./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_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_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/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_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/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_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:55:18,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:55:18,275 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:55:18,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:55:18,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:55:18,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:55:18,307 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:55:18,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:55:18,308 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:55:18,308 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:55:18,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:55:18,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:55:18,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:55:18,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:55:18,311 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:55:18,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:55:18,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:55:18,313 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:55:18,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:55:18,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:55:18,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:55:18,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:55:18,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:55:18,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:55:18,317 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:55:18,317 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:55:18,317 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:55:18,318 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:55:18,318 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:55:18,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:55:18,319 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:55:18,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:55:18,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:55:18,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:55:18,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:55:18,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:55:18,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:55:18,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:55:18,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:55:18,322 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:55:18,322 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:55:18,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:55:18,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:55:18,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:55:18,323 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_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2023-11-29 03:55:18,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:55:18,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:55:18,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:55:18,584 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:55:18,585 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:55:18,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-29 03:55:21,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:55:21,675 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:55:21,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-29 03:55:21,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/data/cdc6cc092/80840c9d6d9e4520bb35898229ac2e45/FLAGdd9e84cec [2023-11-29 03:55:21,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/data/cdc6cc092/80840c9d6d9e4520bb35898229ac2e45 [2023-11-29 03:55:21,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:55:21,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:55:21,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:55:21,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:55:21,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:55:21,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:55:21" (1/1) ... [2023-11-29 03:55:21,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1453afae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:21, skipping insertion in model container [2023-11-29 03:55:21,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:55:21" (1/1) ... [2023-11-29 03:55:21,812 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:55:22,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:55:22,579 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:55:22,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:55:22,730 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:55:22,738 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:55:22,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22 WrapperNode [2023-11-29 03:55:22,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:55:22,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:55:22,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:55:22,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:55:22,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:22,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:22,860 INFO L138 Inliner]: procedures = 282, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1383 [2023-11-29 03:55:22,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:55:22,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:55:22,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:55:22,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:55:22,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:22,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:22,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:22,975 INFO L175 MemorySlicer]: Split 264 memory accesses to 5 slices as follows [2, 3, 220, 34, 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, 49, 4, 1]. [2023-11-29 03:55:22,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:22,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:23,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:23,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:23,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:23,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:23,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:55:23,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:55:23,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:55:23,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:55:23,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (1/1) ... [2023-11-29 03:55:23,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:55:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:23,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:55:23,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:55:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-29 03:55:23,188 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-29 03:55:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:55:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 03:55:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 03:55:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 03:55:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 03:55:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 03:55:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 03:55:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:55:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-29 03:55:23,191 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-29 03:55:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:55:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:55:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:55:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:55:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:55:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 03:55:23,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 03:55:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:55:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:55:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:55:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:55:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:55:23,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:55:23,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:55:23,195 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-29 03:55:23,195 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-29 03:55:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 03:55:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 03:55:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 03:55:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 03:55:23,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 03:55:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-29 03:55:23,197 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-29 03:55:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:55:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:55:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:55:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:55:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:55:23,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:55:23,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:55:23,409 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:55:23,412 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:55:24,764 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:55:24,816 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:55:24,816 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-29 03:55:24,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:55:24 BoogieIcfgContainer [2023-11-29 03:55:24,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:55:24,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:55:24,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:55:24,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:55:24,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:55:21" (1/3) ... [2023-11-29 03:55:24,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e42f1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:55:24, skipping insertion in model container [2023-11-29 03:55:24,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:22" (2/3) ... [2023-11-29 03:55:24,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e42f1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:55:24, skipping insertion in model container [2023-11-29 03:55:24,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:55:24" (3/3) ... [2023-11-29 03:55:24,827 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2023-11-29 03:55:24,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:55:24,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 03:55:24,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:55:24,916 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;@37c8ddc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:55:24,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-29 03:55:24,923 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) [2023-11-29 03:55:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:55:24,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:24,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:55:24,931 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)] === [2023-11-29 03:55:24,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash -595235965, now seen corresponding path program 1 times [2023-11-29 03:55:24,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:24,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958739457] [2023-11-29 03:55:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:24,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:25,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:25,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958739457] [2023-11-29 03:55:25,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 03:55:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376508664] [2023-11-29 03:55:25,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:25,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:25,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:25,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:25,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:55:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:25,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:55:25,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:25,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:25,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376508664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:25,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:25,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:55:25,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134689926] [2023-11-29 03:55:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:25,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:55:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:55:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:55:25,373 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) [2023-11-29 03:55:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:25,459 INFO L93 Difference]: Finished difference Result 814 states and 1338 transitions. [2023-11-29 03:55:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:55:25,461 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 [2023-11-29 03:55:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:25,475 INFO L225 Difference]: With dead ends: 814 [2023-11-29 03:55:25,475 INFO L226 Difference]: Without dead ends: 393 [2023-11-29 03:55:25,481 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 [2023-11-29 03:55:25,485 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 [2023-11-29 03:55:25,486 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] [2023-11-29 03:55:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-29 03:55:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2023-11-29 03:55:25,546 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) [2023-11-29 03:55:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 571 transitions. [2023-11-29 03:55:25,551 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 571 transitions. Word has length 6 [2023-11-29 03:55:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:25,552 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 571 transitions. [2023-11-29 03:55:25,552 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) [2023-11-29 03:55:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 571 transitions. [2023-11-29 03:55:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:55:25,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:25,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:55:25,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:55:25,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 03:55:25,754 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)] === [2023-11-29 03:55:25,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash -595234043, now seen corresponding path program 1 times [2023-11-29 03:55:25,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:25,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670261405] [2023-11-29 03:55:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:25,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:25,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639606491] [2023-11-29 03:55:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:25,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:25,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:25,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:25,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:55:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:25,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:25,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:26,030 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 [2023-11-29 03:55:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:26,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:26,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670261405] [2023-11-29 03:55:26,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:26,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639606491] [2023-11-29 03:55:26,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639606491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:26,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:26,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:55:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474823662] [2023-11-29 03:55:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:26,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:26,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:26,066 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) [2023-11-29 03:55:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:26,262 INFO L93 Difference]: Finished difference Result 757 states and 1114 transitions. [2023-11-29 03:55:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:26,262 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 [2023-11-29 03:55:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:26,269 INFO L225 Difference]: With dead ends: 757 [2023-11-29 03:55:26,269 INFO L226 Difference]: Without dead ends: 755 [2023-11-29 03:55:26,270 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 [2023-11-29 03:55:26,272 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 [2023-11-29 03:55:26,272 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] [2023-11-29 03:55:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-11-29 03:55:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 399. [2023-11-29 03:55:26,298 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) [2023-11-29 03:55:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 578 transitions. [2023-11-29 03:55:26,302 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 578 transitions. Word has length 6 [2023-11-29 03:55:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:26,302 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 578 transitions. [2023-11-29 03:55:26,302 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) [2023-11-29 03:55:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 578 transitions. [2023-11-29 03:55:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 03:55:26,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:26,306 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] [2023-11-29 03:55:26,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:55:26,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:26,507 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)] === [2023-11-29 03:55:26,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1582256787, now seen corresponding path program 1 times [2023-11-29 03:55:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:26,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318138452] [2023-11-29 03:55:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:26,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:26,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304903201] [2023-11-29 03:55:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:26,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:26,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:26,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:26,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:55:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:26,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:55:26,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:26,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318138452] [2023-11-29 03:55:26,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304903201] [2023-11-29 03:55:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304903201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:26,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:26,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757652814] [2023-11-29 03:55:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:26,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:26,838 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) [2023-11-29 03:55:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:26,946 INFO L93 Difference]: Finished difference Result 812 states and 1179 transitions. [2023-11-29 03:55:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:26,947 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 [2023-11-29 03:55:26,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:26,950 INFO L225 Difference]: With dead ends: 812 [2023-11-29 03:55:26,951 INFO L226 Difference]: Without dead ends: 420 [2023-11-29 03:55:26,952 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 [2023-11-29 03:55:26,953 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 [2023-11-29 03:55:26,954 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] [2023-11-29 03:55:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-11-29 03:55:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2023-11-29 03:55:26,968 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) [2023-11-29 03:55:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 598 transitions. [2023-11-29 03:55:26,973 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 598 transitions. Word has length 62 [2023-11-29 03:55:26,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:26,973 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 598 transitions. [2023-11-29 03:55:26,974 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) [2023-11-29 03:55:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 598 transitions. [2023-11-29 03:55:26,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 03:55:26,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:26,978 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] [2023-11-29 03:55:26,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:55:27,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:27,181 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)] === [2023-11-29 03:55:27,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash -663322667, now seen corresponding path program 1 times [2023-11-29 03:55:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508121594] [2023-11-29 03:55:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:27,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:27,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963889415] [2023-11-29 03:55:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:27,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:27,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:27,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:27,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:55:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:27,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:55:27,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:27,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:27,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:27,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508121594] [2023-11-29 03:55:27,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:27,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963889415] [2023-11-29 03:55:27,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963889415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:27,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:27,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:55:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662105150] [2023-11-29 03:55:27,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:27,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:27,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:27,502 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) [2023-11-29 03:55:27,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:27,616 INFO L93 Difference]: Finished difference Result 818 states and 1175 transitions. [2023-11-29 03:55:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:27,616 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 [2023-11-29 03:55:27,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:27,620 INFO L225 Difference]: With dead ends: 818 [2023-11-29 03:55:27,620 INFO L226 Difference]: Without dead ends: 406 [2023-11-29 03:55:27,621 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 [2023-11-29 03:55:27,622 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 [2023-11-29 03:55:27,623 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] [2023-11-29 03:55:27,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-29 03:55:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2023-11-29 03:55:27,636 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) [2023-11-29 03:55:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 577 transitions. [2023-11-29 03:55:27,639 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 577 transitions. Word has length 62 [2023-11-29 03:55:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:27,640 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 577 transitions. [2023-11-29 03:55:27,640 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) [2023-11-29 03:55:27,640 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 577 transitions. [2023-11-29 03:55:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 03:55:27,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:27,643 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] [2023-11-29 03:55:27,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:55:27,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:27,844 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)] === [2023-11-29 03:55:27,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:27,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1479376121, now seen corresponding path program 1 times [2023-11-29 03:55:27,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:27,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256007209] [2023-11-29 03:55:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:27,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:27,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:27,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948192586] [2023-11-29 03:55:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:27,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:27,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:27,879 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:27,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:55:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:28,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:28,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:28,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:28,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256007209] [2023-11-29 03:55:28,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948192586] [2023-11-29 03:55:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948192586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:28,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:28,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:55:28,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471367477] [2023-11-29 03:55:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:28,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:28,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:28,223 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) [2023-11-29 03:55:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:28,329 INFO L93 Difference]: Finished difference Result 785 states and 1130 transitions. [2023-11-29 03:55:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:55:28,330 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 [2023-11-29 03:55:28,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:28,337 INFO L225 Difference]: With dead ends: 785 [2023-11-29 03:55:28,337 INFO L226 Difference]: Without dead ends: 783 [2023-11-29 03:55:28,338 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 [2023-11-29 03:55:28,339 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 [2023-11-29 03:55:28,339 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] [2023-11-29 03:55:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-11-29 03:55:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 771. [2023-11-29 03:55:28,367 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) [2023-11-29 03:55:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1126 transitions. [2023-11-29 03:55:28,372 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1126 transitions. Word has length 62 [2023-11-29 03:55:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:28,373 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1126 transitions. [2023-11-29 03:55:28,373 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) [2023-11-29 03:55:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1126 transitions. [2023-11-29 03:55:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 03:55:28,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:28,375 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] [2023-11-29 03:55:28,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:55:28,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:28,582 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)] === [2023-11-29 03:55:28,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1383980546, now seen corresponding path program 1 times [2023-11-29 03:55:28,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761551248] [2023-11-29 03:55:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:28,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:28,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258431684] [2023-11-29 03:55:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:28,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:28,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:28,618 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:28,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:55:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:28,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:28,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:28,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:28,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761551248] [2023-11-29 03:55:28,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258431684] [2023-11-29 03:55:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258431684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:28,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:28,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:55:28,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767450802] [2023-11-29 03:55:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:28,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:28,949 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) [2023-11-29 03:55:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:29,033 INFO L93 Difference]: Finished difference Result 1279 states and 1879 transitions. [2023-11-29 03:55:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:55:29,033 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 [2023-11-29 03:55:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:29,042 INFO L225 Difference]: With dead ends: 1279 [2023-11-29 03:55:29,042 INFO L226 Difference]: Without dead ends: 1277 [2023-11-29 03:55:29,043 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 [2023-11-29 03:55:29,043 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 [2023-11-29 03:55:29,044 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] [2023-11-29 03:55:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-29 03:55:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1269. [2023-11-29 03:55:29,081 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) [2023-11-29 03:55:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1877 transitions. [2023-11-29 03:55:29,089 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1877 transitions. Word has length 63 [2023-11-29 03:55:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:29,090 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1877 transitions. [2023-11-29 03:55:29,090 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) [2023-11-29 03:55:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1877 transitions. [2023-11-29 03:55:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:55:29,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:29,092 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] [2023-11-29 03:55:29,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:55:29,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 03:55:29,295 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)] === [2023-11-29 03:55:29,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1493724209, now seen corresponding path program 1 times [2023-11-29 03:55:29,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:29,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964763693] [2023-11-29 03:55:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:29,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:29,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:29,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964763693] [2023-11-29 03:55:29,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964763693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:29,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:29,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:29,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774283556] [2023-11-29 03:55:29,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:29,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:29,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:29,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:29,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:29,655 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) [2023-11-29 03:55:29,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:29,832 INFO L93 Difference]: Finished difference Result 2361 states and 3509 transitions. [2023-11-29 03:55:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:29,833 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 [2023-11-29 03:55:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:29,842 INFO L225 Difference]: With dead ends: 2361 [2023-11-29 03:55:29,843 INFO L226 Difference]: Without dead ends: 2008 [2023-11-29 03:55:29,844 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 [2023-11-29 03:55:29,844 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 [2023-11-29 03:55:29,845 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] [2023-11-29 03:55:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2023-11-29 03:55:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1269. [2023-11-29 03:55:29,885 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) [2023-11-29 03:55:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1876 transitions. [2023-11-29 03:55:29,891 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1876 transitions. Word has length 69 [2023-11-29 03:55:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:29,891 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1876 transitions. [2023-11-29 03:55:29,892 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) [2023-11-29 03:55:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1876 transitions. [2023-11-29 03:55:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 03:55:29,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:29,893 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] [2023-11-29 03:55:29,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:55:29,894 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)] === [2023-11-29 03:55:29,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:29,894 INFO L85 PathProgramCache]: Analyzing trace with hash 602276963, now seen corresponding path program 1 times [2023-11-29 03:55:29,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:29,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551715848] [2023-11-29 03:55:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:29,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:29,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:29,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611128514] [2023-11-29 03:55:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:29,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:29,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:29,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:29,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:55:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:30,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:55:30,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:30,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:30,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551715848] [2023-11-29 03:55:30,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611128514] [2023-11-29 03:55:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611128514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:30,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:30,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:30,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930584459] [2023-11-29 03:55:30,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:30,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:30,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:30,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:30,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:30,287 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) [2023-11-29 03:55:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:30,330 INFO L93 Difference]: Finished difference Result 1269 states and 1876 transitions. [2023-11-29 03:55:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:30,331 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 [2023-11-29 03:55:30,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:30,339 INFO L225 Difference]: With dead ends: 1269 [2023-11-29 03:55:30,339 INFO L226 Difference]: Without dead ends: 1268 [2023-11-29 03:55:30,340 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 [2023-11-29 03:55:30,340 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 [2023-11-29 03:55:30,341 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] [2023-11-29 03:55:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2023-11-29 03:55:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2023-11-29 03:55:30,383 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) [2023-11-29 03:55:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1874 transitions. [2023-11-29 03:55:30,390 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1874 transitions. Word has length 71 [2023-11-29 03:55:30,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:30,391 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1874 transitions. [2023-11-29 03:55:30,391 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) [2023-11-29 03:55:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1874 transitions. [2023-11-29 03:55:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 03:55:30,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:30,392 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] [2023-11-29 03:55:30,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:55:30,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:30,593 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)] === [2023-11-29 03:55:30,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1490716738, now seen corresponding path program 1 times [2023-11-29 03:55:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:30,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375118946] [2023-11-29 03:55:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:30,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:30,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:30,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171430158] [2023-11-29 03:55:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:30,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:30,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:30,620 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:30,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:55:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:30,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:55:30,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:30,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:30,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:30,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375118946] [2023-11-29 03:55:30,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:30,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171430158] [2023-11-29 03:55:30,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171430158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:30,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:30,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346797842] [2023-11-29 03:55:30,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:30,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:30,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:30,975 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) [2023-11-29 03:55:31,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:31,032 INFO L93 Difference]: Finished difference Result 1295 states and 1894 transitions. [2023-11-29 03:55:31,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:31,033 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 [2023-11-29 03:55:31,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:31,041 INFO L225 Difference]: With dead ends: 1295 [2023-11-29 03:55:31,041 INFO L226 Difference]: Without dead ends: 1294 [2023-11-29 03:55:31,041 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 [2023-11-29 03:55:31,042 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 [2023-11-29 03:55:31,043 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] [2023-11-29 03:55:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2023-11-29 03:55:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1285. [2023-11-29 03:55:31,104 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) [2023-11-29 03:55:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1893 transitions. [2023-11-29 03:55:31,113 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1893 transitions. Word has length 72 [2023-11-29 03:55:31,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:31,114 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1893 transitions. [2023-11-29 03:55:31,114 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) [2023-11-29 03:55:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1893 transitions. [2023-11-29 03:55:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 03:55:31,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:31,116 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] [2023-11-29 03:55:31,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:55:31,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:31,322 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)] === [2023-11-29 03:55:31,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:31,323 INFO L85 PathProgramCache]: Analyzing trace with hash -179740024, now seen corresponding path program 1 times [2023-11-29 03:55:31,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:31,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085674443] [2023-11-29 03:55:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:31,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:31,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:31,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252252640] [2023-11-29 03:55:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:31,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:31,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:31,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:31,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:55:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:31,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:55:31,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:31,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:32,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:32,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085674443] [2023-11-29 03:55:32,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:32,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252252640] [2023-11-29 03:55:32,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252252640] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:32,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:55:32,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-29 03:55:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119993849] [2023-11-29 03:55:32,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:32,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:55:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:55:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:55:32,026 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) [2023-11-29 03:55:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:32,751 INFO L93 Difference]: Finished difference Result 3188 states and 4686 transitions. [2023-11-29 03:55:32,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:55:32,751 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 [2023-11-29 03:55:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:32,767 INFO L225 Difference]: With dead ends: 3188 [2023-11-29 03:55:32,768 INFO L226 Difference]: Without dead ends: 3186 [2023-11-29 03:55:32,769 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 [2023-11-29 03:55:32,770 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 [2023-11-29 03:55:32,770 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] [2023-11-29 03:55:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2023-11-29 03:55:32,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 2936. [2023-11-29 03:55:32,878 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) [2023-11-29 03:55:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4358 transitions. [2023-11-29 03:55:32,894 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4358 transitions. Word has length 79 [2023-11-29 03:55:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:32,894 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 4358 transitions. [2023-11-29 03:55:32,895 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) [2023-11-29 03:55:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4358 transitions. [2023-11-29 03:55:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 03:55:32,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:32,896 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] [2023-11-29 03:55:32,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:55:33,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:33,097 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)] === [2023-11-29 03:55:33,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1135681678, now seen corresponding path program 1 times [2023-11-29 03:55:33,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:33,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123416885] [2023-11-29 03:55:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:33,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:33,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:33,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553464560] [2023-11-29 03:55:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:33,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:33,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:33,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:33,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:55:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:33,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:33,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:33,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:33,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123416885] [2023-11-29 03:55:33,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:33,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553464560] [2023-11-29 03:55:33,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553464560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:33,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:33,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:55:33,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716550442] [2023-11-29 03:55:33,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:33,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:33,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:33,621 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) [2023-11-29 03:55:33,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:33,853 INFO L93 Difference]: Finished difference Result 6364 states and 9496 transitions. [2023-11-29 03:55:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:33,853 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 [2023-11-29 03:55:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:33,873 INFO L225 Difference]: With dead ends: 6364 [2023-11-29 03:55:33,874 INFO L226 Difference]: Without dead ends: 3435 [2023-11-29 03:55:33,879 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 [2023-11-29 03:55:33,880 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 [2023-11-29 03:55:33,880 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] [2023-11-29 03:55:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2023-11-29 03:55:34,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3412. [2023-11-29 03:55:34,023 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) [2023-11-29 03:55:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5108 transitions. [2023-11-29 03:55:34,044 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5108 transitions. Word has length 80 [2023-11-29 03:55:34,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:34,044 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 5108 transitions. [2023-11-29 03:55:34,045 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) [2023-11-29 03:55:34,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5108 transitions. [2023-11-29 03:55:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 03:55:34,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:34,046 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] [2023-11-29 03:55:34,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:55:34,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:34,247 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)] === [2023-11-29 03:55:34,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:34,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1254556124, now seen corresponding path program 1 times [2023-11-29 03:55:34,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:34,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103591719] [2023-11-29 03:55:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:34,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:34,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785836895] [2023-11-29 03:55:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:34,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:34,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:34,283 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:34,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:55:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:34,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:55:34,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:34,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:55:34,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:34,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103591719] [2023-11-29 03:55:34,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:34,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785836895] [2023-11-29 03:55:34,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785836895] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:34,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:55:34,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-29 03:55:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296545381] [2023-11-29 03:55:34,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:34,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:55:34,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:55:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:55:34,924 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) [2023-11-29 03:55:35,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:35,470 INFO L93 Difference]: Finished difference Result 6168 states and 9214 transitions. [2023-11-29 03:55:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:55:35,471 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 [2023-11-29 03:55:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:35,507 INFO L225 Difference]: With dead ends: 6168 [2023-11-29 03:55:35,507 INFO L226 Difference]: Without dead ends: 6167 [2023-11-29 03:55:35,510 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 [2023-11-29 03:55:35,510 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 3222 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-11-29 03:55:35,511 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] [2023-11-29 03:55:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2023-11-29 03:55:35,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 5514. [2023-11-29 03:55:35,740 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) [2023-11-29 03:55:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8232 transitions. [2023-11-29 03:55:35,755 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8232 transitions. Word has length 88 [2023-11-29 03:55:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:35,756 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 8232 transitions. [2023-11-29 03:55:35,756 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) [2023-11-29 03:55:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8232 transitions. [2023-11-29 03:55:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 03:55:35,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:35,758 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] [2023-11-29 03:55:35,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:55:35,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:35,959 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)] === [2023-11-29 03:55:35,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1920423258, now seen corresponding path program 1 times [2023-11-29 03:55:35,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:35,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359512943] [2023-11-29 03:55:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:35,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:36,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62746211] [2023-11-29 03:55:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:36,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:36,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:36,007 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:36,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:55:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:36,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:55:36,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:55:36,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:36,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359512943] [2023-11-29 03:55:36,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62746211] [2023-11-29 03:55:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62746211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:36,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:55:36,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701692172] [2023-11-29 03:55:36,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:36,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:55:36,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:55:36,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:55:36,447 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) [2023-11-29 03:55:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:36,726 INFO L93 Difference]: Finished difference Result 10896 states and 16272 transitions. [2023-11-29 03:55:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:55:36,727 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 [2023-11-29 03:55:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:36,759 INFO L225 Difference]: With dead ends: 10896 [2023-11-29 03:55:36,759 INFO L226 Difference]: Without dead ends: 5514 [2023-11-29 03:55:36,767 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 [2023-11-29 03:55:36,767 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 [2023-11-29 03:55:36,768 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] [2023-11-29 03:55:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2023-11-29 03:55:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 5514. [2023-11-29 03:55:36,945 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) [2023-11-29 03:55:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8231 transitions. [2023-11-29 03:55:36,963 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8231 transitions. Word has length 112 [2023-11-29 03:55:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:36,963 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 8231 transitions. [2023-11-29 03:55:36,964 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) [2023-11-29 03:55:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8231 transitions. [2023-11-29 03:55:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 03:55:36,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:36,966 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] [2023-11-29 03:55:36,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 03:55:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:37,169 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)] === [2023-11-29 03:55:37,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2012946247, now seen corresponding path program 1 times [2023-11-29 03:55:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:37,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346765391] [2023-11-29 03:55:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:37,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:37,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543622758] [2023-11-29 03:55:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:37,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:37,209 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:37,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:55:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:37,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:37,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:37,536 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 [2023-11-29 03:55:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 03:55:37,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:37,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:37,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346765391] [2023-11-29 03:55:37,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:37,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543622758] [2023-11-29 03:55:37,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543622758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:37,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:37,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051464791] [2023-11-29 03:55:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:55:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:55:37,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:55:37,778 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) [2023-11-29 03:55:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:38,110 INFO L93 Difference]: Finished difference Result 7561 states and 11247 transitions. [2023-11-29 03:55:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:55:38,110 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 [2023-11-29 03:55:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:38,126 INFO L225 Difference]: With dead ends: 7561 [2023-11-29 03:55:38,126 INFO L226 Difference]: Without dead ends: 7560 [2023-11-29 03:55:38,128 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 [2023-11-29 03:55:38,129 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 435 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:38,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 2106 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:55:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2023-11-29 03:55:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 7053. [2023-11-29 03:55:38,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7053 states, 6865 states have (on average 1.4965768390386016) internal successors, (10274), 6884 states have internal predecessors, (10274), 123 states have call successors, (123), 67 states have call predecessors, (123), 52 states have return successors, (157), 101 states have call predecessors, (157), 123 states have call successors, (157) [2023-11-29 03:55:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7053 states to 7053 states and 10554 transitions. [2023-11-29 03:55:38,289 INFO L78 Accepts]: Start accepts. Automaton has 7053 states and 10554 transitions. Word has length 117 [2023-11-29 03:55:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:38,290 INFO L495 AbstractCegarLoop]: Abstraction has 7053 states and 10554 transitions. [2023-11-29 03:55:38,290 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) [2023-11-29 03:55:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7053 states and 10554 transitions. [2023-11-29 03:55:38,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 03:55:38,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:38,292 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] [2023-11-29 03:55:38,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:55:38,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:38,492 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)] === [2023-11-29 03:55:38,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2023176601, now seen corresponding path program 1 times [2023-11-29 03:55:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:38,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506924106] [2023-11-29 03:55:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:38,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:38,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377626014] [2023-11-29 03:55:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:38,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:38,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:38,539 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:38,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:55:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:38,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:38,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:39,153 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 [2023-11-29 03:55:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 03:55:39,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:39,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506924106] [2023-11-29 03:55:39,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377626014] [2023-11-29 03:55:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377626014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:39,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:55:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981043731] [2023-11-29 03:55:39,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:39,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:55:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:55:39,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:55:39,164 INFO L87 Difference]: Start difference. First operand 7053 states and 10554 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) [2023-11-29 03:55:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:39,572 INFO L93 Difference]: Finished difference Result 7571 states and 11247 transitions. [2023-11-29 03:55:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:55:39,573 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 [2023-11-29 03:55:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:39,593 INFO L225 Difference]: With dead ends: 7571 [2023-11-29 03:55:39,593 INFO L226 Difference]: Without dead ends: 7570 [2023-11-29 03:55:39,596 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 [2023-11-29 03:55:39,597 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 879 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:39,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1826 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:55:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7570 states. [2023-11-29 03:55:39,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7570 to 4578. [2023-11-29 03:55:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4409 states have (on average 1.470401451576321) internal successors, (6483), 4423 states have internal predecessors, (6483), 106 states have call successors, (106), 62 states have call predecessors, (106), 51 states have return successors, (140), 92 states have call predecessors, (140), 106 states have call successors, (140) [2023-11-29 03:55:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6729 transitions. [2023-11-29 03:55:39,771 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6729 transitions. Word has length 118 [2023-11-29 03:55:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:39,772 INFO L495 AbstractCegarLoop]: Abstraction has 4578 states and 6729 transitions. [2023-11-29 03:55:39,772 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) [2023-11-29 03:55:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6729 transitions. [2023-11-29 03:55:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 03:55:39,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:39,774 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] [2023-11-29 03:55:39,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:55:39,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:39,975 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)] === [2023-11-29 03:55:39,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:39,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1632876603, now seen corresponding path program 1 times [2023-11-29 03:55:39,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789943620] [2023-11-29 03:55:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:40,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:40,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28978239] [2023-11-29 03:55:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:40,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:40,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:40,042 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:40,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:55:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:40,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:55:40,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:55:40,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:40,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789943620] [2023-11-29 03:55:40,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28978239] [2023-11-29 03:55:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28978239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:40,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 03:55:40,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744271938] [2023-11-29 03:55:40,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:40,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:55:40,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:55:40,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:55:40,529 INFO L87 Difference]: Start difference. First operand 4578 states and 6729 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) [2023-11-29 03:55:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:40,751 INFO L93 Difference]: Finished difference Result 7909 states and 11650 transitions. [2023-11-29 03:55:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:55:40,751 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 [2023-11-29 03:55:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:40,760 INFO L225 Difference]: With dead ends: 7909 [2023-11-29 03:55:40,761 INFO L226 Difference]: Without dead ends: 3445 [2023-11-29 03:55:40,768 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 [2023-11-29 03:55:40,768 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 23 mSDsluCounter, 3775 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4319 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 [2023-11-29 03:55:40,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4319 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:55:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2023-11-29 03:55:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 3441. [2023-11-29 03:55:40,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3317 states have (on average 1.478745854687971) internal successors, (4905), 3332 states have internal predecessors, (4905), 67 states have call successors, (67), 51 states have call predecessors, (67), 45 states have return successors, (79), 57 states have call predecessors, (79), 67 states have call successors, (79) [2023-11-29 03:55:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 5051 transitions. [2023-11-29 03:55:40,917 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 5051 transitions. Word has length 123 [2023-11-29 03:55:40,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:40,918 INFO L495 AbstractCegarLoop]: Abstraction has 3441 states and 5051 transitions. [2023-11-29 03:55:40,918 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) [2023-11-29 03:55:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 5051 transitions. [2023-11-29 03:55:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 03:55:40,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:40,920 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] [2023-11-29 03:55:40,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:55:41,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:41,120 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)] === [2023-11-29 03:55:41,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1197109681, now seen corresponding path program 1 times [2023-11-29 03:55:41,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:41,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120433600] [2023-11-29 03:55:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:41,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:41,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:41,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416024815] [2023-11-29 03:55:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:41,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:41,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:41,166 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:41,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:55:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:41,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:55:41,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:55:41,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:55:41,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:41,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120433600] [2023-11-29 03:55:41,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:41,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416024815] [2023-11-29 03:55:41,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416024815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:41,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:55:41,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2023-11-29 03:55:41,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091814098] [2023-11-29 03:55:41,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:41,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:55:41,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:55:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:55:41,804 INFO L87 Difference]: Start difference. First operand 3441 states and 5051 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) [2023-11-29 03:55:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:42,216 INFO L93 Difference]: Finished difference Result 6822 states and 10040 transitions. [2023-11-29 03:55:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:55:42,216 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 [2023-11-29 03:55:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:42,225 INFO L225 Difference]: With dead ends: 6822 [2023-11-29 03:55:42,225 INFO L226 Difference]: Without dead ends: 3516 [2023-11-29 03:55:42,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:55:42,231 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 51 mSDsluCounter, 4323 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:42,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 4868 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:55:42,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2023-11-29 03:55:42,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 3496. [2023-11-29 03:55:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 3370 states have (on average 1.4795252225519289) internal successors, (4986), 3381 states have internal predecessors, (4986), 67 states have call successors, (67), 57 states have call predecessors, (67), 47 states have return successors, (75), 57 states have call predecessors, (75), 67 states have call successors, (75) [2023-11-29 03:55:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 5128 transitions. [2023-11-29 03:55:42,364 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 5128 transitions. Word has length 125 [2023-11-29 03:55:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:42,364 INFO L495 AbstractCegarLoop]: Abstraction has 3496 states and 5128 transitions. [2023-11-29 03:55:42,365 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) [2023-11-29 03:55:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 5128 transitions. [2023-11-29 03:55:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 03:55:42,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:42,366 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] [2023-11-29 03:55:42,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:55:42,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:42,567 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)] === [2023-11-29 03:55:42,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1935202277, now seen corresponding path program 2 times [2023-11-29 03:55:42,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:42,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197129292] [2023-11-29 03:55:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:42,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:42,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:42,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229989281] [2023-11-29 03:55:42,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:55:42,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:42,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:42,620 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:42,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:55:42,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:55:42,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:55:42,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:42,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:42,948 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 [2023-11-29 03:55:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 03:55:42,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:42,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197129292] [2023-11-29 03:55:42,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229989281] [2023-11-29 03:55:42,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229989281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:55:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683326117] [2023-11-29 03:55:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:42,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:42,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:42,954 INFO L87 Difference]: Start difference. First operand 3496 states and 5128 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) [2023-11-29 03:55:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:43,072 INFO L93 Difference]: Finished difference Result 3496 states and 5128 transitions. [2023-11-29 03:55:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:43,072 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 [2023-11-29 03:55:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:43,078 INFO L225 Difference]: With dead ends: 3496 [2023-11-29 03:55:43,078 INFO L226 Difference]: Without dead ends: 3495 [2023-11-29 03:55:43,079 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 [2023-11-29 03:55:43,080 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 2 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1101 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 [2023-11-29 03:55:43,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1101 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:55:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2023-11-29 03:55:43,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2023-11-29 03:55:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3370 states have (on average 1.4777448071216617) internal successors, (4980), 3380 states have internal predecessors, (4980), 67 states have call successors, (67), 57 states have call predecessors, (67), 47 states have return successors, (75), 57 states have call predecessors, (75), 67 states have call successors, (75) [2023-11-29 03:55:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5122 transitions. [2023-11-29 03:55:43,166 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5122 transitions. Word has length 129 [2023-11-29 03:55:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:43,166 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 5122 transitions. [2023-11-29 03:55:43,166 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) [2023-11-29 03:55:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5122 transitions. [2023-11-29 03:55:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 03:55:43,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:43,168 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] [2023-11-29 03:55:43,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:55:43,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:43,368 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)] === [2023-11-29 03:55:43,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:43,369 INFO L85 PathProgramCache]: Analyzing trace with hash -138271454, now seen corresponding path program 1 times [2023-11-29 03:55:43,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:43,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269269315] [2023-11-29 03:55:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:43,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:43,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:43,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334542207] [2023-11-29 03:55:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:43,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:43,420 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:43,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:55:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:43,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 03:55:43,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:55:43,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:55:44,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:44,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269269315] [2023-11-29 03:55:44,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:44,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334542207] [2023-11-29 03:55:44,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334542207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:44,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:55:44,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2023-11-29 03:55:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405466747] [2023-11-29 03:55:44,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:44,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:55:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:55:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:55:44,199 INFO L87 Difference]: Start difference. First operand 3495 states and 5122 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) [2023-11-29 03:55:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:45,529 INFO L93 Difference]: Finished difference Result 6814 states and 9965 transitions. [2023-11-29 03:55:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 03:55:45,530 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 [2023-11-29 03:55:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:45,539 INFO L225 Difference]: With dead ends: 6814 [2023-11-29 03:55:45,539 INFO L226 Difference]: Without dead ends: 3311 [2023-11-29 03:55:45,545 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 [2023-11-29 03:55:45,545 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 155 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 6836 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:45,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 6836 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:55:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2023-11-29 03:55:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3282. [2023-11-29 03:55:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 3157 states have (on average 1.4497941083306938) internal successors, (4577), 3167 states have internal predecessors, (4577), 67 states have call successors, (67), 57 states have call predecessors, (67), 47 states have return successors, (75), 57 states have call predecessors, (75), 67 states have call successors, (75) [2023-11-29 03:55:45,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 4719 transitions. [2023-11-29 03:55:45,696 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 4719 transitions. Word has length 130 [2023-11-29 03:55:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:45,697 INFO L495 AbstractCegarLoop]: Abstraction has 3282 states and 4719 transitions. [2023-11-29 03:55:45,697 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) [2023-11-29 03:55:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 4719 transitions. [2023-11-29 03:55:45,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 03:55:45,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:45,699 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] [2023-11-29 03:55:45,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:55:45,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:45,899 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)] === [2023-11-29 03:55:45,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1199487793, now seen corresponding path program 2 times [2023-11-29 03:55:45,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:45,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293729793] [2023-11-29 03:55:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:45,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:45,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:45,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423784977] [2023-11-29 03:55:45,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:55:45,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:45,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:45,963 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:45,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:55:46,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:55:46,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:55:46,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:55:46,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:46,481 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 [2023-11-29 03:55:46,745 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 23 treesize of output 3 [2023-11-29 03:55:46,781 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 [2023-11-29 03:55:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 03:55:46,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:47,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:47,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293729793] [2023-11-29 03:55:47,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423784977] [2023-11-29 03:55:47,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423784977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:47,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:47,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-29 03:55:47,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222762943] [2023-11-29 03:55:47,230 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:47,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:55:47,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:55:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:55:47,232 INFO L87 Difference]: Start difference. First operand 3282 states and 4719 transitions. Second operand has 9 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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) [2023-11-29 03:55:47,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:47,652 INFO L93 Difference]: Finished difference Result 4653 states and 6701 transitions. [2023-11-29 03:55:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:55:47,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 139 [2023-11-29 03:55:47,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:47,663 INFO L225 Difference]: With dead ends: 4653 [2023-11-29 03:55:47,663 INFO L226 Difference]: Without dead ends: 4652 [2023-11-29 03:55:47,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 148 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:55:47,665 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 731 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3662 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:47,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 3662 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:55:47,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2023-11-29 03:55:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 3296. [2023-11-29 03:55:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3296 states, 3171 states have (on average 1.4484389782403027) internal successors, (4593), 3181 states have internal predecessors, (4593), 67 states have call successors, (67), 57 states have call predecessors, (67), 47 states have return successors, (75), 57 states have call predecessors, (75), 67 states have call successors, (75) [2023-11-29 03:55:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4735 transitions. [2023-11-29 03:55:47,845 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4735 transitions. Word has length 139 [2023-11-29 03:55:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:47,845 INFO L495 AbstractCegarLoop]: Abstraction has 3296 states and 4735 transitions. [2023-11-29 03:55:47,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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) [2023-11-29 03:55:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4735 transitions. [2023-11-29 03:55:47,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-29 03:55:47,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:47,849 INFO L195 NwaCegarLoop]: trace histogram [15, 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] [2023-11-29 03:55:47,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:55:48,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:48,050 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:55:48,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 331033150, now seen corresponding path program 1 times [2023-11-29 03:55:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455749194] [2023-11-29 03:55:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:48,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:48,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792114887] [2023-11-29 03:55:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:48,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:48,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:48,109 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:48,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:55:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:48,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:55:48,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 03:55:48,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:48,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:48,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455749194] [2023-11-29 03:55:48,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:48,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792114887] [2023-11-29 03:55:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792114887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:48,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427956041] [2023-11-29 03:55:48,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:48,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:48,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:48,739 INFO L87 Difference]: Start difference. First operand 3296 states and 4735 transitions. Second operand has 3 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 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) [2023-11-29 03:55:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:48,828 INFO L93 Difference]: Finished difference Result 3296 states and 4735 transitions. [2023-11-29 03:55:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 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 201 [2023-11-29 03:55:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:48,834 INFO L225 Difference]: With dead ends: 3296 [2023-11-29 03:55:48,834 INFO L226 Difference]: Without dead ends: 3295 [2023-11-29 03:55:48,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:48,836 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 315 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 484 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 [2023-11-29 03:55:48,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 484 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:55:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2023-11-29 03:55:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 3295. [2023-11-29 03:55:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 3171 states have (on average 1.4462314727215388) internal successors, (4586), 3180 states have internal predecessors, (4586), 67 states have call successors, (67), 57 states have call predecessors, (67), 47 states have return successors, (75), 57 states have call predecessors, (75), 67 states have call successors, (75) [2023-11-29 03:55:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 4728 transitions. [2023-11-29 03:55:48,991 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 4728 transitions. Word has length 201 [2023-11-29 03:55:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:48,991 INFO L495 AbstractCegarLoop]: Abstraction has 3295 states and 4728 transitions. [2023-11-29 03:55:48,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 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) [2023-11-29 03:55:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 4728 transitions. [2023-11-29 03:55:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-29 03:55:48,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:48,996 INFO L195 NwaCegarLoop]: trace histogram [15, 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] [2023-11-29 03:55:49,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 03:55:49,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:55:49,197 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:55:49,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:49,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1672094412, now seen corresponding path program 1 times [2023-11-29 03:55:49,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:49,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996767683] [2023-11-29 03:55:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:49,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:49,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:49,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223865577] [2023-11-29 03:55:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:49,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:49,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:49,282 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:49,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 03:55:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:49,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:55:49,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 03:55:50,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:50,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:50,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996767683] [2023-11-29 03:55:50,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:50,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223865577] [2023-11-29 03:55:50,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223865577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:50,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:50,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:55:50,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398844241] [2023-11-29 03:55:50,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:50,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:50,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:50,160 INFO L87 Difference]: Start difference. First operand 3295 states and 4728 transitions. Second operand has 3 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 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) [2023-11-29 03:55:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:50,294 INFO L93 Difference]: Finished difference Result 4937 states and 7217 transitions. [2023-11-29 03:55:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:50,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 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 202 [2023-11-29 03:55:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:50,301 INFO L225 Difference]: With dead ends: 4937 [2023-11-29 03:55:50,301 INFO L226 Difference]: Without dead ends: 4936 [2023-11-29 03:55:50,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:50,303 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 311 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 748 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 [2023-11-29 03:55:50,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 748 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:55:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2023-11-29 03:55:50,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4902. [2023-11-29 03:55:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4764 states have (on average 1.4710327455919396) internal successors, (7008), 4773 states have internal predecessors, (7008), 77 states have call successors, (77), 64 states have call predecessors, (77), 51 states have return successors, (85), 64 states have call predecessors, (85), 77 states have call successors, (85) [2023-11-29 03:55:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 7170 transitions. [2023-11-29 03:55:50,491 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 7170 transitions. Word has length 202 [2023-11-29 03:55:50,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:50,492 INFO L495 AbstractCegarLoop]: Abstraction has 4902 states and 7170 transitions. [2023-11-29 03:55:50,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 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) [2023-11-29 03:55:50,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 7170 transitions. [2023-11-29 03:55:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 03:55:50,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:50,496 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:50,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 03:55:50,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:55:50,697 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:55:50,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2096204352, now seen corresponding path program 1 times [2023-11-29 03:55:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:50,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582388142] [2023-11-29 03:55:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:50,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:50,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58605580] [2023-11-29 03:55:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:50,766 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:50,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 03:55:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:51,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:55:51,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-29 03:55:51,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:51,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:51,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582388142] [2023-11-29 03:55:51,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:51,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58605580] [2023-11-29 03:55:51,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58605580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:51,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:51,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:55:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418356354] [2023-11-29 03:55:51,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:51,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:55:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:55:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:51,404 INFO L87 Difference]: Start difference. First operand 4902 states and 7170 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2023-11-29 03:55:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:51,609 INFO L93 Difference]: Finished difference Result 8778 states and 13039 transitions. [2023-11-29 03:55:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:55:51,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 208 [2023-11-29 03:55:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:51,618 INFO L225 Difference]: With dead ends: 8778 [2023-11-29 03:55:51,619 INFO L226 Difference]: Without dead ends: 5364 [2023-11-29 03:55:51,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:55:51,624 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 9 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 918 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 [2023-11-29 03:55:51,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 918 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:55:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2023-11-29 03:55:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 5342. [2023-11-29 03:55:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5204 states have (on average 1.431206764027671) internal successors, (7448), 5213 states have internal predecessors, (7448), 77 states have call successors, (77), 64 states have call predecessors, (77), 51 states have return successors, (85), 64 states have call predecessors, (85), 77 states have call successors, (85) [2023-11-29 03:55:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 7610 transitions. [2023-11-29 03:55:51,877 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 7610 transitions. Word has length 208 [2023-11-29 03:55:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:51,878 INFO L495 AbstractCegarLoop]: Abstraction has 5342 states and 7610 transitions. [2023-11-29 03:55:51,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2023-11-29 03:55:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 7610 transitions. [2023-11-29 03:55:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 03:55:51,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:51,881 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:51,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 03:55:52,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:55:52,090 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:55:52,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 937845694, now seen corresponding path program 1 times [2023-11-29 03:55:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:52,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883854906] [2023-11-29 03:55:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:52,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831471654] [2023-11-29 03:55:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:52,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:52,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:52,151 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:52,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 03:55:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:52,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 1197 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:55:52,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-29 03:55:52,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:52,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883854906] [2023-11-29 03:55:52,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831471654] [2023-11-29 03:55:52,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831471654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:52,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:52,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:55:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963142069] [2023-11-29 03:55:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:52,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:52,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:52,749 INFO L87 Difference]: Start difference. First operand 5342 states and 7610 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2023-11-29 03:55:52,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:52,941 INFO L93 Difference]: Finished difference Result 8874 states and 12897 transitions. [2023-11-29 03:55:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:52,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 208 [2023-11-29 03:55:52,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:52,949 INFO L225 Difference]: With dead ends: 8874 [2023-11-29 03:55:52,949 INFO L226 Difference]: Without dead ends: 5056 [2023-11-29 03:55:52,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:55:52,953 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 165 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1225 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 [2023-11-29 03:55:52,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1225 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:55:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2023-11-29 03:55:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5034. [2023-11-29 03:55:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 4896 states have (on average 1.4268790849673203) internal successors, (6986), 4905 states have internal predecessors, (6986), 77 states have call successors, (77), 64 states have call predecessors, (77), 51 states have return successors, (85), 64 states have call predecessors, (85), 77 states have call successors, (85) [2023-11-29 03:55:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 7148 transitions. [2023-11-29 03:55:53,123 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 7148 transitions. Word has length 208 [2023-11-29 03:55:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:53,124 INFO L495 AbstractCegarLoop]: Abstraction has 5034 states and 7148 transitions. [2023-11-29 03:55:53,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2023-11-29 03:55:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 7148 transitions. [2023-11-29 03:55:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-29 03:55:53,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:53,126 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:53,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 03:55:53,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:55:53,327 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:55:53,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:53,327 INFO L85 PathProgramCache]: Analyzing trace with hash 153179724, now seen corresponding path program 1 times [2023-11-29 03:55:53,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:53,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462420330] [2023-11-29 03:55:53,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:53,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:53,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521655097] [2023-11-29 03:55:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:53,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:53,385 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:53,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 03:55:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:53,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:55:53,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 03:55:54,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-29 03:55:54,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:54,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462420330] [2023-11-29 03:55:54,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:54,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521655097] [2023-11-29 03:55:54,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521655097] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:54,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:55:54,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 03:55:54,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380693918] [2023-11-29 03:55:54,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:54,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:55:54,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:55:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:55:54,339 INFO L87 Difference]: Start difference. First operand 5034 states and 7148 transitions. Second operand has 15 states, 14 states have (on average 21.214285714285715) internal successors, (297), 14 states have internal predecessors, (297), 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) [2023-11-29 03:55:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:55,131 INFO L93 Difference]: Finished difference Result 11134 states and 16036 transitions. [2023-11-29 03:55:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:55:55,131 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 21.214285714285715) internal successors, (297), 14 states have internal predecessors, (297), 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 208 [2023-11-29 03:55:55,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:55,146 INFO L225 Difference]: With dead ends: 11134 [2023-11-29 03:55:55,146 INFO L226 Difference]: Without dead ends: 11133 [2023-11-29 03:55:55,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 404 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:55:55,150 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 3250 mSDsluCounter, 3843 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3252 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:55,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3252 Valid, 4412 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:55:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11133 states. [2023-11-29 03:55:55,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11133 to 10240. [2023-11-29 03:55:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10240 states, 10058 states have (on average 1.443030423543448) internal successors, (14514), 10075 states have internal predecessors, (14514), 103 states have call successors, (103), 79 states have call predecessors, (103), 69 states have return successors, (111), 85 states have call predecessors, (111), 103 states have call successors, (111) [2023-11-29 03:55:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10240 states to 10240 states and 14728 transitions. [2023-11-29 03:55:55,425 INFO L78 Accepts]: Start accepts. Automaton has 10240 states and 14728 transitions. Word has length 208 [2023-11-29 03:55:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:55,425 INFO L495 AbstractCegarLoop]: Abstraction has 10240 states and 14728 transitions. [2023-11-29 03:55:55,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 21.214285714285715) internal successors, (297), 14 states have internal predecessors, (297), 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) [2023-11-29 03:55:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 10240 states and 14728 transitions. [2023-11-29 03:55:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 03:55:55,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:55,428 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:55:55,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 03:55:55,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:55:55,629 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:55:55,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash -632944855, now seen corresponding path program 1 times [2023-11-29 03:55:55,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:55,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520872248] [2023-11-29 03:55:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:55,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:55,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:55,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198822601] [2023-11-29 03:55:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:55,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:55,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:55,681 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:55,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 03:55:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:56,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:55:56,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 03:55:56,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:55:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 03:55:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520872248] [2023-11-29 03:55:56,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:56,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198822601] [2023-11-29 03:55:56,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198822601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:55:56,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:55:56,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 5 [2023-11-29 03:55:56,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004775605] [2023-11-29 03:55:56,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:55:56,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:55:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:56,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:55:56,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:55:56,618 INFO L87 Difference]: Start difference. First operand 10240 states and 14728 transitions. Second operand has 6 states, 5 states have (on average 70.8) internal successors, (354), 6 states have internal predecessors, (354), 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) [2023-11-29 03:55:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:57,128 INFO L93 Difference]: Finished difference Result 23256 states and 33736 transitions. [2023-11-29 03:55:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:55:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 70.8) internal successors, (354), 6 states have internal predecessors, (354), 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 210 [2023-11-29 03:55:57,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:57,157 INFO L225 Difference]: With dead ends: 23256 [2023-11-29 03:55:57,157 INFO L226 Difference]: Without dead ends: 23255 [2023-11-29 03:55:57,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:55:57,160 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1189 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:57,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1490 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:55:57,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23255 states. [2023-11-29 03:55:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23255 to 23239. [2023-11-29 03:55:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23239 states, 22943 states have (on average 1.4527306803818159) internal successors, (33330), 22969 states have internal predecessors, (33330), 178 states have call successors, (178), 127 states have call predecessors, (178), 108 states have return successors, (186), 142 states have call predecessors, (186), 178 states have call successors, (186) [2023-11-29 03:55:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23239 states to 23239 states and 33694 transitions. [2023-11-29 03:55:57,861 INFO L78 Accepts]: Start accepts. Automaton has 23239 states and 33694 transitions. Word has length 210 [2023-11-29 03:55:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:55:57,862 INFO L495 AbstractCegarLoop]: Abstraction has 23239 states and 33694 transitions. [2023-11-29 03:55:57,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 70.8) internal successors, (354), 6 states have internal predecessors, (354), 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) [2023-11-29 03:55:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 23239 states and 33694 transitions. [2023-11-29 03:55:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-29 03:55:57,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:55:57,864 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 03:55:57,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 03:55:58,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:55:58,065 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:55:58,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2105472927, now seen corresponding path program 1 times [2023-11-29 03:55:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:58,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363389953] [2023-11-29 03:55:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:58,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:58,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:55:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911070717] [2023-11-29 03:55:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:58,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:58,141 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:58,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 03:55:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:58,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:55:58,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:58,777 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 [2023-11-29 03:55:58,888 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 [2023-11-29 03:55:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 03:55:58,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:58,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363389953] [2023-11-29 03:55:58,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:55:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911070717] [2023-11-29 03:55:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911070717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:58,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:58,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:55:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919359753] [2023-11-29 03:55:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:58,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:55:58,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:55:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:55:58,898 INFO L87 Difference]: Start difference. First operand 23239 states and 33694 transitions. Second operand has 5 states, 4 states have (on average 45.0) internal successors, (180), 5 states have internal predecessors, (180), 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) [2023-11-29 03:55:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:55:59,520 INFO L93 Difference]: Finished difference Result 25432 states and 36784 transitions. [2023-11-29 03:55:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:59,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 45.0) internal successors, (180), 5 states have internal predecessors, (180), 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 212 [2023-11-29 03:55:59,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:55:59,555 INFO L225 Difference]: With dead ends: 25432 [2023-11-29 03:55:59,555 INFO L226 Difference]: Without dead ends: 25431 [2023-11-29 03:55:59,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:55:59,561 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 361 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:55:59,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1187 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:55:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25431 states. [2023-11-29 03:56:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25431 to 23238. [2023-11-29 03:56:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23238 states, 22943 states have (on average 1.4524255764285403) internal successors, (33323), 22968 states have internal predecessors, (33323), 178 states have call successors, (178), 127 states have call predecessors, (178), 108 states have return successors, (186), 142 states have call predecessors, (186), 178 states have call successors, (186) [2023-11-29 03:56:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23238 states to 23238 states and 33687 transitions. [2023-11-29 03:56:00,139 INFO L78 Accepts]: Start accepts. Automaton has 23238 states and 33687 transitions. Word has length 212 [2023-11-29 03:56:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:00,140 INFO L495 AbstractCegarLoop]: Abstraction has 23238 states and 33687 transitions. [2023-11-29 03:56:00,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 45.0) internal successors, (180), 5 states have internal predecessors, (180), 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) [2023-11-29 03:56:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 23238 states and 33687 transitions. [2023-11-29 03:56:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-29 03:56:00,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:00,142 INFO L195 NwaCegarLoop]: trace histogram [15, 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] [2023-11-29 03:56:00,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 03:56:00,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 03:56:00,343 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:00,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash 834059517, now seen corresponding path program 1 times [2023-11-29 03:56:00,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:00,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924766544] [2023-11-29 03:56:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:00,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:00,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:56:00,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335937468] [2023-11-29 03:56:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:00,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:00,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:00,407 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:00,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 03:56:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:01,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:56:01,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-29 03:56:01,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924766544] [2023-11-29 03:56:01,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:56:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335937468] [2023-11-29 03:56:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335937468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:01,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:01,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:56:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473399091] [2023-11-29 03:56:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:01,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:01,075 INFO L87 Difference]: Start difference. First operand 23238 states and 33687 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-11-29 03:56:01,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:01,346 INFO L93 Difference]: Finished difference Result 30649 states and 44337 transitions. [2023-11-29 03:56:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 218 [2023-11-29 03:56:01,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:01,354 INFO L225 Difference]: With dead ends: 30649 [2023-11-29 03:56:01,354 INFO L226 Difference]: Without dead ends: 6256 [2023-11-29 03:56:01,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:01,372 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 14 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 929 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 [2023-11-29 03:56:01,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 929 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:56:01,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2023-11-29 03:56:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 5866. [2023-11-29 03:56:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5866 states, 5746 states have (on average 1.4103724329968674) internal successors, (8104), 5759 states have internal predecessors, (8104), 62 states have call successors, (62), 54 states have call predecessors, (62), 50 states have return successors, (70), 52 states have call predecessors, (70), 62 states have call successors, (70) [2023-11-29 03:56:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 8236 transitions. [2023-11-29 03:56:01,637 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 8236 transitions. Word has length 218 [2023-11-29 03:56:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:01,638 INFO L495 AbstractCegarLoop]: Abstraction has 5866 states and 8236 transitions. [2023-11-29 03:56:01,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-11-29 03:56:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 8236 transitions. [2023-11-29 03:56:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-29 03:56:01,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:01,640 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:01,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 03:56:01,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:56:01,840 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:01,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash 846994586, now seen corresponding path program 1 times [2023-11-29 03:56:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:01,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136107964] [2023-11-29 03:56:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:01,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:01,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:56:01,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529215172] [2023-11-29 03:56:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:01,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:01,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:01,913 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:01,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 03:56:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:02,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 243 conjunts are in the unsatisfiable core [2023-11-29 03:56:02,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:02,682 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 [2023-11-29 03:56:02,918 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 03:56:02,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 03:56:02,954 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 [2023-11-29 03:56:02,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-29 03:56:03,034 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 18 treesize of output 10 [2023-11-29 03:56:03,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 03:56:03,724 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 03:56:03,725 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 03:56:03,731 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 24 treesize of output 11 [2023-11-29 03:56:11,448 WARN L293 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 250 DAG size of output: 71 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 03:56:11,448 INFO L349 Elim1Store]: treesize reduction 1984, result has 9.3 percent of original size [2023-11-29 03:56:11,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 9 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 14 new quantified variables, introduced 44 case distinctions, treesize of input 4660 treesize of output 3481 [2023-11-29 03:56:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:56:11,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 643 treesize of output 581 [2023-11-29 03:56:11,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 1 [2023-11-29 03:56:13,182 INFO L349 Elim1Store]: treesize reduction 518, result has 12.4 percent of original size [2023-11-29 03:56:13,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 1073 treesize of output 2234 [2023-11-29 03:56:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136107964] [2023-11-29 03:56:16,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:56:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529215172] [2023-11-29 03:56:16,539 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 03:56:16,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 03:56:16,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 03:56:16,740 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:331) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:186) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:543) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:522) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:515) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-29 03:56:16,744 INFO L158 Benchmark]: Toolchain (without parser) took 55029.15ms. Allocated memory was 190.8MB in the beginning and 1.1GB in the end (delta: 922.7MB). Free memory was 146.3MB in the beginning and 393.0MB in the end (delta: -246.7MB). Peak memory consumption was 756.9MB. Max. memory is 16.1GB. [2023-11-29 03:56:16,744 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 190.8MB. Free memory is still 161.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:56:16,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1023.07ms. Allocated memory is still 190.8MB. Free memory was 146.2MB in the beginning and 103.1MB in the end (delta: 43.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-29 03:56:16,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.81ms. Allocated memory is still 190.8MB. Free memory was 103.1MB in the beginning and 93.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 03:56:16,744 INFO L158 Benchmark]: Boogie Preprocessor took 250.31ms. Allocated memory was 190.8MB in the beginning and 257.9MB in the end (delta: 67.1MB). Free memory was 93.8MB in the beginning and 216.7MB in the end (delta: -122.9MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. [2023-11-29 03:56:16,745 INFO L158 Benchmark]: RCFGBuilder took 1705.11ms. Allocated memory is still 257.9MB. Free memory was 216.7MB in the beginning and 195.4MB in the end (delta: 21.3MB). Peak memory consumption was 101.0MB. Max. memory is 16.1GB. [2023-11-29 03:56:16,745 INFO L158 Benchmark]: TraceAbstraction took 51923.22ms. Allocated memory was 257.9MB in the beginning and 1.1GB in the end (delta: 855.6MB). Free memory was 194.4MB in the beginning and 393.0MB in the end (delta: -198.6MB). Peak memory consumption was 735.8MB. Max. memory is 16.1GB. [2023-11-29 03:56:16,746 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 190.8MB. Free memory is still 161.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1023.07ms. Allocated memory is still 190.8MB. Free memory was 146.2MB in the beginning and 103.1MB in the end (delta: 43.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.81ms. Allocated memory is still 190.8MB. Free memory was 103.1MB in the beginning and 93.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 250.31ms. Allocated memory was 190.8MB in the beginning and 257.9MB in the end (delta: 67.1MB). Free memory was 93.8MB in the beginning and 216.7MB in the end (delta: -122.9MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1705.11ms. Allocated memory is still 257.9MB. Free memory was 216.7MB in the beginning and 195.4MB in the end (delta: 21.3MB). Peak memory consumption was 101.0MB. Max. memory is 16.1GB. * TraceAbstraction took 51923.22ms. Allocated memory was 257.9MB in the beginning and 1.1GB in the end (delta: 855.6MB). Free memory was 194.4MB in the beginning and 393.0MB in the end (delta: -198.6MB). Peak memory consumption was 735.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-29 03:56:16,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/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_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:56:18,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:56:18,780 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf [2023-11-29 03:56:18,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:56:18,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:56:18,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:56:18,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:56:18,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:56:18,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:56:18,815 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:56:18,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:56:18,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:56:18,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:56:18,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:56:18,818 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:56:18,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:56:18,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:56:18,819 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:56:18,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:56:18,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:56:18,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:56:18,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:56:18,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:56:18,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:56:18,822 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 03:56:18,823 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:56:18,823 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 03:56:18,823 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:56:18,824 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:56:18,824 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:56:18,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:56:18,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:56:18,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:56:18,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:56:18,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:56:18,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:56:18,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:56:18,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:56:18,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:56:18,827 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 03:56:18,827 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 03:56:18,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:56:18,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:56:18,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:56:18,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:56:18,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:56:18,829 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 03:56:18,829 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_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2023-11-29 03:56:19,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:56:19,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:56:19,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:56:19,146 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:56:19,146 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:56:19,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-29 03:56:21,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:56:22,237 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:56:22,237 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-29 03:56:22,257 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/data/297c1007e/88baea91d43e4934a9d034380aaf5706/FLAGd55818606 [2023-11-29 03:56:22,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/data/297c1007e/88baea91d43e4934a9d034380aaf5706 [2023-11-29 03:56:22,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:56:22,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:56:22,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:56:22,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:56:22,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:56:22,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:56:22" (1/1) ... [2023-11-29 03:56:22,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562709db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:22, skipping insertion in model container [2023-11-29 03:56:22,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:56:22" (1/1) ... [2023-11-29 03:56:22,380 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:56:22,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:56:22,947 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 03:56:22,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:56:23,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:56:23,059 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:56:23,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:56:23,229 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:56:23,236 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:56:23,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23 WrapperNode [2023-11-29 03:56:23,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:56:23,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:56:23,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:56:23,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:56:23,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,342 INFO L138 Inliner]: procedures = 285, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1055 [2023-11-29 03:56:23,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:56:23,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:56:23,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:56:23,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:56:23,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,466 INFO L175 MemorySlicer]: Split 264 memory accesses to 5 slices as follows [2, 34, 5, 3, 220]. 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, 4, 1, 2, 49]. [2023-11-29 03:56:23,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:56:23,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:56:23,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:56:23,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:56:23,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (1/1) ... [2023-11-29 03:56:23,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:56:23,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:23,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:56:23,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:56:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-29 03:56:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-29 03:56:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 03:56:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 03:56:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 03:56:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 03:56:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-29 03:56:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 03:56:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 03:56:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 03:56:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 03:56:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 03:56:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:56:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 03:56:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 03:56:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 03:56:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 03:56:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 03:56:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 03:56:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:56:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 03:56:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 03:56:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 03:56:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 03:56:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 03:56:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 03:56:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 03:56:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 03:56:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 03:56:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 03:56:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-29 03:56:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-29 03:56:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 03:56:23,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 03:56:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:56:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:56:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-29 03:56:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-29 03:56:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 03:56:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 03:56:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 03:56:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 03:56:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 03:56:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-29 03:56:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-29 03:56:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:56:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:56:23,850 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:56:23,852 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:56:33,180 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:56:33,218 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:56:33,218 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-29 03:56:33,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:56:33 BoogieIcfgContainer [2023-11-29 03:56:33,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:56:33,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:56:33,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:56:33,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:56:33,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:56:22" (1/3) ... [2023-11-29 03:56:33,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca29a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:56:33, skipping insertion in model container [2023-11-29 03:56:33,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:56:23" (2/3) ... [2023-11-29 03:56:33,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca29a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:56:33, skipping insertion in model container [2023-11-29 03:56:33,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:56:33" (3/3) ... [2023-11-29 03:56:33,226 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2023-11-29 03:56:33,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:56:33,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 03:56:33,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:56:33,294 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;@266f64d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:56:33,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-29 03:56:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 212 states have (on average 1.6556603773584906) internal successors, (351), 229 states have internal predecessors, (351), 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) [2023-11-29 03:56:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:56:33,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:33,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:56:33,308 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)] === [2023-11-29 03:56:33,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:33,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1477347826, now seen corresponding path program 1 times [2023-11-29 03:56:33,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402901255] [2023-11-29 03:56:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:33,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:33,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:33,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:33,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 03:56:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:33,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:56:33,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:33,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:33,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:33,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402901255] [2023-11-29 03:56:33,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402901255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:33,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:33,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:56:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452092709] [2023-11-29 03:56:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:33,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:56:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:56:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:56:33,683 INFO L87 Difference]: Start difference. First operand has 249 states, 212 states have (on average 1.6556603773584906) internal successors, (351), 229 states have internal predecessors, (351), 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) [2023-11-29 03:56:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:33,806 INFO L93 Difference]: Finished difference Result 486 states and 778 transitions. [2023-11-29 03:56:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:56:33,808 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 [2023-11-29 03:56:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:33,819 INFO L225 Difference]: With dead ends: 486 [2023-11-29 03:56:33,819 INFO L226 Difference]: Without dead ends: 226 [2023-11-29 03:56:33,824 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 [2023-11-29 03:56:33,828 INFO L413 NwaCegarLoop]: 295 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, 295 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 [2023-11-29 03:56:33,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:56:33,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-29 03:56:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2023-11-29 03:56:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 204 states have (on average 1.2990196078431373) internal successors, (265), 212 states have internal predecessors, (265), 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) [2023-11-29 03:56:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 285 transitions. [2023-11-29 03:56:33,880 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 285 transitions. Word has length 6 [2023-11-29 03:56:33,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:33,880 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 285 transitions. [2023-11-29 03:56:33,880 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) [2023-11-29 03:56:33,881 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 285 transitions. [2023-11-29 03:56:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:56:33,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:33,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:56:33,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:56:34,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:34,082 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)] === [2023-11-29 03:56:34,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:34,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1477349748, now seen corresponding path program 1 times [2023-11-29 03:56:34,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:34,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478158727] [2023-11-29 03:56:34,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:34,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:34,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:34,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:34,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 03:56:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:34,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:56:34,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:34,332 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:56:34,340 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 40 treesize of output 19 [2023-11-29 03:56:34,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:56:34,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 36 [2023-11-29 03:56:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:34,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:34,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:34,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478158727] [2023-11-29 03:56:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478158727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:34,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:34,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:56:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262884009] [2023-11-29 03:56:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:34,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:56:34,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:34,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:56:34,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:56:34,597 INFO L87 Difference]: Start difference. First operand 226 states and 285 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2023-11-29 03:56:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:35,737 INFO L93 Difference]: Finished difference Result 528 states and 675 transitions. [2023-11-29 03:56:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:56:35,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 [2023-11-29 03:56:35,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:35,743 INFO L225 Difference]: With dead ends: 528 [2023-11-29 03:56:35,743 INFO L226 Difference]: Without dead ends: 423 [2023-11-29 03:56:35,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:56:35,745 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 468 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:35,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1019 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:56:35,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-29 03:56:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 232. [2023-11-29 03:56:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 210 states have (on average 1.2904761904761906) internal successors, (271), 218 states have internal predecessors, (271), 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) [2023-11-29 03:56:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 291 transitions. [2023-11-29 03:56:35,785 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 291 transitions. Word has length 6 [2023-11-29 03:56:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:35,786 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 291 transitions. [2023-11-29 03:56:35,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2023-11-29 03:56:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 291 transitions. [2023-11-29 03:56:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 03:56:35,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:35,788 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] [2023-11-29 03:56:35,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 03:56:35,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:35,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:35,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash 164605264, now seen corresponding path program 1 times [2023-11-29 03:56:35,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:35,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239376658] [2023-11-29 03:56:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:35,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:35,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:35,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:35,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 03:56:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:36,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:56:36,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:36,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:36,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:36,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239376658] [2023-11-29 03:56:36,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239376658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:36,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:36,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:56:36,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761480476] [2023-11-29 03:56:36,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:36,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:56:36,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:36,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:56:36,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:56:36,352 INFO L87 Difference]: Start difference. First operand 232 states and 291 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2023-11-29 03:56:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:36,506 INFO L93 Difference]: Finished difference Result 461 states and 582 transitions. [2023-11-29 03:56:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:56:36,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 45 [2023-11-29 03:56:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:36,510 INFO L225 Difference]: With dead ends: 461 [2023-11-29 03:56:36,510 INFO L226 Difference]: Without dead ends: 236 [2023-11-29 03:56:36,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:56:36,512 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 36 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:36,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 723 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:56:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-29 03:56:36,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2023-11-29 03:56:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 213 states have (on average 1.2488262910798122) internal successors, (266), 221 states have internal predecessors, (266), 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) [2023-11-29 03:56:36,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2023-11-29 03:56:36,528 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 45 [2023-11-29 03:56:36,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:36,529 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2023-11-29 03:56:36,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2023-11-29 03:56:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2023-11-29 03:56:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 03:56:36,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:36,531 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] [2023-11-29 03:56:36,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 03:56:36,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:36,735 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:36,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:36,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1474858716, now seen corresponding path program 1 times [2023-11-29 03:56:36,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:36,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192024010] [2023-11-29 03:56:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:36,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:36,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:36,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:36,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 03:56:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:37,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:56:37,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:37,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:37,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192024010] [2023-11-29 03:56:37,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192024010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:37,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:37,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:56:37,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859150931] [2023-11-29 03:56:37,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:37,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:56:37,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:56:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:56:37,151 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-11-29 03:56:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:37,300 INFO L93 Difference]: Finished difference Result 408 states and 498 transitions. [2023-11-29 03:56:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:56:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 45 [2023-11-29 03:56:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:37,305 INFO L225 Difference]: With dead ends: 408 [2023-11-29 03:56:37,305 INFO L226 Difference]: Without dead ends: 406 [2023-11-29 03:56:37,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:56:37,307 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 158 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:37,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 783 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:56:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-29 03:56:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 400. [2023-11-29 03:56:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 375 states have (on average 1.2506666666666666) internal successors, (469), 384 states have internal predecessors, (469), 13 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:56:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 495 transitions. [2023-11-29 03:56:37,331 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 495 transitions. Word has length 45 [2023-11-29 03:56:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:37,332 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 495 transitions. [2023-11-29 03:56:37,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-11-29 03:56:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 495 transitions. [2023-11-29 03:56:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 03:56:37,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:37,335 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] [2023-11-29 03:56:37,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 03:56:37,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:37,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:37,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1575178639, now seen corresponding path program 1 times [2023-11-29 03:56:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895226238] [2023-11-29 03:56:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:37,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:37,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:37,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:37,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 03:56:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:37,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:56:37,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:38,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:38,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:38,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895226238] [2023-11-29 03:56:38,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895226238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:38,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:38,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:56:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397342953] [2023-11-29 03:56:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:38,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:56:38,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:56:38,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:56:38,046 INFO L87 Difference]: Start difference. First operand 400 states and 495 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:56:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:38,436 INFO L93 Difference]: Finished difference Result 636 states and 781 transitions. [2023-11-29 03:56:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:56:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-11-29 03:56:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:38,440 INFO L225 Difference]: With dead ends: 636 [2023-11-29 03:56:38,440 INFO L226 Difference]: Without dead ends: 408 [2023-11-29 03:56:38,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:56:38,442 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 181 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:38,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1192 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:56:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-29 03:56:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 402. [2023-11-29 03:56:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 376 states have (on average 1.25) internal successors, (470), 385 states have internal predecessors, (470), 13 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (16), 10 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 03:56:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 499 transitions. [2023-11-29 03:56:38,462 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 499 transitions. Word has length 54 [2023-11-29 03:56:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:38,463 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 499 transitions. [2023-11-29 03:56:38,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:56:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 499 transitions. [2023-11-29 03:56:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 03:56:38,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:38,465 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] [2023-11-29 03:56:38,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 03:56:38,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:38,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:38,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2095119611, now seen corresponding path program 1 times [2023-11-29 03:56:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:38,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843721893] [2023-11-29 03:56:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:38,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:38,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:38,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 03:56:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:39,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:56:39,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:39,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:39,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:39,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843721893] [2023-11-29 03:56:39,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843721893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:39,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:39,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:56:39,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635358206] [2023-11-29 03:56:39,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:39,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:39,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:39,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:39,172 INFO L87 Difference]: Start difference. First operand 402 states and 499 transitions. Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:56:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:39,254 INFO L93 Difference]: Finished difference Result 527 states and 650 transitions. [2023-11-29 03:56:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:39,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2023-11-29 03:56:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:39,259 INFO L225 Difference]: With dead ends: 527 [2023-11-29 03:56:39,259 INFO L226 Difference]: Without dead ends: 524 [2023-11-29 03:56:39,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:39,261 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 170 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:39,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 529 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:56:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-29 03:56:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 516. [2023-11-29 03:56:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 483 states have (on average 1.2567287784679089) internal successors, (607), 492 states have internal predecessors, (607), 18 states have call successors, (18), 9 states have call predecessors, (18), 7 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 03:56:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 643 transitions. [2023-11-29 03:56:39,289 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 643 transitions. Word has length 59 [2023-11-29 03:56:39,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:39,290 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 643 transitions. [2023-11-29 03:56:39,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:56:39,290 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 643 transitions. [2023-11-29 03:56:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 03:56:39,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:39,292 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] [2023-11-29 03:56:39,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 03:56:39,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:39,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:39,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -257542191, now seen corresponding path program 1 times [2023-11-29 03:56:39,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:39,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768200931] [2023-11-29 03:56:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:39,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:39,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:39,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:39,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 03:56:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:39,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:56:39,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:40,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:40,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:40,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768200931] [2023-11-29 03:56:40,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768200931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:40,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:40,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:56:40,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075384243] [2023-11-29 03:56:40,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:40,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:40,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:40,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:40,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:40,093 INFO L87 Difference]: Start difference. First operand 516 states and 643 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2023-11-29 03:56:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:41,072 INFO L93 Difference]: Finished difference Result 876 states and 1083 transitions. [2023-11-29 03:56:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:41,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2023-11-29 03:56:41,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:41,076 INFO L225 Difference]: With dead ends: 876 [2023-11-29 03:56:41,076 INFO L226 Difference]: Without dead ends: 367 [2023-11-29 03:56:41,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:41,078 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 101 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:41,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 539 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:56:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-29 03:56:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 361. [2023-11-29 03:56:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 334 states have (on average 1.2335329341317365) internal successors, (412), 342 states have internal predecessors, (412), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:56:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 438 transitions. [2023-11-29 03:56:41,097 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 438 transitions. Word has length 61 [2023-11-29 03:56:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:41,098 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 438 transitions. [2023-11-29 03:56:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2023-11-29 03:56:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 438 transitions. [2023-11-29 03:56:41,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 03:56:41,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:41,100 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] [2023-11-29 03:56:41,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 03:56:41,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:41,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:41,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:41,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1858902940, now seen corresponding path program 1 times [2023-11-29 03:56:41,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:41,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338135467] [2023-11-29 03:56:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:41,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:41,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:41,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:41,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 03:56:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:41,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:56:41,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:41,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:41,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338135467] [2023-11-29 03:56:41,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338135467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:41,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:41,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:56:41,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937880689] [2023-11-29 03:56:41,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:41,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:56:41,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:56:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:56:41,772 INFO L87 Difference]: Start difference. First operand 361 states and 438 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 03:56:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:41,916 INFO L93 Difference]: Finished difference Result 659 states and 812 transitions. [2023-11-29 03:56:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:56:41,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 66 [2023-11-29 03:56:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:41,920 INFO L225 Difference]: With dead ends: 659 [2023-11-29 03:56:41,920 INFO L226 Difference]: Without dead ends: 363 [2023-11-29 03:56:41,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:56:41,921 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 6 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:41,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1034 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:56:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-29 03:56:41,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-11-29 03:56:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 335 states have (on average 1.2358208955223882) internal successors, (414), 344 states have internal predecessors, (414), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 03:56:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 441 transitions. [2023-11-29 03:56:41,936 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 441 transitions. Word has length 66 [2023-11-29 03:56:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:41,937 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 441 transitions. [2023-11-29 03:56:41,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 03:56:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 441 transitions. [2023-11-29 03:56:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 03:56:41,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:41,938 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] [2023-11-29 03:56:41,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 03:56:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:42,146 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:42,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1064009903, now seen corresponding path program 1 times [2023-11-29 03:56:42,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:42,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714677728] [2023-11-29 03:56:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:42,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:42,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:42,148 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:42,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 03:56:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:42,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:56:42,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:42,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:42,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:42,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714677728] [2023-11-29 03:56:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714677728] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:42,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:56:42,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 03:56:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004621723] [2023-11-29 03:56:42,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:56:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:56:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:56:42,749 INFO L87 Difference]: Start difference. First operand 363 states and 441 transitions. Second operand has 10 states, 8 states have (on average 8.125) internal successors, (65), 10 states have internal predecessors, (65), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 03:56:43,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:43,207 INFO L93 Difference]: Finished difference Result 673 states and 834 transitions. [2023-11-29 03:56:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:56:43,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.125) internal successors, (65), 10 states have internal predecessors, (65), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-11-29 03:56:43,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:43,210 INFO L225 Difference]: With dead ends: 673 [2023-11-29 03:56:43,210 INFO L226 Difference]: Without dead ends: 375 [2023-11-29 03:56:43,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:56:43,211 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 28 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:43,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1813 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:56:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-29 03:56:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2023-11-29 03:56:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 344 states have (on average 1.25) internal successors, (430), 353 states have internal predecessors, (430), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 03:56:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 457 transitions. [2023-11-29 03:56:43,229 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 457 transitions. Word has length 67 [2023-11-29 03:56:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:43,229 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 457 transitions. [2023-11-29 03:56:43,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.125) internal successors, (65), 10 states have internal predecessors, (65), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 03:56:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 457 transitions. [2023-11-29 03:56:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:56:43,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:43,231 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-29 03:56:43,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-29 03:56:43,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:43,440 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)] === [2023-11-29 03:56:43,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash -300337244, now seen corresponding path program 2 times [2023-11-29 03:56:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945472546] [2023-11-29 03:56:43,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:56:43,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:43,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:43,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:43,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 03:56:44,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:56:44,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:56:44,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:56:44,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:56:44,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:56:44,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945472546] [2023-11-29 03:56:44,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945472546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:44,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:56:44,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 03:56:44,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127027546] [2023-11-29 03:56:44,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:44,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:56:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:56:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:56:44,666 INFO L87 Difference]: Start difference. First operand 373 states and 457 transitions. Second operand has 14 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:56:46,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:46,505 INFO L93 Difference]: Finished difference Result 2055 states and 2599 transitions. [2023-11-29 03:56:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:56:46,506 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 70 [2023-11-29 03:56:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:46,516 INFO L225 Difference]: With dead ends: 2055 [2023-11-29 03:56:46,516 INFO L226 Difference]: Without dead ends: 1747 [2023-11-29 03:56:46,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:56:46,519 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 2154 mSDsluCounter, 3943 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:46,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 4582 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 03:56:46,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2023-11-29 03:56:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1377. [2023-11-29 03:56:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1304 states have (on average 1.2638036809815951) internal successors, (1648), 1320 states have internal predecessors, (1648), 42 states have call successors, (42), 22 states have call predecessors, (42), 23 states have return successors, (57), 34 states have call predecessors, (57), 42 states have call successors, (57) [2023-11-29 03:56:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1747 transitions. [2023-11-29 03:56:46,604 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1747 transitions. Word has length 70 [2023-11-29 03:56:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:46,604 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 1747 transitions. [2023-11-29 03:56:46,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:56:46,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1747 transitions. [2023-11-29 03:56:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 03:56:46,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:46,606 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-29 03:56:46,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 03:56:46,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:46,807 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:46,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:46,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1394454233, now seen corresponding path program 1 times [2023-11-29 03:56:46,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:46,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666618243] [2023-11-29 03:56:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:46,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:46,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:46,809 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:46,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 03:56:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:47,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:56:47,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:47,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:56:47,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:47,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666618243] [2023-11-29 03:56:47,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666618243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:47,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:56:47,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 03:56:47,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515245212] [2023-11-29 03:56:47,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:47,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:56:47,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:47,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:56:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:56:47,793 INFO L87 Difference]: Start difference. First operand 1377 states and 1747 transitions. Second operand has 16 states, 14 states have (on average 5.642857142857143) internal successors, (79), 16 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 03:56:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:49,049 INFO L93 Difference]: Finished difference Result 2738 states and 3514 transitions. [2023-11-29 03:56:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:56:49,050 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.642857142857143) internal successors, (79), 16 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2023-11-29 03:56:49,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:49,059 INFO L225 Difference]: With dead ends: 2738 [2023-11-29 03:56:49,059 INFO L226 Difference]: Without dead ends: 1418 [2023-11-29 03:56:49,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=310, Invalid=746, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:56:49,063 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 50 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:49,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2080 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:56:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2023-11-29 03:56:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1413. [2023-11-29 03:56:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1340 states have (on average 1.2656716417910447) internal successors, (1696), 1356 states have internal predecessors, (1696), 42 states have call successors, (42), 22 states have call predecessors, (42), 23 states have return successors, (57), 34 states have call predecessors, (57), 42 states have call successors, (57) [2023-11-29 03:56:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1795 transitions. [2023-11-29 03:56:49,158 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1795 transitions. Word has length 79 [2023-11-29 03:56:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:49,158 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 1795 transitions. [2023-11-29 03:56:49,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.642857142857143) internal successors, (79), 16 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 03:56:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1795 transitions. [2023-11-29 03:56:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 03:56:49,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:49,160 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-11-29 03:56:49,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 03:56:49,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:49,369 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)] === [2023-11-29 03:56:49,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -917676985, now seen corresponding path program 2 times [2023-11-29 03:56:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:49,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930413417] [2023-11-29 03:56:49,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:56:49,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:49,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:49,372 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:49,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 03:56:50,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:56:50,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:56:50,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:56:50,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-29 03:56:50,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 03:56:50,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930413417] [2023-11-29 03:56:50,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930413417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:50,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:56:50,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-29 03:56:50,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025790980] [2023-11-29 03:56:50,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:50,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:56:50,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:56:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:56:50,872 INFO L87 Difference]: Start difference. First operand 1413 states and 1795 transitions. Second operand has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 5 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 03:56:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:51,848 INFO L93 Difference]: Finished difference Result 2549 states and 3236 transitions. [2023-11-29 03:56:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:56:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 5 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 85 [2023-11-29 03:56:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:51,861 INFO L225 Difference]: With dead ends: 2549 [2023-11-29 03:56:51,861 INFO L226 Difference]: Without dead ends: 2539 [2023-11-29 03:56:51,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:56:51,863 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 947 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:51,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1782 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:56:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2023-11-29 03:56:52,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2347. [2023-11-29 03:56:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2224 states have (on average 1.2598920863309353) internal successors, (2802), 2241 states have internal predecessors, (2802), 72 states have call successors, (72), 46 states have call predecessors, (72), 43 states have return successors, (94), 59 states have call predecessors, (94), 72 states have call successors, (94) [2023-11-29 03:56:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 2968 transitions. [2023-11-29 03:56:52,049 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 2968 transitions. Word has length 85 [2023-11-29 03:56:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:52,049 INFO L495 AbstractCegarLoop]: Abstraction has 2347 states and 2968 transitions. [2023-11-29 03:56:52,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 5 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 03:56:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 2968 transitions. [2023-11-29 03:56:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 03:56:52,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:52,052 INFO L195 NwaCegarLoop]: trace histogram [15, 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] [2023-11-29 03:56:52,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 03:56:52,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:52,253 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:56:52,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1831315366, now seen corresponding path program 1 times [2023-11-29 03:56:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:56:52,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823206459] [2023-11-29 03:56:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:52,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:56:52,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:56:52,255 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:56:52,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 03:56:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:52,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:56:52,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 76 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:56:53,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:56:54,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:56:54,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823206459] [2023-11-29 03:56:54,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823206459] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:54,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:56:54,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-11-29 03:56:54,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265697750] [2023-11-29 03:56:54,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:54,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:56:54,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:56:54,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:56:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:56:54,139 INFO L87 Difference]: Start difference. First operand 2347 states and 2968 transitions. Second operand has 28 states, 26 states have (on average 4.576923076923077) internal successors, (119), 28 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 03:56:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:59,634 INFO L93 Difference]: Finished difference Result 4775 states and 6160 transitions. [2023-11-29 03:56:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 03:56:59,635 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.576923076923077) internal successors, (119), 28 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 113 [2023-11-29 03:56:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:59,648 INFO L225 Difference]: With dead ends: 4775 [2023-11-29 03:56:59,648 INFO L226 Difference]: Without dead ends: 2490 [2023-11-29 03:56:59,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1048, Invalid=2858, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 03:56:59,655 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 80 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:59,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 4151 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:56:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2023-11-29 03:56:59,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2461. [2023-11-29 03:56:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2338 states have (on average 1.2574850299401197) internal successors, (2940), 2355 states have internal predecessors, (2940), 72 states have call successors, (72), 46 states have call predecessors, (72), 43 states have return successors, (94), 59 states have call predecessors, (94), 72 states have call successors, (94) [2023-11-29 03:56:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3106 transitions. [2023-11-29 03:56:59,901 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3106 transitions. Word has length 113 [2023-11-29 03:56:59,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:59,902 INFO L495 AbstractCegarLoop]: Abstraction has 2461 states and 3106 transitions. [2023-11-29 03:56:59,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.576923076923077) internal successors, (119), 28 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 03:56:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3106 transitions. [2023-11-29 03:56:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 03:56:59,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:59,904 INFO L195 NwaCegarLoop]: trace histogram [33, 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] [2023-11-29 03:56:59,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 03:57:00,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:57:00,105 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:57:00,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1376642886, now seen corresponding path program 2 times [2023-11-29 03:57:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:57:00,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22458698] [2023-11-29 03:57:00,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:57:00,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:57:00,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:57:00,107 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:57:00,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 03:57:00,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:57:00,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:57:00,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:57:00,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:57:00,629 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:57:00,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 19 [2023-11-29 03:57:01,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:57:01,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 18 [2023-11-29 03:57:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2023-11-29 03:57:01,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:57:01,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:57:01,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22458698] [2023-11-29 03:57:01,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22458698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:01,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:01,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:57:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411607712] [2023-11-29 03:57:01,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:01,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:57:01,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:57:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:57:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:57:01,844 INFO L87 Difference]: Start difference. First operand 2461 states and 3106 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-29 03:57:06,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:10,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:14,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:18,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:22,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:26,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:31,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:35,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:39,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:57:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:57:39,504 INFO L93 Difference]: Finished difference Result 3476 states and 4416 transitions. [2023-11-29 03:57:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:57:39,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 131 [2023-11-29 03:57:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:57:39,525 INFO L225 Difference]: With dead ends: 3476 [2023-11-29 03:57:39,525 INFO L226 Difference]: Without dead ends: 3475 [2023-11-29 03:57:39,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 7 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:57:39,527 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 327 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:57:39,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 735 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 9 Unknown, 0 Unchecked, 37.5s Time] [2023-11-29 03:57:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2023-11-29 03:57:39,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 2978. [2023-11-29 03:57:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2831 states have (on average 1.2628046626633698) internal successors, (3575), 2852 states have internal predecessors, (3575), 85 states have call successors, (85), 56 states have call predecessors, (85), 54 states have return successors, (108), 69 states have call predecessors, (108), 85 states have call successors, (108) [2023-11-29 03:57:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 3768 transitions. [2023-11-29 03:57:39,803 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 3768 transitions. Word has length 131 [2023-11-29 03:57:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:57:39,803 INFO L495 AbstractCegarLoop]: Abstraction has 2978 states and 3768 transitions. [2023-11-29 03:57:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-29 03:57:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 3768 transitions. [2023-11-29 03:57:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 03:57:39,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:57:39,806 INFO L195 NwaCegarLoop]: trace histogram [33, 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] [2023-11-29 03:57:39,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 03:57:40,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:57:40,014 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:57:40,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1902030894, now seen corresponding path program 1 times [2023-11-29 03:57:40,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:57:40,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667625348] [2023-11-29 03:57:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:40,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:57:40,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:57:40,016 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:57:40,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 03:57:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:40,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 03:57:40,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:57:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 291 proven. 253 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 03:57:41,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:57:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 5 proven. 532 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 03:57:45,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:57:45,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667625348] [2023-11-29 03:57:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667625348] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:57:45,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:57:45,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-11-29 03:57:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769512184] [2023-11-29 03:57:45,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:57:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 03:57:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:57:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 03:57:45,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1973, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 03:57:45,186 INFO L87 Difference]: Start difference. First operand 2978 states and 3768 transitions. Second operand has 52 states, 50 states have (on average 2.96) internal successors, (148), 52 states have internal predecessors, (148), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 03:58:10,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:10,275 INFO L93 Difference]: Finished difference Result 6197 states and 8090 transitions. [2023-11-29 03:58:10,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-29 03:58:10,276 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.96) internal successors, (148), 52 states have internal predecessors, (148), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2023-11-29 03:58:10,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:10,289 INFO L225 Difference]: With dead ends: 6197 [2023-11-29 03:58:10,289 INFO L226 Difference]: Without dead ends: 3293 [2023-11-29 03:58:10,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2364 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=3626, Invalid=10894, Unknown=0, NotChecked=0, Total=14520 [2023-11-29 03:58:10,298 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 203 mSDsluCounter, 6495 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 6758 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:10,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 6758 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 03:58:10,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2023-11-29 03:58:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3192. [2023-11-29 03:58:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 3045 states have (on average 1.2600985221674876) internal successors, (3837), 3066 states have internal predecessors, (3837), 85 states have call successors, (85), 56 states have call predecessors, (85), 54 states have return successors, (108), 69 states have call predecessors, (108), 85 states have call successors, (108) [2023-11-29 03:58:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4030 transitions. [2023-11-29 03:58:10,597 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4030 transitions. Word has length 136 [2023-11-29 03:58:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:10,597 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4030 transitions. [2023-11-29 03:58:10,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.96) internal successors, (148), 52 states have internal predecessors, (148), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 03:58:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4030 transitions. [2023-11-29 03:58:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-29 03:58:10,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:10,599 INFO L195 NwaCegarLoop]: trace histogram [67, 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] [2023-11-29 03:58:10,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:10,800 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)] === [2023-11-29 03:58:10,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1544614350, now seen corresponding path program 2 times [2023-11-29 03:58:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714212553] [2023-11-29 03:58:10,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:58:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:10,802 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:58:10,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 03:58:12,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:58:12,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:58:12,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:58:12,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2361 backedges. 1088 proven. 276 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2023-11-29 03:58:13,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2361 backedges. 1088 proven. 276 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2023-11-29 03:58:16,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:16,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714212553] [2023-11-29 03:58:16,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714212553] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:16,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:16,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-11-29 03:58:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518128044] [2023-11-29 03:58:16,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:16,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-29 03:58:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-29 03:58:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=733, Invalid=2129, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 03:58:16,871 INFO L87 Difference]: Start difference. First operand 3192 states and 4030 transitions. Second operand has 54 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 54 states have internal predecessors, (140), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:58:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:49,568 INFO L93 Difference]: Finished difference Result 6570 states and 8574 transitions. [2023-11-29 03:58:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-11-29 03:58:49,569 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 54 states have internal predecessors, (140), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 170 [2023-11-29 03:58:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:49,582 INFO L225 Difference]: With dead ends: 6570 [2023-11-29 03:58:49,582 INFO L226 Difference]: Without dead ends: 3526 [2023-11-29 03:58:49,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3300 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=4129, Invalid=12127, Unknown=0, NotChecked=0, Total=16256 [2023-11-29 03:58:49,591 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 200 mSDsluCounter, 6498 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 6760 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:49,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 6760 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 03:58:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2023-11-29 03:58:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3317. [2023-11-29 03:58:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3170 states have (on average 1.2813880126182966) internal successors, (4062), 3191 states have internal predecessors, (4062), 85 states have call successors, (85), 56 states have call predecessors, (85), 54 states have return successors, (108), 69 states have call predecessors, (108), 85 states have call successors, (108) [2023-11-29 03:58:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4255 transitions. [2023-11-29 03:58:50,033 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4255 transitions. Word has length 170 [2023-11-29 03:58:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:50,033 INFO L495 AbstractCegarLoop]: Abstraction has 3317 states and 4255 transitions. [2023-11-29 03:58:50,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 2.6923076923076925) internal successors, (140), 54 states have internal predecessors, (140), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-29 03:58:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4255 transitions. [2023-11-29 03:58:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 03:58:50,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:50,035 INFO L195 NwaCegarLoop]: trace histogram [92, 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] [2023-11-29 03:58:50,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 03:58:50,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:50,236 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)] === [2023-11-29 03:58:50,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:50,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1519642259, now seen corresponding path program 3 times [2023-11-29 03:58:50,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:50,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862731740] [2023-11-29 03:58:50,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:58:50,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:50,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:50,238 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 03:58:50,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 03:58:50,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:58:50,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:58:50,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:58:50,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:50,915 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:50,917 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 40 treesize of output 19 [2023-11-29 03:59:09,652 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.offset_BEFORE_CALL_8| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#i~0#1.base_BEFORE_CALL_8| (_ BitVec 32))) (let ((.cse2 (select |c_#memory_int#1| |v_ULTIMATE.start_main_~#i~0#1.base_BEFORE_CALL_8|))) (let ((.cse0 (select .cse2 |v_ULTIMATE.start_main_~#i~0#1.offset_BEFORE_CALL_8|)) (.cse1 (select .cse2 (bvadd (_ bv3 32) |v_ULTIMATE.start_main_~#i~0#1.offset_BEFORE_CALL_8|)))) (and (= ((_ extract 7 0) (_ bv0 32)) .cse0) (bvslt (concat (concat (concat .cse1 (select .cse2 (bvadd (_ bv2 32) |v_ULTIMATE.start_main_~#i~0#1.offset_BEFORE_CALL_8|))) (select .cse2 (bvadd |v_ULTIMATE.start_main_~#i~0#1.offset_BEFORE_CALL_8| (_ bv1 32)))) .cse0) (_ bv10 32)) (= .cse1 ((_ extract 31 24) (_ bv0 32))))))) is different from true [2023-11-29 03:59:10,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:59:10,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 70 [2023-11-29 03:59:19,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:59:19,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 56 [2023-11-29 03:59:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2172 trivial. 2209 not checked. [2023-11-29 03:59:19,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:59:44,061 WARN L876 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4512 (_ BitVec 8))) (bvsle (_ bv9223372034707292160 63) (let ((.cse0 ((_ sign_extend 31) (let ((.cse1 (bvadd |c_ULTIMATE.start_main_#t~post41#1| (_ bv1 32)))) (concat (concat (concat ((_ extract 31 24) .cse1) ((_ extract 23 16) .cse1)) v_ArrVal_4512) ((_ extract 7 0) .cse1)))))) (bvmul .cse0 .cse0)))) is different from true [2023-11-29 03:59:56,259 WARN L876 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4512 (_ BitVec 8))) (bvsle (_ bv9223372034707292160 63) (let ((.cse0 ((_ sign_extend 31) (let ((.cse1 (bvadd (let ((.cse2 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#i~0#1.base|))) (concat (concat (concat (select .cse2 (bvadd |c_ULTIMATE.start_main_~#i~0#1.offset| (_ bv3 32))) (select .cse2 (bvadd |c_ULTIMATE.start_main_~#i~0#1.offset| (_ bv2 32)))) (select .cse2 (bvadd |c_ULTIMATE.start_main_~#i~0#1.offset| (_ bv1 32)))) (select .cse2 |c_ULTIMATE.start_main_~#i~0#1.offset|))) (_ bv1 32)))) (concat (concat (concat ((_ extract 31 24) .cse1) ((_ extract 23 16) .cse1)) v_ArrVal_4512) ((_ extract 7 0) .cse1)))))) (bvmul .cse0 .cse0)))) is different from true [2023-11-29 04:00:44,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:44,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862731740] [2023-11-29 04:00:44,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862731740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:00:44,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1436392113] [2023-11-29 04:00:44,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:00:44,174 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:00:44,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:00:44,175 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:00:44,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08bf59cd-426d-47c7-bc6e-69d8a7eebef1/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process