./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:39:07,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:39:07,452 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:39:07,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:39:07,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:39:07,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:39:07,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:39:07,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:39:07,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:39:07,489 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:39:07,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:39:07,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:39:07,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:39:07,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:39:07,492 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:39:07,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:39:07,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:39:07,494 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:39:07,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:39:07,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:39:07,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:39:07,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:39:07,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:39:07,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:39:07,499 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:39:07,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:39:07,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:39:07,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:39:07,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:39:07,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:39:07,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:39:07,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:39:07,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:39:07,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:39:07,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:39:07,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:39:07,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:39:07,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:39:07,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:39:07,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:39:07,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:39:07,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:39:07,511 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_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2023-11-24 21:39:07,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:39:07,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:39:07,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:39:07,819 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:39:07,820 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:39:07,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2023-11-24 21:39:11,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:39:11,631 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:39:11,631 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2023-11-24 21:39:11,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/data/e23195255/a8d0d971d4a046329d6497e5bdc1505f/FLAG4b0e15318 [2023-11-24 21:39:11,678 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/data/e23195255/a8d0d971d4a046329d6497e5bdc1505f [2023-11-24 21:39:11,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:39:11,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:39:11,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:39:11,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:39:11,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:39:11,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:39:11" (1/1) ... [2023-11-24 21:39:11,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6561d3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:11, skipping insertion in model container [2023-11-24 21:39:11,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:39:11" (1/1) ... [2023-11-24 21:39:11,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:39:12,219 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2023-11-24 21:39:12,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:39:12,343 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:39:12,393 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2023-11-24 21:39:12,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:39:12,578 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:39:12,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12 WrapperNode [2023-11-24 21:39:12,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:39:12,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:39:12,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:39:12,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:39:12,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:12,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:12,800 INFO L138 Inliner]: procedures = 177, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 790 [2023-11-24 21:39:12,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:39:12,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:39:12,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:39:12,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:39:12,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:12,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:12,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:12,949 INFO L175 MemorySlicer]: Split 163 memory accesses to 3 slices as follows [156, 2, 5]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 43 writes are split as follows [42, 0, 1]. [2023-11-24 21:39:12,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:12,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:12,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:13,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:13,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:13,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:13,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:39:13,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:39:13,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:39:13,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:39:13,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (1/1) ... [2023-11-24 21:39:13,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:39:13,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:13,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:39:13,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:39:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:39:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:39:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:39:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 21:39:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 21:39:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:39:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:39:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:39:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-24 21:39:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-24 21:39:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-24 21:39:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-24 21:39:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-24 21:39:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-24 21:39:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:39:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:39:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:39:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:39:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:39:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:39:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:39:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:39:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:39:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:39:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:39:13,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:39:13,513 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:39:13,516 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:39:15,416 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:39:15,471 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:39:15,471 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-24 21:39:15,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:39:15 BoogieIcfgContainer [2023-11-24 21:39:15,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:39:15,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:39:15,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:39:15,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:39:15,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:39:11" (1/3) ... [2023-11-24 21:39:15,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5d4ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:39:15, skipping insertion in model container [2023-11-24 21:39:15,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:39:12" (2/3) ... [2023-11-24 21:39:15,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5d4ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:39:15, skipping insertion in model container [2023-11-24 21:39:15,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:39:15" (3/3) ... [2023-11-24 21:39:15,485 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-1.i [2023-11-24 21:39:15,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:39:15,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:39:15,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:39:15,609 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;@2caa55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:39:15,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:39:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 190 states have (on average 1.7052631578947368) internal successors, (324), 201 states have internal predecessors, (324), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:39:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 21:39:15,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:15,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:39:15,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:15,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash -189480315, now seen corresponding path program 1 times [2023-11-24 21:39:15,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:15,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480331272] [2023-11-24 21:39:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:15,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480331272] [2023-11-24 21:39:15,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480331272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:15,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:15,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:39:15,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778858385] [2023-11-24 21:39:15,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:15,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:39:15,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:39:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:39:15,919 INFO L87 Difference]: Start difference. First operand has 207 states, 190 states have (on average 1.7052631578947368) internal successors, (324), 201 states have internal predecessors, (324), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-24 21:39:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:16,040 INFO L93 Difference]: Finished difference Result 585 states and 1003 transitions. [2023-11-24 21:39:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:39:16,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2023-11-24 21:39:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:16,058 INFO L225 Difference]: With dead ends: 585 [2023-11-24 21:39:16,058 INFO L226 Difference]: Without dead ends: 377 [2023-11-24 21:39:16,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:39:16,067 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 252 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:16,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 653 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:39:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-24 21:39:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 206. [2023-11-24 21:39:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 190 states have (on average 1.5105263157894737) internal successors, (287), 200 states have internal predecessors, (287), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:39:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 313 transitions. [2023-11-24 21:39:16,160 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 313 transitions. Word has length 9 [2023-11-24 21:39:16,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:16,160 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 313 transitions. [2023-11-24 21:39:16,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-24 21:39:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 313 transitions. [2023-11-24 21:39:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 21:39:16,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:16,167 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, 1, 1, 1, 1] [2023-11-24 21:39:16,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:39:16,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:16,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash -40822134, now seen corresponding path program 1 times [2023-11-24 21:39:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:16,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243227070] [2023-11-24 21:39:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:16,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:16,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:39:16,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130800752] [2023-11-24 21:39:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:16,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:16,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:16,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:39:16,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:39:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:16,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:39:16,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:39:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:16,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:39:16,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243227070] [2023-11-24 21:39:16,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:39:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130800752] [2023-11-24 21:39:16,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130800752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:16,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:16,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:39:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894550162] [2023-11-24 21:39:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:16,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:39:16,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:39:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:39:16,699 INFO L87 Difference]: Start difference. First operand 206 states and 313 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-24 21:39:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:16,815 INFO L93 Difference]: Finished difference Result 431 states and 655 transitions. [2023-11-24 21:39:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:39:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 84 [2023-11-24 21:39:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:16,819 INFO L225 Difference]: With dead ends: 431 [2023-11-24 21:39:16,819 INFO L226 Difference]: Without dead ends: 227 [2023-11-24 21:39:16,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:39:16,823 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 9 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:16,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 564 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:39:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-24 21:39:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2023-11-24 21:39:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 210 states have (on average 1.4619047619047618) internal successors, (307), 220 states have internal predecessors, (307), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:39:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 333 transitions. [2023-11-24 21:39:16,845 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 333 transitions. Word has length 84 [2023-11-24 21:39:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:16,846 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 333 transitions. [2023-11-24 21:39:16,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-24 21:39:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 333 transitions. [2023-11-24 21:39:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 21:39:16,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:16,852 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, 1, 1, 1, 1] [2023-11-24 21:39:16,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:39:17,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:17,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:17,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash 451804040, now seen corresponding path program 1 times [2023-11-24 21:39:17,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:17,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64170017] [2023-11-24 21:39:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:17,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:17,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:39:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889912576] [2023-11-24 21:39:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:17,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:17,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:39:17,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:39:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:17,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:39:17,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:39:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:17,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:39:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:17,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64170017] [2023-11-24 21:39:17,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:39:17,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889912576] [2023-11-24 21:39:17,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889912576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:17,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:17,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:39:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061062703] [2023-11-24 21:39:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:17,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:39:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:39:17,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:39:17,550 INFO L87 Difference]: Start difference. First operand 226 states and 333 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2023-11-24 21:39:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:17,672 INFO L93 Difference]: Finished difference Result 437 states and 651 transitions. [2023-11-24 21:39:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:39:17,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 84 [2023-11-24 21:39:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:17,676 INFO L225 Difference]: With dead ends: 437 [2023-11-24 21:39:17,676 INFO L226 Difference]: Without dead ends: 213 [2023-11-24 21:39:17,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:39:17,686 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 165 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:17,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 694 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:39:17,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-24 21:39:17,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2023-11-24 21:39:17,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 206 states have internal predecessors, (286), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 21:39:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 312 transitions. [2023-11-24 21:39:17,718 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 312 transitions. Word has length 84 [2023-11-24 21:39:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:17,718 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 312 transitions. [2023-11-24 21:39:17,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2023-11-24 21:39:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 312 transitions. [2023-11-24 21:39:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 21:39:17,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:17,722 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, 1, 1, 1, 1] [2023-11-24 21:39:17,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:39:17,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:17,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:17,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash -209873770, now seen corresponding path program 1 times [2023-11-24 21:39:17,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:17,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130251424] [2023-11-24 21:39:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:17,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:17,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:39:17,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882711132] [2023-11-24 21:39:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:17,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:17,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:17,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:39:18,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:39:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:18,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:39:18,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:39:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:18,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:39:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130251424] [2023-11-24 21:39:18,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:39:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882711132] [2023-11-24 21:39:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882711132] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:39:18,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:39:18,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-24 21:39:18,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686135262] [2023-11-24 21:39:18,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:39:18,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:39:18,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:39:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:39:18,805 INFO L87 Difference]: Start difference. First operand 212 states and 312 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-24 21:39:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:18,939 INFO L93 Difference]: Finished difference Result 775 states and 1137 transitions. [2023-11-24 21:39:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:39:18,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 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 84 [2023-11-24 21:39:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:18,946 INFO L225 Difference]: With dead ends: 775 [2023-11-24 21:39:18,946 INFO L226 Difference]: Without dead ends: 746 [2023-11-24 21:39:18,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:39:18,948 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 1003 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:18,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1184 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:39:18,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-24 21:39:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2023-11-24 21:39:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 721 states have (on average 1.4452149791955617) internal successors, (1042), 731 states have internal predecessors, (1042), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 21:39:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1086 transitions. [2023-11-24 21:39:18,984 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1086 transitions. Word has length 84 [2023-11-24 21:39:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:18,985 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1086 transitions. [2023-11-24 21:39:18,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-24 21:39:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1086 transitions. [2023-11-24 21:39:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-11-24 21:39:18,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:18,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:39:19,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 21:39:19,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:19,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:19,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:19,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1375306053, now seen corresponding path program 2 times [2023-11-24 21:39:19,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:19,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514775144] [2023-11-24 21:39:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:19,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:39:19,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712972097] [2023-11-24 21:39:19,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:39:19,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:19,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:19,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:39:19,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:39:19,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-24 21:39:19,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:39:19,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:39:19,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:39:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-11-24 21:39:21,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:39:21,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:21,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514775144] [2023-11-24 21:39:21,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:39:21,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712972097] [2023-11-24 21:39:21,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712972097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:21,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:21,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:39:21,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632110803] [2023-11-24 21:39:21,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:39:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:39:21,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:39:21,405 INFO L87 Difference]: Start difference. First operand 746 states and 1086 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-24 21:39:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:21,709 INFO L93 Difference]: Finished difference Result 1362 states and 1980 transitions. [2023-11-24 21:39:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:39:21,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 309 [2023-11-24 21:39:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:21,716 INFO L225 Difference]: With dead ends: 1362 [2023-11-24 21:39:21,716 INFO L226 Difference]: Without dead ends: 744 [2023-11-24 21:39:21,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:39:21,719 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 123 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:21,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 856 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:39:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-11-24 21:39:21,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2023-11-24 21:39:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 719 states have (on average 1.4450625869262865) internal successors, (1039), 729 states have internal predecessors, (1039), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 21:39:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1083 transitions. [2023-11-24 21:39:21,752 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1083 transitions. Word has length 309 [2023-11-24 21:39:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:21,752 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1083 transitions. [2023-11-24 21:39:21,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-24 21:39:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1083 transitions. [2023-11-24 21:39:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-11-24 21:39:21,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:21,793 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:39:21,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:39:21,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:22,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:22,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:22,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1924485110, now seen corresponding path program 1 times [2023-11-24 21:39:22,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:22,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544018960] [2023-11-24 21:39:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:22,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:22,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:39:22,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805034233] [2023-11-24 21:39:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:22,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:22,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:22,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:39:22,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:39:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:23,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:39:23,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:39:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:39:23,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:39:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:39:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544018960] [2023-11-24 21:39:24,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:39:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805034233] [2023-11-24 21:39:24,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805034233] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:39:24,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:39:24,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-24 21:39:24,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939664024] [2023-11-24 21:39:24,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:39:24,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:39:24,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:24,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:39:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:39:24,060 INFO L87 Difference]: Start difference. First operand 744 states and 1083 transitions. Second operand has 12 states, 12 states have (on average 51.833333333333336) internal successors, (622), 12 states have internal predecessors, (622), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 21:39:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:24,384 INFO L93 Difference]: Finished difference Result 1841 states and 2685 transitions. [2023-11-24 21:39:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:39:24,385 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 51.833333333333336) internal successors, (622), 12 states have internal predecessors, (622), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 322 [2023-11-24 21:39:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:24,399 INFO L225 Difference]: With dead ends: 1841 [2023-11-24 21:39:24,400 INFO L226 Difference]: Without dead ends: 1812 [2023-11-24 21:39:24,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 632 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:39:24,402 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 3569 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:24,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3595 Valid, 2808 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:39:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2023-11-24 21:39:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1812. [2023-11-24 21:39:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1769 states have (on average 1.4420576596947428) internal successors, (2551), 1779 states have internal predecessors, (2551), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-24 21:39:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2631 transitions. [2023-11-24 21:39:24,500 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2631 transitions. Word has length 322 [2023-11-24 21:39:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:24,501 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2631 transitions. [2023-11-24 21:39:24,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.833333333333336) internal successors, (622), 12 states have internal predecessors, (622), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 21:39:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2631 transitions. [2023-11-24 21:39:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-24 21:39:24,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:24,532 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:39:24,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:39:24,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 21:39:24,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:24,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1045478634, now seen corresponding path program 2 times [2023-11-24 21:39:24,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:24,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491987613] [2023-11-24 21:39:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:25,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:39:25,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048028759] [2023-11-24 21:39:25,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:39:25,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:39:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:39:25,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:39:25,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 21:40:00,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:40:00,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:40:01,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 3775 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-24 21:40:01,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:01,094 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 18 treesize of output 7 [2023-11-24 21:40:01,544 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:40:01,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 23 [2023-11-24 21:40:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3370 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 3081 trivial. 0 not checked. [2023-11-24 21:40:01,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:01,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:40:01,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491987613] [2023-11-24 21:40:01,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:40:01,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048028759] [2023-11-24 21:40:01,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048028759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:01,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:01,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 21:40:01,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391510772] [2023-11-24 21:40:01,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:01,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:40:01,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:40:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:40:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:40:01,737 INFO L87 Difference]: Start difference. First operand 1812 states and 2631 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 11 states have internal predecessors, (125), 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) [2023-11-24 21:40:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:05,139 INFO L93 Difference]: Finished difference Result 3585 states and 5196 transitions. [2023-11-24 21:40:05,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:40:05,140 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 11 states have internal predecessors, (125), 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 772 [2023-11-24 21:40:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:05,151 INFO L225 Difference]: With dead ends: 3585 [2023-11-24 21:40:05,155 INFO L226 Difference]: Without dead ends: 1853 [2023-11-24 21:40:05,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-24 21:40:05,159 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 778 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:05,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1896 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-24 21:40:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-11-24 21:40:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1844. [2023-11-24 21:40:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1801 states have (on average 1.4369794558578568) internal successors, (2588), 1811 states have internal predecessors, (2588), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-24 21:40:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2668 transitions. [2023-11-24 21:40:05,237 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2668 transitions. Word has length 772 [2023-11-24 21:40:05,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:05,238 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2668 transitions. [2023-11-24 21:40:05,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 11 states have internal predecessors, (125), 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) [2023-11-24 21:40:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2668 transitions. [2023-11-24 21:40:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-24 21:40:05,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:05,271 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:40:05,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:05,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:40:05,496 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:40:05,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1280217580, now seen corresponding path program 1 times [2023-11-24 21:40:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:40:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465638852] [2023-11-24 21:40:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:40:05,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:40:05,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140962500] [2023-11-24 21:40:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:05,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:40:05,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:40:05,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:40:05,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 21:40:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:07,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 3773 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:40:07,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:40:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3370 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 3144 trivial. 0 not checked. [2023-11-24 21:40:07,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:40:07,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:40:07,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465638852] [2023-11-24 21:40:07,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:40:07,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140962500] [2023-11-24 21:40:07,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140962500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:07,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:07,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:40:07,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152349157] [2023-11-24 21:40:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:07,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:40:07,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:40:07,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:40:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:40:07,611 INFO L87 Difference]: Start difference. First operand 1844 states and 2668 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2023-11-24 21:40:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:40:07,792 INFO L93 Difference]: Finished difference Result 4656 states and 6851 transitions. [2023-11-24 21:40:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:40:07,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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 772 [2023-11-24 21:40:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:40:07,811 INFO L225 Difference]: With dead ends: 4656 [2023-11-24 21:40:07,811 INFO L226 Difference]: Without dead ends: 2912 [2023-11-24 21:40:07,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:40:07,816 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 148 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:40:07,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 847 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:40:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2023-11-24 21:40:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2051. [2023-11-24 21:40:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2008 states have (on average 1.399402390438247) internal successors, (2810), 2018 states have internal predecessors, (2810), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-24 21:40:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2890 transitions. [2023-11-24 21:40:07,906 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2890 transitions. Word has length 772 [2023-11-24 21:40:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:40:07,906 INFO L495 AbstractCegarLoop]: Abstraction has 2051 states and 2890 transitions. [2023-11-24 21:40:07,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2023-11-24 21:40:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2890 transitions. [2023-11-24 21:40:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-24 21:40:07,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:40:07,918 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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] [2023-11-24 21:40:07,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:40:08,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 21:40:08,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:40:08,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:08,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1442659914, now seen corresponding path program 1 times [2023-11-24 21:40:08,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:40:08,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721646656] [2023-11-24 21:40:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:08,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:40:08,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:40:08,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876650532] [2023-11-24 21:40:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:08,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:40:08,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:40:08,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:40:08,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f78f58e-d60d-4c6b-b677-8c9f851afb83/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process