./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx --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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:59:20,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:59:20,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 20:59:20,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:59:20,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:59:20,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:59:20,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:59:20,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:59:20,732 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:59:20,733 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:59:20,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:59:20,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:59:20,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:59:20,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:59:20,737 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:59:20,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:59:20,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:59:20,739 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:59:20,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:59:20,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:59:20,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:59:20,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:59:20,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:59:20,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:59:20,743 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 20:59:20,744 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:59:20,745 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:59:20,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:59:20,746 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:59:20,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:59:20,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:59:20,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:59:20,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:59:20,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:20,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:59:20,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:59:20,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:59:20,751 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:59:20,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:59:20,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:59:20,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:59:20,753 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:59:20,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:59:20,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:59:20,754 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_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2023-11-21 20:59:21,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:59:21,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:59:21,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:59:21,130 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:59:21,130 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:59:21,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-11-21 20:59:24,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:59:25,011 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:59:25,012 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2023-11-21 20:59:25,044 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/data/52b3d14a8/892eb80605804a5d928c0b279853b678/FLAGa47d6860d [2023-11-21 20:59:25,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/data/52b3d14a8/892eb80605804a5d928c0b279853b678 [2023-11-21 20:59:25,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:59:25,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:59:25,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:25,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:59:25,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:59:25,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:25" (1/1) ... [2023-11-21 20:59:25,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45443316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:25, skipping insertion in model container [2023-11-21 20:59:25,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:25" (1/1) ... [2023-11-21 20:59:25,162 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:26,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:26,233 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:59:26,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:26,549 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:26,559 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:59:26,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26 WrapperNode [2023-11-21 20:59:26,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:26,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:26,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:59:26,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:59:26,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:26,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:26,793 INFO L138 Inliner]: procedures = 282, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1552 [2023-11-21 20:59:26,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:26,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:59:26,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:59:26,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:59:26,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:26,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:26,830 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:27,015 INFO L187 HeapSplitter]: Split 311 memory accesses to 5 slices as follows [2, 2, 5, 34, 268] [2023-11-21 20:59:27,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:27,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:27,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:27,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:27,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:27,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:27,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:59:27,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:59:27,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:59:27,201 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:59:27,202 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (1/1) ... [2023-11-21 20:59:27,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:27,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:59:27,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:59:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-21 20:59:27,299 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-21 20:59:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:59:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-21 20:59:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 20:59:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 20:59:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 20:59:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 20:59:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 20:59:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:59:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-21 20:59:27,303 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-21 20:59:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 20:59:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 20:59:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 20:59:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 20:59:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 20:59:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 20:59:27,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 20:59:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 20:59:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 20:59:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 20:59:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 20:59:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 20:59:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 20:59:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:59:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-21 20:59:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-21 20:59:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 20:59:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 20:59:27,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 20:59:27,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 20:59:27,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 20:59:27,313 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-21 20:59:27,314 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-21 20:59:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 20:59:27,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 20:59:27,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 20:59:27,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 20:59:27,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 20:59:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:59:27,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:59:27,684 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:59:27,687 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:59:29,751 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:59:31,809 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:59:31,809 INFO L308 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-21 20:59:31,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:31 BoogieIcfgContainer [2023-11-21 20:59:31,812 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:59:31,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:59:31,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:59:31,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:59:31,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:59:25" (1/3) ... [2023-11-21 20:59:31,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1b404f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:31, skipping insertion in model container [2023-11-21 20:59:31,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:26" (2/3) ... [2023-11-21 20:59:31,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1b404f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:31, skipping insertion in model container [2023-11-21 20:59:31,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:31" (3/3) ... [2023-11-21 20:59:31,822 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2023-11-21 20:59:31,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:59:31,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-21 20:59:31,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:59:31,918 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;@7f8ba409, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:59:31,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-21 20:59:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 157 states have (on average 1.6815286624203822) internal successors, (264), 174 states have internal predecessors, (264), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 20:59:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 20:59:31,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:31,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 20:59:31,933 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)] === [2023-11-21 20:59:31,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash 52988184, now seen corresponding path program 1 times [2023-11-21 20:59:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:31,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900355633] [2023-11-21 20:59:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:32,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 20:59:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932351929] [2023-11-21 20:59:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:32,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:32,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:32,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:32,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 20:59:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:32,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 20:59:32,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:32,517 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 [2023-11-21 20:59:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:32,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:32,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900355633] [2023-11-21 20:59:32,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 20:59:32,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932351929] [2023-11-21 20:59:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932351929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:32,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:32,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:59:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396634567] [2023-11-21 20:59:32,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:32,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:32,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:32,621 INFO L87 Difference]: Start difference. First operand has 196 states, 157 states have (on average 1.6815286624203822) internal successors, (264), 174 states have internal predecessors, (264), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:34,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:36,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:38,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:40,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:42,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:44,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:46,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:48,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:50,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:52,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:54,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:57,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:59,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:01,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:03,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:05,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:07,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:09,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:11,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:13,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:15,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:17,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:19,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:21,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:23,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:26,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-21 21:00:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:28,562 INFO L93 Difference]: Finished difference Result 774 states and 1295 transitions. [2023-11-21 21:00:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:00:28,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 21:00:28,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:00:28,599 INFO L225 Difference]: With dead ends: 774 [2023-11-21 21:00:28,602 INFO L226 Difference]: Without dead ends: 566 [2023-11-21 21:00:28,613 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 [2023-11-21 21:00:28,618 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 402 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 12 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:00:28,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 791 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 237 Invalid, 21 Unknown, 0 Unchecked, 55.7s Time] [2023-11-21 21:00:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-11-21 21:00:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 325. [2023-11-21 21:00:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 283 states have (on average 1.2190812720848057) internal successors, (345), 297 states have internal predecessors, (345), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-21 21:00:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 393 transitions. [2023-11-21 21:00:28,773 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 393 transitions. Word has length 4 [2023-11-21 21:00:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:00:28,774 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 393 transitions. [2023-11-21 21:00:28,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 393 transitions. [2023-11-21 21:00:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 21:00:28,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:00:28,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 21:00:28,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57baaf93-b657-4931-ac44-7816a9dd6e87/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0