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2023-11-28 23:34:35,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089976073] [2023-11-28 23:34:35,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:34:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425255821] [2023-11-28 23:34:35,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425255821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:35,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:34:35,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 32] total 45 [2023-11-28 23:34:35,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832691785] [2023-11-28 23:34:35,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:35,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-28 23:34:35,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:35,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-28 23:34:35,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=1360, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 23:34:35,596 INFO L87 Difference]: Start difference. First operand 42098 states and 55739 transitions. Second operand has 46 states, 45 states have (on average 20.155555555555555) internal successors, (907), 46 states have internal predecessors, (907), 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 23:35:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:35:02,298 INFO L93 Difference]: Finished difference Result 327003 states and 439466 transitions. [2023-11-28 23:35:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-28 23:35:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 20.155555555555555) internal successors, (907), 46 states have internal predecessors, (907), 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 672 [2023-11-28 23:35:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:35:02,778 INFO L225 Difference]: With dead ends: 327003 [2023-11-28 23:35:02,778 INFO L226 Difference]: Without dead ends: 327000 [2023-11-28 23:35:02,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1407 GetRequests, 1319 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2843, Invalid=4989, Unknown=0, NotChecked=0, Total=7832 [2023-11-28 23:35:02,815 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 27525 mSDsluCounter, 13049 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27617 SdHoareTripleChecker+Valid, 13490 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1244 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:35:02,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27617 Valid, 13490 Invalid, 2222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1244 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:35:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327000 states. [2023-11-28 23:35:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327000 to 79879. [2023-11-28 23:35:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79879 states, 77261 states have (on average 1.2933433426955385) internal successors, (99925), 77344 states have internal predecessors, (99925), 1891 states have call successors, (1891), 771 states have call predecessors, (1891), 723 states have return successors, (1897), 1763 states have call predecessors, (1897), 1891 states have call successors, (1897) [2023-11-28 23:35:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79879 states to 79879 states and 103713 transitions. [2023-11-28 23:35:10,806 INFO L78 Accepts]: Start accepts. Automaton has 79879 states and 103713 transitions. Word has length 672 [2023-11-28 23:35:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:35:10,807 INFO L495 AbstractCegarLoop]: Abstraction has 79879 states and 103713 transitions. [2023-11-28 23:35:10,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 20.155555555555555) internal successors, (907), 46 states have internal predecessors, (907), 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 23:35:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 79879 states and 103713 transitions. [2023-11-28 23:35:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2023-11-28 23:35:10,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:35:10,843 INFO L195 NwaCegarLoop]: trace histogram [34, 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, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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] [2023-11-28 23:35:10,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-28 23:35:11,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:11,043 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:35:11,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1632421633, now seen corresponding path program 1 times [2023-11-28 23:35:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888645858] [2023-11-28 23:35:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:11,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:35:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115444299] [2023-11-28 23:35:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:11,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:11,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:11,300 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:11,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-28 23:35:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:13,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 4247 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-28 23:35:13,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:13,650 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 23:35:13,891 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 23:35:13,997 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 23:35:14,316 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 23:35:14,440 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 23:35:14,557 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 23:35:14,671 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 23:35:14,800 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 23:35:14,816 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 23:35:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2453 backedges. 0 proven. 1724 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-11-28 23:35:14,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:35:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2453 backedges. 0 proven. 1724 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-11-28 23:35:15,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:15,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888645858] [2023-11-28 23:35:15,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:35:15,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115444299] [2023-11-28 23:35:15,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115444299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:35:15,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:35:15,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2023-11-28 23:35:15,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912487281] [2023-11-28 23:35:15,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:35:15,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-28 23:35:15,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:15,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-28 23:35:15,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2023-11-28 23:35:15,713 INFO L87 Difference]: Start difference. First operand 79879 states and 103713 transitions. Second operand has 29 states, 29 states have (on average 31.79310344827586) internal successors, (922), 29 states have internal predecessors, (922), 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 23:35:24,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:35:24,365 INFO L93 Difference]: Finished difference Result 171948 states and 227330 transitions. [2023-11-28 23:35:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-28 23:35:24,366 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 31.79310344827586) internal successors, (922), 29 states have internal predecessors, (922), 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 852 [2023-11-28 23:35:24,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:35:24,601 INFO L225 Difference]: With dead ends: 171948 [2023-11-28 23:35:24,601 INFO L226 Difference]: Without dead ends: 154941 [2023-11-28 23:35:24,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1714 GetRequests, 1662 SyntacticMatches, 13 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2023-11-28 23:35:24,633 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 3878 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3940 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:35:24,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3940 Valid, 4727 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:35:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154941 states. [2023-11-28 23:35:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154941 to 131315. [2023-11-28 23:35:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131315 states, 126841 states have (on average 1.2986731419651374) internal successors, (164725), 127009 states have internal predecessors, (164725), 3747 states have call successors, (3747), 771 states have call predecessors, (3747), 723 states have return successors, (3763), 3534 states have call predecessors, (3763), 3747 states have call successors, (3763) [2023-11-28 23:35:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131315 states to 131315 states and 172235 transitions. [2023-11-28 23:35:33,392 INFO L78 Accepts]: Start accepts. Automaton has 131315 states and 172235 transitions. Word has length 852 [2023-11-28 23:35:33,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:35:33,392 INFO L495 AbstractCegarLoop]: Abstraction has 131315 states and 172235 transitions. [2023-11-28 23:35:33,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 31.79310344827586) internal successors, (922), 29 states have internal predecessors, (922), 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 23:35:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 131315 states and 172235 transitions. [2023-11-28 23:35:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2023-11-28 23:35:33,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:35:33,487 INFO L195 NwaCegarLoop]: trace histogram [34, 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, 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, 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] [2023-11-28 23:35:33,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-28 23:35:33,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:33,688 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:35:33,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1425524179, now seen corresponding path program 2 times [2023-11-28 23:35:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175842224] [2023-11-28 23:35:33,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:33,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:33,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:35:33,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956859305] [2023-11-28 23:35:33,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:35:33,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:33,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:33,985 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:33,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-28 23:35:35,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:35:35,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:35:35,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:35:35,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4421 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 4343 trivial. 0 not checked. [2023-11-28 23:35:35,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:35:35,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175842224] [2023-11-28 23:35:35,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:35:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956859305] [2023-11-28 23:35:35,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956859305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:35,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:36,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:35:36,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491914597] [2023-11-28 23:35:36,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:36,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:35:36,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:36,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:35:36,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:35:36,002 INFO L87 Difference]: Start difference. First operand 131315 states and 172235 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 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 23:35:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:35:43,782 INFO L93 Difference]: Finished difference Result 144962 states and 191140 transitions. [2023-11-28 23:35:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:35:43,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 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 1098 [2023-11-28 23:35:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:35:44,054 INFO L225 Difference]: With dead ends: 144962 [2023-11-28 23:35:44,054 INFO L226 Difference]: Without dead ends: 131783 [2023-11-28 23:35:44,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1097 GetRequests, 1093 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 23:35:44,073 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 12 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:35:44,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1557 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:35:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131783 states. [2023-11-28 23:35:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131783 to 131579. [2023-11-28 23:35:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131579 states, 127105 states have (on average 1.298572046733016) internal successors, (165055), 127273 states have internal predecessors, (165055), 3747 states have call successors, (3747), 771 states have call predecessors, (3747), 723 states have return successors, (3763), 3534 states have call predecessors, (3763), 3747 states have call successors, (3763) [2023-11-28 23:35:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131579 states to 131579 states and 172565 transitions. [2023-11-28 23:35:52,682 INFO L78 Accepts]: Start accepts. Automaton has 131579 states and 172565 transitions. Word has length 1098 [2023-11-28 23:35:52,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:35:52,683 INFO L495 AbstractCegarLoop]: Abstraction has 131579 states and 172565 transitions. [2023-11-28 23:35:52,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 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 23:35:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 131579 states and 172565 transitions. [2023-11-28 23:35:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2023-11-28 23:35:52,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:35:52,779 INFO L195 NwaCegarLoop]: trace histogram [34, 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, 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, 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] [2023-11-28 23:35:52,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-11-28 23:35:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:52,980 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:35:52,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:35:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1454497830, now seen corresponding path program 1 times [2023-11-28 23:35:52,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:35:52,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418170964] [2023-11-28 23:35:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:35:53,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:35:53,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024174234] [2023-11-28 23:35:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:35:53,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:35:53,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:35:53,276 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:35:53,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-28 23:35:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:35:55,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 5382 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:35:55,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:35:55,965 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 23:35:56,140 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 17 treesize of output 9 [2023-11-28 23:35:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4421 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 4338 trivial. 0 not checked. [2023-11-28 23:35:56,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:35:56,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:35:56,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418170964] [2023-11-28 23:35:56,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:35:56,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024174234] [2023-11-28 23:35:56,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024174234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:35:56,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:35:56,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:35:56,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779750600] [2023-11-28 23:35:56,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:35:56,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:35:56,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:35:56,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:35:56,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:35:56,153 INFO L87 Difference]: Start difference. First operand 131579 states and 172565 transitions. Second operand has 6 states, 5 states have (on average 60.6) internal successors, (303), 6 states have internal predecessors, (303), 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 23:36:00,239 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 23:36:04,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 23:36:08,278 WARN L539 Checker$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 23:36:12,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-28 23:36:16,334 WARN L539 Checker$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 23:36:20,377 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 23:36:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:27,752 INFO L93 Difference]: Finished difference Result 131579 states and 172565 transitions. [2023-11-28 23:36:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:36:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 60.6) internal successors, (303), 6 states have internal predecessors, (303), 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 1099 [2023-11-28 23:36:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:27,949 INFO L225 Difference]: With dead ends: 131579 [2023-11-28 23:36:27,950 INFO L226 Difference]: Without dead ends: 131541 [2023-11-28 23:36:27,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1100 GetRequests, 1092 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:36:27,975 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 358 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:27,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1303 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 6 Unknown, 0 Unchecked, 24.2s Time] [2023-11-28 23:36:28,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131541 states. [2023-11-28 23:36:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131541 to 106738. [2023-11-28 23:36:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106738 states, 102274 states have (on average 1.2906017169564112) internal successors, (131995), 102447 states have internal predecessors, (131995), 3742 states have call successors, (3742), 767 states have call predecessors, (3742), 719 states have return successors, (3758), 3523 states have call predecessors, (3758), 3742 states have call successors, (3758) [2023-11-28 23:36:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106738 states to 106738 states and 139495 transitions. [2023-11-28 23:36:35,473 INFO L78 Accepts]: Start accepts. Automaton has 106738 states and 139495 transitions. Word has length 1099 [2023-11-28 23:36:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:36:35,474 INFO L495 AbstractCegarLoop]: Abstraction has 106738 states and 139495 transitions. [2023-11-28 23:36:35,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 60.6) internal successors, (303), 6 states have internal predecessors, (303), 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 23:36:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 106738 states and 139495 transitions. [2023-11-28 23:36:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1186 [2023-11-28 23:36:35,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:36:35,584 INFO L195 NwaCegarLoop]: trace histogram [34, 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, 10, 10, 10, 10, 10, 10, 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] [2023-11-28 23:36:35,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-11-28 23:36:35,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:35,784 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 23:36:35,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:36:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1678218831, now seen corresponding path program 1 times [2023-11-28 23:36:35,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:36:35,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967631475] [2023-11-28 23:36:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:35,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:36:36,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:36:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814237548] [2023-11-28 23:36:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:36:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:36:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:36:36,100 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:36:36,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-28 23:36:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:36:39,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 6036 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:36:39,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:36:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6752 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 4332 trivial. 0 not checked. [2023-11-28 23:36:40,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:36:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6752 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 4332 trivial. 0 not checked. [2023-11-28 23:36:42,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:36:42,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967631475] [2023-11-28 23:36:42,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:36:42,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814237548] [2023-11-28 23:36:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814237548] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:36:42,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:36:42,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 47 [2023-11-28 23:36:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536403139] [2023-11-28 23:36:42,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:36:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-28 23:36:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:36:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-28 23:36:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-28 23:36:42,262 INFO L87 Difference]: Start difference. First operand 106738 states and 139495 transitions. Second operand has 48 states, 47 states have (on average 16.93617021276596) internal successors, (796), 48 states have internal predecessors, (796), 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 23:36:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:36:54,483 INFO L93 Difference]: Finished difference Result 111779 states and 146407 transitions. [2023-11-28 23:36:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-28 23:36:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 16.93617021276596) internal successors, (796), 48 states have internal predecessors, (796), 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 1185 [2023-11-28 23:36:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:36:54,657 INFO L225 Difference]: With dead ends: 111779 [2023-11-28 23:36:54,657 INFO L226 Difference]: Without dead ends: 111778 [2023-11-28 23:36:54,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2368 GetRequests, 2322 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-28 23:36:54,675 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 36430 mSDsluCounter, 10902 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36430 SdHoareTripleChecker+Valid, 11361 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:36:54,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36430 Valid, 11361 Invalid, 175 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:36:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111778 states. [2023-11-28 23:37:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111778 to 111778. [2023-11-28 23:37:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111778 states, 107314 states have (on average 1.2941741058948506) internal successors, (138883), 107487 states have internal predecessors, (138883), 3742 states have call successors, (3742), 767 states have call predecessors, (3742), 719 states have return successors, (3758), 3523 states have call predecessors, (3758), 3742 states have call successors, (3758) [2023-11-28 23:37:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111778 states to 111778 states and 146383 transitions. [2023-11-28 23:37:02,868 INFO L78 Accepts]: Start accepts. Automaton has 111778 states and 146383 transitions. Word has length 1185 [2023-11-28 23:37:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:37:02,869 INFO L495 AbstractCegarLoop]: Abstraction has 111778 states and 146383 transitions. [2023-11-28 23:37:02,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 16.93617021276596) internal successors, (796), 48 states have internal predecessors, (796), 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 23:37:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 111778 states and 146383 transitions. [2023-11-28 23:37:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1223 [2023-11-28 23:37:02,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:37:02,980 INFO L195 NwaCegarLoop]: trace histogram [272, 18, 18, 17, 17, 17, 17, 17, 17, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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] [2023-11-28 23:37:03,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-28 23:37:03,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:03,181 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:37:03,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:37:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash 516279114, now seen corresponding path program 1 times [2023-11-28 23:37:03,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:37:03,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711092675] [2023-11-28 23:37:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:03,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:37:03,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:37:03,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408337549] [2023-11-28 23:37:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:37:03,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:37:03,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:37:03,626 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:37:03,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-28 23:37:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:37:07,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 9698 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-28 23:37:07,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:37:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 45535 backedges. 494 proven. 41646 refuted. 0 times theorem prover too weak. 3395 trivial. 0 not checked. [2023-11-28 23:37:08,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:37:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 45535 backedges. 494 proven. 2875 refuted. 0 times theorem prover too weak. 42166 trivial. 0 not checked. [2023-11-28 23:37:12,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:37:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711092675] [2023-11-28 23:37:12,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:37:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408337549] [2023-11-28 23:37:12,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408337549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:37:12,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:37:12,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 64] total 85 [2023-11-28 23:37:12,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000477297] [2023-11-28 23:37:12,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:37:12,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-11-28 23:37:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:37:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-11-28 23:37:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1568, Invalid=5742, Unknown=0, NotChecked=0, Total=7310 [2023-11-28 23:37:12,067 INFO L87 Difference]: Start difference. First operand 111778 states and 146383 transitions. Second operand has 86 states, 85 states have (on average 18.341176470588234) internal successors, (1559), 72 states have internal predecessors, (1559), 33 states have call successors, (73), 34 states have call predecessors, (73), 36 states have return successors, (72), 32 states have call predecessors, (72), 33 states have call successors, (72) [2023-11-28 23:38:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:38:07,770 INFO L93 Difference]: Finished difference Result 357435 states and 481291 transitions. [2023-11-28 23:38:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-28 23:38:07,771 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 18.341176470588234) internal successors, (1559), 72 states have internal predecessors, (1559), 33 states have call successors, (73), 34 states have call predecessors, (73), 36 states have return successors, (72), 32 states have call predecessors, (72), 33 states have call successors, (72) Word has length 1222 [2023-11-28 23:38:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:38:08,425 INFO L225 Difference]: With dead ends: 357435 [2023-11-28 23:38:08,425 INFO L226 Difference]: Without dead ends: 357426 [2023-11-28 23:38:08,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2565 GetRequests, 2391 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7792 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8890, Invalid=21910, Unknown=0, NotChecked=0, Total=30800 [2023-11-28 23:38:08,469 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 42024 mSDsluCounter, 26021 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 1249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42060 SdHoareTripleChecker+Valid, 26457 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1249 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:38:08,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42060 Valid, 26457 Invalid, 3085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1249 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-28 23:38:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357426 states. [2023-11-28 23:38:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357426 to 118124. [2023-11-28 23:38:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118124 states, 113368 states have (on average 1.293671935643215) internal successors, (146661), 113536 states have internal predecessors, (146661), 3927 states have call successors, (3927), 878 states have call predecessors, (3927), 826 states have return successors, (3967), 3709 states have call predecessors, (3967), 3927 states have call successors, (3967) [2023-11-28 23:38:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118124 states to 118124 states and 154555 transitions. [2023-11-28 23:38:19,494 INFO L78 Accepts]: Start accepts. Automaton has 118124 states and 154555 transitions. Word has length 1222 [2023-11-28 23:38:19,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:38:19,495 INFO L495 AbstractCegarLoop]: Abstraction has 118124 states and 154555 transitions. [2023-11-28 23:38:19,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 18.341176470588234) internal successors, (1559), 72 states have internal predecessors, (1559), 33 states have call successors, (73), 34 states have call predecessors, (73), 36 states have return successors, (72), 32 states have call predecessors, (72), 33 states have call successors, (72) [2023-11-28 23:38:19,495 INFO L276 IsEmpty]: Start isEmpty. Operand 118124 states and 154555 transitions. [2023-11-28 23:38:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1413 [2023-11-28 23:38:19,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:38:19,628 INFO L195 NwaCegarLoop]: trace histogram [260, 23, 23, 23, 23, 23, 23, 22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:38:19,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-28 23:38:19,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:19,828 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:38:19,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:19,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1608669679, now seen corresponding path program 2 times [2023-11-28 23:38:19,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:19,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033931323] [2023-11-28 23:38:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:19,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:20,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:38:20,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448724596] [2023-11-28 23:38:20,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:38:20,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:20,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:20,316 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:38:20,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-28 23:38:23,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:38:23,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:38:23,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:38:23,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:38:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 45090 backedges. 6776 proven. 0 refuted. 0 times theorem prover too weak. 38314 trivial. 0 not checked. [2023-11-28 23:38:24,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:38:24,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033931323] [2023-11-28 23:38:24,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:38:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448724596] [2023-11-28 23:38:24,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448724596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:38:24,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:38:24,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:38:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133014790] [2023-11-28 23:38:24,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:38:24,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:38:24,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:38:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:38:24,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:38:24,233 INFO L87 Difference]: Start difference. First operand 118124 states and 154555 transitions. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 23:38:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:38:34,367 INFO L93 Difference]: Finished difference Result 239734 states and 314362 transitions. [2023-11-28 23:38:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:38:34,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 1412 [2023-11-28 23:38:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:38:34,547 INFO L225 Difference]: With dead ends: 239734 [2023-11-28 23:38:34,547 INFO L226 Difference]: Without dead ends: 121682 [2023-11-28 23:38:34,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1406 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 23:38:34,619 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 16 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:38:34,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2376 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:38:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121682 states. [2023-11-28 23:38:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121682 to 118124. [2023-11-28 23:38:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118124 states, 113368 states have (on average 1.293671935643215) internal successors, (146661), 113536 states have internal predecessors, (146661), 3927 states have call successors, (3927), 878 states have call predecessors, (3927), 826 states have return successors, (3967), 3709 states have call predecessors, (3967), 3927 states have call successors, (3967) [2023-11-28 23:38:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118124 states to 118124 states and 154555 transitions. [2023-11-28 23:38:44,556 INFO L78 Accepts]: Start accepts. Automaton has 118124 states and 154555 transitions. Word has length 1412 [2023-11-28 23:38:44,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:38:44,557 INFO L495 AbstractCegarLoop]: Abstraction has 118124 states and 154555 transitions. [2023-11-28 23:38:44,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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 23:38:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 118124 states and 154555 transitions. [2023-11-28 23:38:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2023-11-28 23:38:44,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:38:44,738 INFO L195 NwaCegarLoop]: trace histogram [260, 23, 23, 23, 23, 23, 23, 22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:38:44,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-11-28 23:38:44,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:44,939 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:38:44,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:38:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1785634137, now seen corresponding path program 1 times [2023-11-28 23:38:44,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:38:44,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998701937] [2023-11-28 23:38:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:44,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:38:45,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:38:45,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92433939] [2023-11-28 23:38:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:38:45,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:38:45,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:38:45,593 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:38:45,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-28 23:38:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:38:50,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 11369 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-28 23:38:50,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:38:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 45132 backedges. 0 proven. 4587 refuted. 0 times theorem prover too weak. 40545 trivial. 0 not checked. [2023-11-28 23:38:52,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:38:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 45132 backedges. 0 proven. 40918 refuted. 0 times theorem prover too weak. 4214 trivial. 0 not checked. [2023-11-28 23:38:56,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:38:56,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998701937] [2023-11-28 23:38:56,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:38:56,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92433939] [2023-11-28 23:38:56,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92433939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:38:56,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:38:56,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 68] total 93 [2023-11-28 23:38:56,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889207185] [2023-11-28 23:38:56,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:38:56,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-11-28 23:38:56,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:38:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-11-28 23:38:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2870, Invalid=5872, Unknown=0, NotChecked=0, Total=8742 [2023-11-28 23:38:56,574 INFO L87 Difference]: Start difference. First operand 118124 states and 154555 transitions. Second operand has 94 states, 93 states have (on average 20.591397849462364) internal successors, (1915), 94 states have internal predecessors, (1915), 47 states have call successors, (108), 48 states have call predecessors, (108), 47 states have return successors, (106), 47 states have call predecessors, (106), 47 states have call successors, (106) [2023-11-28 23:41:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:13,858 INFO L93 Difference]: Finished difference Result 691383 states and 926372 transitions. [2023-11-28 23:41:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-11-28 23:41:13,859 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 20.591397849462364) internal successors, (1915), 94 states have internal predecessors, (1915), 47 states have call successors, (108), 48 states have call predecessors, (108), 47 states have return successors, (106), 47 states have call predecessors, (106), 47 states have call successors, (106) Word has length 1428 [2023-11-28 23:41:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:15,112 INFO L225 Difference]: With dead ends: 691383 [2023-11-28 23:41:15,112 INFO L226 Difference]: Without dead ends: 691370 [2023-11-28 23:41:15,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2991 GetRequests, 2807 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8387 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=12161, Invalid=21879, Unknown=0, NotChecked=0, Total=34040 [2023-11-28 23:41:15,218 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 79411 mSDsluCounter, 30531 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 2435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79527 SdHoareTripleChecker+Valid, 30966 SdHoareTripleChecker+Invalid, 4322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2435 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:15,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79527 Valid, 30966 Invalid, 4322 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2435 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-28 23:41:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691370 states. [2023-11-28 23:41:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691370 to 239872. [2023-11-28 23:41:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239872 states, 229214 states have (on average 1.2829451953196576) internal successors, (294069), 229513 states have internal predecessors, (294069), 7627 states have call successors, (7627), 3128 states have call predecessors, (7627), 3028 states have return successors, (7993), 7230 states have call predecessors, (7993), 7627 states have call successors, (7993) [2023-11-28 23:41:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239872 states to 239872 states and 309689 transitions. [2023-11-28 23:41:42,708 INFO L78 Accepts]: Start accepts. Automaton has 239872 states and 309689 transitions. Word has length 1428 [2023-11-28 23:41:42,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:42,709 INFO L495 AbstractCegarLoop]: Abstraction has 239872 states and 309689 transitions. [2023-11-28 23:41:42,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 20.591397849462364) internal successors, (1915), 94 states have internal predecessors, (1915), 47 states have call successors, (108), 48 states have call predecessors, (108), 47 states have return successors, (106), 47 states have call predecessors, (106), 47 states have call successors, (106) [2023-11-28 23:41:42,710 INFO L276 IsEmpty]: Start isEmpty. Operand 239872 states and 309689 transitions. [2023-11-28 23:41:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2023-11-28 23:41:43,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:43,152 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 34, 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, 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] [2023-11-28 23:41:43,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-11-28 23:41:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:43,352 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:41:43,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 797460881, now seen corresponding path program 1 times [2023-11-28 23:41:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:43,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108372882] [2023-11-28 23:41:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:43,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:43,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:41:43,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932256677] [2023-11-28 23:41:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:43,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:43,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:43,670 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:43,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-28 23:41:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:47,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 7352 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-28 23:41:47,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14984 backedges. 0 proven. 10580 refuted. 0 times theorem prover too weak. 4404 trivial. 0 not checked. [2023-11-28 23:41:50,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14984 backedges. 0 proven. 10580 refuted. 0 times theorem prover too weak. 4404 trivial. 0 not checked. [2023-11-28 23:41:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:54,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108372882] [2023-11-28 23:41:54,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:41:54,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932256677] [2023-11-28 23:41:54,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932256677] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:54,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:41:54,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 48] total 95 [2023-11-28 23:41:54,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709999360] [2023-11-28 23:41:54,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:54,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-28 23:41:54,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-28 23:41:54,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-11-28 23:41:54,480 INFO L87 Difference]: Start difference. First operand 239872 states and 309689 transitions. Second operand has 96 states, 95 states have (on average 13.557894736842105) internal successors, (1288), 96 states have internal predecessors, (1288), 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 23:43:11,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:11,721 INFO L93 Difference]: Finished difference Result 249953 states and 323513 transitions. [2023-11-28 23:43:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-28 23:43:11,722 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 13.557894736842105) internal successors, (1288), 96 states have internal predecessors, (1288), 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 1445 [2023-11-28 23:43:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:12,139 INFO L225 Difference]: With dead ends: 249953 [2023-11-28 23:43:12,139 INFO L226 Difference]: Without dead ends: 249952 [2023-11-28 23:43:12,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2888 GetRequests, 2794 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-11-28 23:43:12,179 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 107580 mSDsluCounter, 22278 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107580 SdHoareTripleChecker+Valid, 22737 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:12,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107580 Valid, 22737 Invalid, 319 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [25 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:43:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249952 states. [2023-11-28 23:43:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249952 to 249952. [2023-11-28 23:43:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249952 states, 239294 states have (on average 1.2864718714217658) internal successors, (307845), 239593 states have internal predecessors, (307845), 7627 states have call successors, (7627), 3128 states have call predecessors, (7627), 3028 states have return successors, (7993), 7230 states have call predecessors, (7993), 7627 states have call successors, (7993) [2023-11-28 23:43:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249952 states to 249952 states and 323465 transitions. [2023-11-28 23:43:40,141 INFO L78 Accepts]: Start accepts. Automaton has 249952 states and 323465 transitions. Word has length 1445 [2023-11-28 23:43:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:40,142 INFO L495 AbstractCegarLoop]: Abstraction has 249952 states and 323465 transitions. [2023-11-28 23:43:40,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 13.557894736842105) internal successors, (1288), 96 states have internal predecessors, (1288), 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 23:43:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 249952 states and 323465 transitions. [2023-11-28 23:43:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1926 [2023-11-28 23:43:40,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:40,602 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 94, 94, 94, 94, 34, 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, 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] [2023-11-28 23:43:40,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-11-28 23:43:40,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-28 23:43:40,802 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-28 23:43:40,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1052068703, now seen corresponding path program 2 times [2023-11-28 23:43:40,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:40,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798701063] [2023-11-28 23:43:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:41,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:43:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581350890] [2023-11-28 23:43:41,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:43:41,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:41,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:41,216 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:41,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2c6b5f8-6d8d-46d5-91cc-61093032fc27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process