./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.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_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/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_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/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_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/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 fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:06:33,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:06:33,575 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:06:33,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:06:33,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:06:33,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:06:33,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:06:33,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:06:33,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:06:33,630 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:06:33,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:06:33,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:06:33,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:06:33,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:06:33,634 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:06:33,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:06:33,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:06:33,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:06:33,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:06:33,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:06:33,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:06:33,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:06:33,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:06:33,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:06:33,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:06:33,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:06:33,640 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:06:33,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:06:33,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:06:33,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:06:33,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:06:33,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:33,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:06:33,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:06:33,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:06:33,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:06:33,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:06:33,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:06:33,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:06:33,645 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:06:33,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:06:33,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:06:33,646 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_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2023-11-26 12:06:33,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:06:33,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:06:33,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:06:33,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:06:34,000 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:06:34,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2023-11-26 12:06:37,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:06:37,423 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:06:37,429 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2023-11-26 12:06:37,449 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/data/92df85d7f/684edccd0d724c018248f952db9cf9f2/FLAG3f569f9f8 [2023-11-26 12:06:37,465 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/data/92df85d7f/684edccd0d724c018248f952db9cf9f2 [2023-11-26 12:06:37,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:06:37,469 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:06:37,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:37,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:06:37,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:06:37,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:37" (1/1) ... [2023-11-26 12:06:37,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b59f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:37, skipping insertion in model container [2023-11-26 12:06:37,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:37" (1/1) ... [2023-11-26 12:06:37,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:06:38,049 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_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i[33519,33532] [2023-11-26 12:06:38,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:38,213 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:06:38,262 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_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i[33519,33532] [2023-11-26 12:06:38,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:38,395 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:06:38,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38 WrapperNode [2023-11-26 12:06:38,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:38,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:38,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:06:38,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:06:38,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,546 INFO L138 Inliner]: procedures = 177, calls = 176, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 751 [2023-11-26 12:06:38,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:38,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:06:38,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:06:38,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:06:38,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,666 INFO L175 MemorySlicer]: Split 163 memory accesses to 3 slices as follows [2, 5, 156]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 43 writes are split as follows [0, 1, 42]. [2023-11-26 12:06:38,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:06:38,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:06:38,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:06:38,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:06:38,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (1/1) ... [2023-11-26 12:06:38,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:38,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:38,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:06:38,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:06:38,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:06:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:06:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:06:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:06:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:06:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:06:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 12:06:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 12:06:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 12:06:38,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 12:06:38,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 12:06:38,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 12:06:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:06:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:06:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:06:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:06:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:06:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:06:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:06:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:06:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:06:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:06:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:06:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:06:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:06:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:06:38,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:06:39,133 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:06:39,134 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:06:40,427 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:06:40,493 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:06:40,493 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-26 12:06:40,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:40 BoogieIcfgContainer [2023-11-26 12:06:40,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:06:40,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:06:40,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:06:40,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:06:40,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:06:37" (1/3) ... [2023-11-26 12:06:40,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbfe707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:40, skipping insertion in model container [2023-11-26 12:06:40,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:38" (2/3) ... [2023-11-26 12:06:40,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbfe707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:40, skipping insertion in model container [2023-11-26 12:06:40,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:40" (3/3) ... [2023-11-26 12:06:40,507 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-1.i [2023-11-26 12:06:40,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:06:40,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:06:40,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:06:40,609 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7866a7da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:06:40,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:06:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 178 states have (on average 1.696629213483146) internal successors, (302), 179 states have internal predecessors, (302), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:06:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 12:06:40,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:40,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:40,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:40,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash 870225765, now seen corresponding path program 1 times [2023-11-26 12:06:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:40,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314742326] [2023-11-26 12:06:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:40,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:40,902 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 12:06:40,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:40,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314742326] [2023-11-26 12:06:40,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314742326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:40,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:40,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836371995] [2023-11-26 12:06:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:40,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:40,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:40,959 INFO L87 Difference]: Start difference. First operand has 184 states, 178 states have (on average 1.696629213483146) internal successors, (302), 179 states have internal predecessors, (302), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:41,130 INFO L93 Difference]: Finished difference Result 539 states and 909 transitions. [2023-11-26 12:06:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:41,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 12:06:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:41,149 INFO L225 Difference]: With dead ends: 539 [2023-11-26 12:06:41,149 INFO L226 Difference]: Without dead ends: 354 [2023-11-26 12:06:41,153 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 12:06:41,157 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 252 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 529 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 12:06:41,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 529 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-26 12:06:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 183. [2023-11-26 12:06:41,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.4887640449438202) internal successors, (265), 178 states have internal predecessors, (265), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:06:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 271 transitions. [2023-11-26 12:06:41,221 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 271 transitions. Word has length 7 [2023-11-26 12:06:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:41,221 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 271 transitions. [2023-11-26 12:06:41,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 271 transitions. [2023-11-26 12:06:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 12:06:41,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:41,228 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] [2023-11-26 12:06:41,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:06:41,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:41,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:41,230 INFO L85 PathProgramCache]: Analyzing trace with hash 85236980, now seen corresponding path program 1 times [2023-11-26 12:06:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748958933] [2023-11-26 12:06:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:41,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:41,722 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 12:06:41,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:41,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748958933] [2023-11-26 12:06:41,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748958933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:41,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:41,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:06:41,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630515250] [2023-11-26 12:06:41,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:41,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:41,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:41,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:41,734 INFO L87 Difference]: Start difference. First operand 183 states and 271 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:41,863 INFO L93 Difference]: Finished difference Result 368 states and 544 transitions. [2023-11-26 12:06:41,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:41,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-26 12:06:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:41,871 INFO L225 Difference]: With dead ends: 368 [2023-11-26 12:06:41,871 INFO L226 Difference]: Without dead ends: 187 [2023-11-26 12:06:41,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:06:41,877 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 165 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 568 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 12:06:41,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 568 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:06:41,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-26 12:06:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2023-11-26 12:06:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.449438202247191) internal successors, (258), 178 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:06:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2023-11-26 12:06:41,909 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 82 [2023-11-26 12:06:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:41,910 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2023-11-26 12:06:41,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2023-11-26 12:06:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 12:06:41,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:41,922 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] [2023-11-26 12:06:41,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:06:41,923 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:41,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash 867183104, now seen corresponding path program 1 times [2023-11-26 12:06:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:41,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297689233] [2023-11-26 12:06:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,168 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 12:06:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297689233] [2023-11-26 12:06:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297689233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:42,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:42,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:42,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812630940] [2023-11-26 12:06:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:42,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:42,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:42,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:42,173 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:42,255 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2023-11-26 12:06:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:42,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-26 12:06:42,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:42,260 INFO L225 Difference]: With dead ends: 475 [2023-11-26 12:06:42,260 INFO L226 Difference]: Without dead ends: 294 [2023-11-26 12:06:42,261 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 12:06:42,263 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 123 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:42,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 503 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:06:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-26 12:06:42,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-26 12:06:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.480968858131488) internal successors, (428), 289 states have internal predecessors, (428), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 12:06:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 434 transitions. [2023-11-26 12:06:42,284 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 434 transitions. Word has length 82 [2023-11-26 12:06:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:42,284 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 434 transitions. [2023-11-26 12:06:42,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 434 transitions. [2023-11-26 12:06:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 12:06:42,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:42,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:42,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:06:42,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:42,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash -132507879, now seen corresponding path program 1 times [2023-11-26 12:06:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:42,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486945172] [2023-11-26 12:06:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:42,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:06:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 12:06:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:06:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486945172] [2023-11-26 12:06:42,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486945172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306275562] [2023-11-26 12:06:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:42,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:42,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:42,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:42,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:06:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:43,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:43,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:06:43,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:06:43,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306275562] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:43,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:43,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-26 12:06:43,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73076664] [2023-11-26 12:06:43,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:43,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:06:43,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:06:43,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:43,432 INFO L87 Difference]: Start difference. First operand 294 states and 434 transitions. Second operand has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:06:43,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:43,890 INFO L93 Difference]: Finished difference Result 705 states and 1040 transitions. [2023-11-26 12:06:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:06:43,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 95 [2023-11-26 12:06:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:43,898 INFO L225 Difference]: With dead ends: 705 [2023-11-26 12:06:43,898 INFO L226 Difference]: Without dead ends: 699 [2023-11-26 12:06:43,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:06:43,909 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1528 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:43,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1374 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:06:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-26 12:06:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2023-11-26 12:06:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 683 states have (on average 1.4538799414348462) internal successors, (993), 683 states have internal predecessors, (993), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 12:06:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1017 transitions. [2023-11-26 12:06:43,948 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1017 transitions. Word has length 95 [2023-11-26 12:06:43,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:43,949 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1017 transitions. [2023-11-26 12:06:43,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:06:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1017 transitions. [2023-11-26 12:06:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-26 12:06:43,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:43,982 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:43,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 12:06:44,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:44,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:44,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:44,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1950866516, now seen corresponding path program 1 times [2023-11-26 12:06:44,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:44,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736580555] [2023-11-26 12:06:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:44,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 12:06:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 12:06:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 4 proven. 327 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-26 12:06:45,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736580555] [2023-11-26 12:06:45,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736580555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:45,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274432185] [2023-11-26 12:06:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:45,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:45,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:45,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:45,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:06:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:46,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:06:46,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:06:46,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:06:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:06:47,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274432185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:06:47,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:06:47,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-26 12:06:47,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125509231] [2023-11-26 12:06:47,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:06:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 12:06:47,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:47,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 12:06:47,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:06:47,391 INFO L87 Difference]: Start difference. First operand 697 states and 1017 transitions. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:06:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:49,661 INFO L93 Difference]: Finished difference Result 2063 states and 3045 transitions. [2023-11-26 12:06:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 12:06:49,666 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 320 [2023-11-26 12:06:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:49,686 INFO L225 Difference]: With dead ends: 2063 [2023-11-26 12:06:49,688 INFO L226 Difference]: Without dead ends: 1651 [2023-11-26 12:06:49,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=677, Unknown=0, NotChecked=0, Total=992 [2023-11-26 12:06:49,691 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 9501 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9501 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:49,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9501 Valid, 3089 Invalid, 632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 12:06:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2023-11-26 12:06:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2023-11-26 12:06:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1635 states have (on average 1.4666666666666666) internal successors, (2398), 1635 states have internal predecessors, (2398), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 12:06:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2422 transitions. [2023-11-26 12:06:49,791 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2422 transitions. Word has length 320 [2023-11-26 12:06:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:49,793 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2422 transitions. [2023-11-26 12:06:49,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:06:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2422 transitions. [2023-11-26 12:06:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-26 12:06:49,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:49,819 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:49,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 12:06:50,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bb94fc9-c39d-4d54-af8d-0b6cb2eb131f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:50,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:50,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1248637578, now seen corresponding path program 1 times [2023-11-26 12:06:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:50,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847826045] [2023-11-26 12:06:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms