./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme --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 b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:10,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:10,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:48:10,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:10,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:10,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:10,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:10,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:10,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:48:10,971 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:48:10,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:10,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:10,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:10,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:10,976 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:10,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:10,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:10,977 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:48:10,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:10,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:48:10,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:10,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:10,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:10,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:10,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:48:10,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:10,983 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:10,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:10,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:10,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:48:10,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:10,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:10,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:10,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:10,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:10,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:10,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:10,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:10,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:10,998 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:10,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:10,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:10,999 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_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 [2023-11-26 10:48:11,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:11,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:11,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:11,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:11,305 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:11,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2023-11-26 10:48:14,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:14,813 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:14,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2023-11-26 10:48:14,834 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/data/1adde895c/3af6706500334f1eba6d84c0e30c48b8/FLAG127096a81 [2023-11-26 10:48:14,850 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/data/1adde895c/3af6706500334f1eba6d84c0e30c48b8 [2023-11-26 10:48:14,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:14,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:14,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:14,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:14,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:14,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:14" (1/1) ... [2023-11-26 10:48:14,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35543174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:14, skipping insertion in model container [2023-11-26 10:48:14,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:14" (1/1) ... [2023-11-26 10:48:14,940 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:15,535 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_657119ce-3257-4a60-878d-7fe70d68cba3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2023-11-26 10:48:15,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:15,750 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:15,804 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_657119ce-3257-4a60-878d-7fe70d68cba3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2023-11-26 10:48:15,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:15,950 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:15,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15 WrapperNode [2023-11-26 10:48:15,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:15,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:15,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:15,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:15,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,145 INFO L138 Inliner]: procedures = 177, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1492 [2023-11-26 10:48:16,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:16,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:16,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:16,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:16,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,176 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,305 INFO L175 MemorySlicer]: Split 319 memory accesses to 4 slices as follows [2, 5, 5, 307]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 84 writes are split as follows [0, 1, 1, 82]. [2023-11-26 10:48:16,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:16,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:16,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:16,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:16,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (1/1) ... [2023-11-26 10:48:16,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:16,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:16,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:16,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:16,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:48:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:48:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:48:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:48:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:48:16,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:48:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:48:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:48:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:48:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:48:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 10:48:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 10:48:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 10:48:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 10:48:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 10:48:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 10:48:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 10:48:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 10:48:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:48:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:48:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:48:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:48:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:48:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 10:48:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:48:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:48:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:48:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 10:48:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:48:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:48:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:48:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:48:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:48:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:16,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:16,856 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:16,859 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:18,685 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:18,751 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:18,752 INFO L309 CfgBuilder]: Removed 60 assume(true) statements. [2023-11-26 10:48:18,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:18 BoogieIcfgContainer [2023-11-26 10:48:18,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:18,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:18,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:18,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:18,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:14" (1/3) ... [2023-11-26 10:48:18,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8e888d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:18, skipping insertion in model container [2023-11-26 10:48:18,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:15" (2/3) ... [2023-11-26 10:48:18,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8e888d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:18, skipping insertion in model container [2023-11-26 10:48:18,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:18" (3/3) ... [2023-11-26 10:48:18,765 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-1.i [2023-11-26 10:48:18,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:18,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:48:18,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:18,875 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;@2f40ce3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:18,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:48:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 355 states have (on average 1.704225352112676) internal successors, (605), 366 states have internal predecessors, (605), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 10:48:18,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 10:48:18,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:18,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:18,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash -406387259, now seen corresponding path program 1 times [2023-11-26 10:48:18,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:18,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160553891] [2023-11-26 10:48:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:18,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:19,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160553891] [2023-11-26 10:48:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160553891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:19,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:19,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448602580] [2023-11-26 10:48:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:19,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:19,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:19,231 INFO L87 Difference]: Start difference. First operand has 375 states, 355 states have (on average 1.704225352112676) internal successors, (605), 366 states have internal predecessors, (605), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) 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) [2023-11-26 10:48:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:19,391 INFO L93 Difference]: Finished difference Result 1089 states and 1864 transitions. [2023-11-26 10:48:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:19,394 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 [2023-11-26 10:48:19,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:19,423 INFO L225 Difference]: With dead ends: 1089 [2023-11-26 10:48:19,423 INFO L226 Difference]: Without dead ends: 713 [2023-11-26 10:48:19,432 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 [2023-11-26 10:48:19,439 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 501 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1172 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 [2023-11-26 10:48:19,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1172 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:48:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-11-26 10:48:19,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 374. [2023-11-26 10:48:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.5098591549295775) internal successors, (536), 365 states have internal predecessors, (536), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 10:48:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 568 transitions. [2023-11-26 10:48:19,551 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 568 transitions. Word has length 9 [2023-11-26 10:48:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:19,552 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 568 transitions. [2023-11-26 10:48:19,553 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) [2023-11-26 10:48:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 568 transitions. [2023-11-26 10:48:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 10:48:19,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:19,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:19,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:48:19,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:19,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:19,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1207065578, now seen corresponding path program 1 times [2023-11-26 10:48:19,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:19,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538416961] [2023-11-26 10:48:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:19,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:19,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:19,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751761363] [2023-11-26 10:48:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:19,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:19,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:19,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:19,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:48:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:20,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:20,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:20,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:20,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538416961] [2023-11-26 10:48:20,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751761363] [2023-11-26 10:48:20,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751761363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:20,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:20,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445696967] [2023-11-26 10:48:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:20,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:20,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:20,419 INFO L87 Difference]: Start difference. First operand 374 states and 568 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-26 10:48:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:20,542 INFO L93 Difference]: Finished difference Result 767 states and 1165 transitions. [2023-11-26 10:48:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 155 [2023-11-26 10:48:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:20,547 INFO L225 Difference]: With dead ends: 767 [2023-11-26 10:48:20,548 INFO L226 Difference]: Without dead ends: 395 [2023-11-26 10:48:20,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:20,552 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 9 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1074 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 [2023-11-26 10:48:20,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1074 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-26 10:48:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2023-11-26 10:48:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 375 states have (on average 1.4826666666666666) internal successors, (556), 385 states have internal predecessors, (556), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 10:48:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 588 transitions. [2023-11-26 10:48:20,583 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 588 transitions. Word has length 155 [2023-11-26 10:48:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:20,584 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 588 transitions. [2023-11-26 10:48:20,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-26 10:48:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 588 transitions. [2023-11-26 10:48:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 10:48:20,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:20,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:20,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:48:20,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:20,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:20,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:20,796 INFO L85 PathProgramCache]: Analyzing trace with hash -952018516, now seen corresponding path program 1 times [2023-11-26 10:48:20,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:20,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112644293] [2023-11-26 10:48:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:20,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:20,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:20,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929753195] [2023-11-26 10:48:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:20,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:20,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:20,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:48:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:21,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:21,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:21,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:21,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:21,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112644293] [2023-11-26 10:48:21,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:21,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929753195] [2023-11-26 10:48:21,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929753195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:21,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:21,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:21,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243151368] [2023-11-26 10:48:21,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:21,445 INFO L87 Difference]: Start difference. First operand 394 states and 588 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-26 10:48:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:21,549 INFO L93 Difference]: Finished difference Result 807 states and 1205 transitions. [2023-11-26 10:48:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 155 [2023-11-26 10:48:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:21,554 INFO L225 Difference]: With dead ends: 807 [2023-11-26 10:48:21,554 INFO L226 Difference]: Without dead ends: 415 [2023-11-26 10:48:21,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:21,557 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 8 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1076 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 [2023-11-26 10:48:21,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1076 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-26 10:48:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 414. [2023-11-26 10:48:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 395 states have (on average 1.4582278481012658) internal successors, (576), 405 states have internal predecessors, (576), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 10:48:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 608 transitions. [2023-11-26 10:48:21,577 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 608 transitions. Word has length 155 [2023-11-26 10:48:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:21,577 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 608 transitions. [2023-11-26 10:48:21,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-26 10:48:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 608 transitions. [2023-11-26 10:48:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 10:48:21,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:21,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:21,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:21,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:21,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:21,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:21,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1381374122, now seen corresponding path program 1 times [2023-11-26 10:48:21,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:21,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602743491] [2023-11-26 10:48:21,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:21,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:21,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073785736] [2023-11-26 10:48:21,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:21,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:21,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:21,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:21,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:48:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:22,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:22,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:22,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:22,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602743491] [2023-11-26 10:48:22,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073785736] [2023-11-26 10:48:22,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073785736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:22,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:22,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:48:22,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637179383] [2023-11-26 10:48:22,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:22,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:22,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:22,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:22,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:22,447 INFO L87 Difference]: Start difference. First operand 414 states and 608 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2023-11-26 10:48:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:22,563 INFO L93 Difference]: Finished difference Result 813 states and 1201 transitions. [2023-11-26 10:48:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:22,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 155 [2023-11-26 10:48:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:22,568 INFO L225 Difference]: With dead ends: 813 [2023-11-26 10:48:22,568 INFO L226 Difference]: Without dead ends: 401 [2023-11-26 10:48:22,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:22,570 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 165 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1459 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 [2023-11-26 10:48:22,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1459 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:22,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-26 10:48:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 400. [2023-11-26 10:48:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 381 states have (on average 1.4566929133858268) internal successors, (555), 391 states have internal predecessors, (555), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 10:48:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 587 transitions. [2023-11-26 10:48:22,587 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 587 transitions. Word has length 155 [2023-11-26 10:48:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:22,588 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 587 transitions. [2023-11-26 10:48:22,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2023-11-26 10:48:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 587 transitions. [2023-11-26 10:48:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 10:48:22,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:22,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:22,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:22,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:22,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:22,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:22,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1226195932, now seen corresponding path program 1 times [2023-11-26 10:48:22,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:22,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297670133] [2023-11-26 10:48:22,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:22,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:22,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:22,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284712045] [2023-11-26 10:48:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:22,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:22,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:22,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:22,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:48:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:23,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:48:23,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:23,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297670133] [2023-11-26 10:48:23,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284712045] [2023-11-26 10:48:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284712045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:23,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:23,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83706771] [2023-11-26 10:48:23,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:23,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:23,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:23,480 INFO L87 Difference]: Start difference. First operand 400 states and 587 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2023-11-26 10:48:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:23,589 INFO L93 Difference]: Finished difference Result 785 states and 1159 transitions. [2023-11-26 10:48:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 155 [2023-11-26 10:48:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:23,594 INFO L225 Difference]: With dead ends: 785 [2023-11-26 10:48:23,594 INFO L226 Difference]: Without dead ends: 387 [2023-11-26 10:48:23,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:23,596 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 169 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:23,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1438 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:23,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-26 10:48:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 386. [2023-11-26 10:48:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 367 states have (on average 1.4550408719346049) internal successors, (534), 377 states have internal predecessors, (534), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 10:48:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 566 transitions. [2023-11-26 10:48:23,614 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 566 transitions. Word has length 155 [2023-11-26 10:48:23,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:23,615 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 566 transitions. [2023-11-26 10:48:23,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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) [2023-11-26 10:48:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 566 transitions. [2023-11-26 10:48:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 10:48:23,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:23,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:23,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:23,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:23,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:23,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash 791988330, now seen corresponding path program 1 times [2023-11-26 10:48:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:23,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371562037] [2023-11-26 10:48:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:23,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660119863] [2023-11-26 10:48:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:23,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:23,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:23,913 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:23,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:48:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:24,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:48:24,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:24,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:24,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:24,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371562037] [2023-11-26 10:48:24,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:24,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660119863] [2023-11-26 10:48:24,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660119863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:24,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:24,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:48:24,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781028229] [2023-11-26 10:48:24,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:24,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:24,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:24,460 INFO L87 Difference]: Start difference. First operand 386 states and 566 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2023-11-26 10:48:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:24,570 INFO L93 Difference]: Finished difference Result 725 states and 1055 transitions. [2023-11-26 10:48:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 155 [2023-11-26 10:48:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:24,575 INFO L225 Difference]: With dead ends: 725 [2023-11-26 10:48:24,575 INFO L226 Difference]: Without dead ends: 341 [2023-11-26 10:48:24,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:24,579 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 78 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:24,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1306 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-26 10:48:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2023-11-26 10:48:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 322 states have (on average 1.4192546583850931) internal successors, (457), 332 states have internal predecessors, (457), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 10:48:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 489 transitions. [2023-11-26 10:48:24,597 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 489 transitions. Word has length 155 [2023-11-26 10:48:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:24,598 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 489 transitions. [2023-11-26 10:48:24,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2023-11-26 10:48:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 489 transitions. [2023-11-26 10:48:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-26 10:48:24,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:24,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:24,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:24,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 10:48:24,810 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:24,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1169586328, now seen corresponding path program 1 times [2023-11-26 10:48:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:24,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162979792] [2023-11-26 10:48:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:24,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:24,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924915185] [2023-11-26 10:48:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:24,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:24,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:24,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:24,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:48:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:25,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:25,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:25,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:26,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162979792] [2023-11-26 10:48:26,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924915185] [2023-11-26 10:48:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924915185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:26,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:26,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 10:48:26,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71245859] [2023-11-26 10:48:26,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:26,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:26,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:26,061 INFO L87 Difference]: Start difference. First operand 341 states and 489 transitions. Second operand has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 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) [2023-11-26 10:48:26,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:26,273 INFO L93 Difference]: Finished difference Result 1291 states and 1845 transitions. [2023-11-26 10:48:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:26,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 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 155 [2023-11-26 10:48:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:26,283 INFO L225 Difference]: With dead ends: 1291 [2023-11-26 10:48:26,283 INFO L226 Difference]: Without dead ends: 1262 [2023-11-26 10:48:26,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:26,285 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 2544 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2568 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:26,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2568 Valid, 1987 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-11-26 10:48:26,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1262. [2023-11-26 10:48:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1225 states have (on average 1.4089795918367347) internal successors, (1726), 1235 states have internal predecessors, (1726), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 10:48:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1794 transitions. [2023-11-26 10:48:26,343 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1794 transitions. Word has length 155 [2023-11-26 10:48:26,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:26,343 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1794 transitions. [2023-11-26 10:48:26,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 5 states have internal predecessors, (302), 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) [2023-11-26 10:48:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1794 transitions. [2023-11-26 10:48:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2023-11-26 10:48:26,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:26,361 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-26 10:48:26,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:26,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:48:26,570 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:26,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash 664706001, now seen corresponding path program 2 times [2023-11-26 10:48:26,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:26,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039750467] [2023-11-26 10:48:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:26,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:26,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:26,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919771015] [2023-11-26 10:48:26,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:26,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:26,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:26,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:26,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:48:27,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:48:27,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:27,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:48:27,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2023-11-26 10:48:30,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:30,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:30,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039750467] [2023-11-26 10:48:30,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:30,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919771015] [2023-11-26 10:48:30,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919771015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:30,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:30,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:30,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668889175] [2023-11-26 10:48:30,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:30,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:30,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:30,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:30,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:30,067 INFO L87 Difference]: Start difference. First operand 1262 states and 1794 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-26 10:48:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:30,515 INFO L93 Difference]: Finished difference Result 2265 states and 3219 transitions. [2023-11-26 10:48:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:30,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 593 [2023-11-26 10:48:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:30,524 INFO L225 Difference]: With dead ends: 2265 [2023-11-26 10:48:30,524 INFO L226 Difference]: Without dead ends: 1260 [2023-11-26 10:48:30,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:30,528 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 223 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:30,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1359 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:48:30,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-11-26 10:48:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2023-11-26 10:48:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1223 states have (on average 1.4088307440719543) internal successors, (1723), 1233 states have internal predecessors, (1723), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-26 10:48:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1791 transitions. [2023-11-26 10:48:30,575 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1791 transitions. Word has length 593 [2023-11-26 10:48:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:30,576 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1791 transitions. [2023-11-26 10:48:30,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-26 10:48:30,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1791 transitions. [2023-11-26 10:48:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-11-26 10:48:30,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:30,593 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-26 10:48:30,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:30,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:30,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:30,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:30,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2075359618, now seen corresponding path program 1 times [2023-11-26 10:48:30,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:30,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432597090] [2023-11-26 10:48:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:30,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:31,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:31,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842785924] [2023-11-26 10:48:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:31,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:31,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:31,065 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:31,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:48:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:32,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:48:32,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:48:33,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:48:34,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:34,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432597090] [2023-11-26 10:48:34,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:34,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842785924] [2023-11-26 10:48:34,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842785924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:34,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:34,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-26 10:48:34,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885979821] [2023-11-26 10:48:34,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:34,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:48:34,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:48:34,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:48:34,414 INFO L87 Difference]: Start difference. First operand 1260 states and 1791 transitions. Second operand has 12 states, 12 states have (on average 99.16666666666667) internal successors, (1190), 12 states have internal predecessors, (1190), 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) [2023-11-26 10:48:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:34,977 INFO L93 Difference]: Finished difference Result 3131 states and 4455 transitions. [2023-11-26 10:48:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:48:34,978 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 99.16666666666667) internal successors, (1190), 12 states have internal predecessors, (1190), 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 606 [2023-11-26 10:48:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:34,998 INFO L225 Difference]: With dead ends: 3131 [2023-11-26 10:48:34,998 INFO L226 Difference]: Without dead ends: 3102 [2023-11-26 10:48:35,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1210 GetRequests, 1200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:48:35,000 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 6308 mSDsluCounter, 4405 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6364 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:35,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6364 Valid, 4961 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:48:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2023-11-26 10:48:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3102. [2023-11-26 10:48:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 3029 states have (on average 1.4067348960052823) internal successors, (4261), 3039 states have internal predecessors, (4261), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:48:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 4401 transitions. [2023-11-26 10:48:35,107 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 4401 transitions. Word has length 606 [2023-11-26 10:48:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:35,109 INFO L495 AbstractCegarLoop]: Abstraction has 3102 states and 4401 transitions. [2023-11-26 10:48:35,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 99.16666666666667) internal successors, (1190), 12 states have internal predecessors, (1190), 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) [2023-11-26 10:48:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 4401 transitions. [2023-11-26 10:48:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1483 [2023-11-26 10:48:35,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:35,217 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2023-11-26 10:48:35,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:35,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:35,433 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:35,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1192377744, now seen corresponding path program 2 times [2023-11-26 10:48:35,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:35,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833583031] [2023-11-26 10:48:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:35,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:36,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:36,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142919540] [2023-11-26 10:48:36,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:36,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:36,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:36,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:36,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:48:39,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:48:39,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:39,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 6969 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:48:39,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6565 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 6069 trivial. 0 not checked. [2023-11-26 10:48:39,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:39,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:39,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833583031] [2023-11-26 10:48:39,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:39,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142919540] [2023-11-26 10:48:39,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142919540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:39,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:39,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:39,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55979176] [2023-11-26 10:48:39,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:39,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:39,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:39,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:39,599 INFO L87 Difference]: Start difference. First operand 3102 states and 4401 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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) [2023-11-26 10:48:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:39,752 INFO L93 Difference]: Finished difference Result 6074 states and 8610 transitions. [2023-11-26 10:48:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:39,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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 1482 [2023-11-26 10:48:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:39,776 INFO L225 Difference]: With dead ends: 6074 [2023-11-26 10:48:39,777 INFO L226 Difference]: Without dead ends: 3100 [2023-11-26 10:48:39,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1481 GetRequests, 1480 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:39,786 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 123 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:39,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 942 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2023-11-26 10:48:40,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 3100. [2023-11-26 10:48:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3027 states have (on average 1.4066732738685166) internal successors, (4258), 3037 states have internal predecessors, (4258), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-26 10:48:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4398 transitions. [2023-11-26 10:48:40,029 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4398 transitions. Word has length 1482 [2023-11-26 10:48:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:40,030 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4398 transitions. [2023-11-26 10:48:40,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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) [2023-11-26 10:48:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4398 transitions. [2023-11-26 10:48:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2023-11-26 10:48:40,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:40,070 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:40,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-26 10:48:40,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:48:40,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:40,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1791120637, now seen corresponding path program 1 times [2023-11-26 10:48:40,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:40,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398280381] [2023-11-26 10:48:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:40,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:41,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:41,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255658127] [2023-11-26 10:48:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:41,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:41,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:41,054 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:41,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_657119ce-3257-4a60-878d-7fe70d68cba3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process