./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/gcas_3_safe.c-amalgamation.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_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/gcas_3_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya --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 be1094289d86e5319445b875586bee4583ea37d84a17f4abd9bf3ee1bc22a738 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:54:16,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:54:16,503 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:54:16,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:54:16,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:54:16,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:54:16,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:54:16,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:54:16,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:54:16,535 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:54:16,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:54:16,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:54:16,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:54:16,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:54:16,537 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:54:16,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:54:16,538 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:54:16,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:54:16,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:54:16,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:54:16,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:54:16,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:54:16,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:54:16,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:54:16,542 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:54:16,543 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:54:16,543 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:54:16,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:54:16,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:54:16,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:54:16,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:54:16,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:54:16,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:54:16,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:54:16,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:54:16,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:54:16,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:54:16,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:54:16,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:54:16,547 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:54:16,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:54:16,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:54:16,548 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_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be1094289d86e5319445b875586bee4583ea37d84a17f4abd9bf3ee1bc22a738 [2023-11-29 01:54:16,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:54:16,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:54:16,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:54:16,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:54:16,817 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:54:16,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/neural-networks/gcas_3_safe.c-amalgamation.i [2023-11-29 01:54:19,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:54:19,929 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:54:19,929 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/sv-benchmarks/c/neural-networks/gcas_3_safe.c-amalgamation.i [2023-11-29 01:54:19,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/data/823c47b60/9ead11d9ea874f4cab58cd199f92fb92/FLAG66d1738dd [2023-11-29 01:54:19,974 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/data/823c47b60/9ead11d9ea874f4cab58cd199f92fb92 [2023-11-29 01:54:19,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:54:19,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:54:19,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:54:19,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:54:19,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:54:19,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:54:19" (1/1) ... [2023-11-29 01:54:19,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbc5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:19, skipping insertion in model container [2023-11-29 01:54:19,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:54:19" (1/1) ... [2023-11-29 01:54:20,074 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:54:20,722 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_f324c732-b947-43fa-8ca6-c22204c5ddbd/sv-benchmarks/c/neural-networks/gcas_3_safe.c-amalgamation.i[65243,65256] [2023-11-29 01:54:20,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:54:20,936 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:54:20,987 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_f324c732-b947-43fa-8ca6-c22204c5ddbd/sv-benchmarks/c/neural-networks/gcas_3_safe.c-amalgamation.i[65243,65256] [2023-11-29 01:54:21,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:54:21,399 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:54:21,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21 WrapperNode [2023-11-29 01:54:21,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:54:21,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:54:21,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:54:21,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:54:21,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,581 INFO L138 Inliner]: procedures = 619, calls = 2157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 2547 [2023-11-29 01:54:21,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:54:21,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:54:21,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:54:21,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:54:21,607 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,675 INFO L175 MemorySlicer]: Split 2133 memory accesses to 12 slices as follows [2, 7, 449, 33, 43, 1025, 33, 3, 449, 15, 38, 36]. 48 percent of accesses are in the largest equivalence class. The 2071 initializations are split as follows [2, 7, 448, 32, 0, 1024, 32, 0, 448, 14, 32, 32]. The 19 writes are split as follows [0, 0, 0, 0, 14, 0, 0, 1, 0, 0, 2, 2]. [2023-11-29 01:54:21,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:54:21,771 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:54:21,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:54:21,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:54:21,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (1/1) ... [2023-11-29 01:54:21,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:54:21,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:21,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:54:21,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:54:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-29 01:54:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-29 01:54:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-29 01:54:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-29 01:54:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-29 01:54:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-29 01:54:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-29 01:54:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-29 01:54:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-29 01:54:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-29 01:54:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-29 01:54:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-29 01:54:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:54:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-29 01:54:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-29 01:54:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-29 01:54:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-29 01:54:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-29 01:54:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-29 01:54:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-29 01:54:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-29 01:54:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:54:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:54:21,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:54:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 01:54:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 01:54:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 01:54:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 01:54:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 01:54:22,027 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:54:22,030 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:54:24,466 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:54:24,648 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:54:24,648 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-29 01:54:24,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:54:24 BoogieIcfgContainer [2023-11-29 01:54:24,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:54:24,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:54:24,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:54:24,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:54:24,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:54:19" (1/3) ... [2023-11-29 01:54:24,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616e79e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:54:24, skipping insertion in model container [2023-11-29 01:54:24,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:21" (2/3) ... [2023-11-29 01:54:24,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616e79e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:54:24, skipping insertion in model container [2023-11-29 01:54:24,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:54:24" (3/3) ... [2023-11-29 01:54:24,657 INFO L112 eAbstractionObserver]: Analyzing ICFG gcas_3_safe.c-amalgamation.i [2023-11-29 01:54:24,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:54:24,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:54:24,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:54:24,733 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;@44186124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:54:24,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:54:24,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:54:24,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:24,745 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] [2023-11-29 01:54:24,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:24,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:24,750 INFO L85 PathProgramCache]: Analyzing trace with hash -781333683, now seen corresponding path program 1 times [2023-11-29 01:54:24,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:24,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336849271] [2023-11-29 01:54:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:24,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:25,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336849271] [2023-11-29 01:54:25,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336849271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:25,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:25,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:54:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647750541] [2023-11-29 01:54:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:25,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:54:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:54:25,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:54:25,396 INFO L87 Difference]: Start difference. First operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 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) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:25,663 INFO L93 Difference]: Finished difference Result 147 states and 251 transitions. [2023-11-29 01:54:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:54:25,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2023-11-29 01:54:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:25,674 INFO L225 Difference]: With dead ends: 147 [2023-11-29 01:54:25,674 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 01:54:25,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:54:25,680 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:25,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:54:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 01:54:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 01:54:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 72 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2023-11-29 01:54:25,719 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 56 [2023-11-29 01:54:25,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:25,720 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2023-11-29 01:54:25,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2023-11-29 01:54:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:54:25,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:25,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:25,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:54:25,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:25,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2129147117, now seen corresponding path program 1 times [2023-11-29 01:54:25,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:25,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344941730] [2023-11-29 01:54:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:25,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:26,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:26,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344941730] [2023-11-29 01:54:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344941730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:26,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:26,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:26,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673666650] [2023-11-29 01:54:26,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:26,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:26,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:26,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:26,204 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:26,629 INFO L93 Difference]: Finished difference Result 138 states and 189 transitions. [2023-11-29 01:54:26,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:26,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-29 01:54:26,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:26,631 INFO L225 Difference]: With dead ends: 138 [2023-11-29 01:54:26,631 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 01:54:26,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:26,633 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:26,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:54:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 01:54:26,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 01:54:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.375) internal successors, (99), 72 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2023-11-29 01:54:26,643 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 56 [2023-11-29 01:54:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:26,643 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2023-11-29 01:54:26,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2023-11-29 01:54:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:54:26,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:26,646 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] [2023-11-29 01:54:26,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:54:26,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:26,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:26,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2113628399, now seen corresponding path program 1 times [2023-11-29 01:54:26,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:26,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571485383] [2023-11-29 01:54:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:26,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:26,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571485383] [2023-11-29 01:54:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571485383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:26,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:26,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471912114] [2023-11-29 01:54:26,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:26,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:26,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:26,990 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:27,389 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2023-11-29 01:54:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:27,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-29 01:54:27,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:27,391 INFO L225 Difference]: With dead ends: 105 [2023-11-29 01:54:27,391 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 01:54:27,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:27,393 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:27,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:54:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 01:54:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 01:54:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2023-11-29 01:54:27,401 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 56 [2023-11-29 01:54:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:27,402 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2023-11-29 01:54:27,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2023-11-29 01:54:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:54:27,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:27,404 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] [2023-11-29 01:54:27,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:54:27,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:27,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1092560045, now seen corresponding path program 1 times [2023-11-29 01:54:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:27,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498681116] [2023-11-29 01:54:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:27,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:27,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:27,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498681116] [2023-11-29 01:54:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498681116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:27,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:27,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027868194] [2023-11-29 01:54:27,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:27,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:27,797 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:28,228 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2023-11-29 01:54:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-29 01:54:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:28,230 INFO L225 Difference]: With dead ends: 76 [2023-11-29 01:54:28,230 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 01:54:28,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:28,232 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:28,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:54:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 01:54:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 01:54:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2023-11-29 01:54:28,239 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 56 [2023-11-29 01:54:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:28,239 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-29 01:54:28,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2023-11-29 01:54:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:54:28,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:28,241 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] [2023-11-29 01:54:28,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:54:28,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:28,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1092561967, now seen corresponding path program 1 times [2023-11-29 01:54:28,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:28,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078681140] [2023-11-29 01:54:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:28,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:28,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078681140] [2023-11-29 01:54:28,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078681140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:28,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:54:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810014795] [2023-11-29 01:54:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:28,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:28,840 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:29,307 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2023-11-29 01:54:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:29,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-29 01:54:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:29,309 INFO L225 Difference]: With dead ends: 97 [2023-11-29 01:54:29,309 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 01:54:29,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:54:29,310 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:29,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:54:29,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 01:54:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-11-29 01:54:29,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2023-11-29 01:54:29,317 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 56 [2023-11-29 01:54:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:29,318 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2023-11-29 01:54:29,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2023-11-29 01:54:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 01:54:29,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:29,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:29,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:54:29,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:29,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 986750680, now seen corresponding path program 1 times [2023-11-29 01:54:29,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:29,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078956641] [2023-11-29 01:54:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:29,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:29,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:29,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078956641] [2023-11-29 01:54:29,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078956641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:29,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067519258] [2023-11-29 01:54:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:29,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:29,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:29,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:29,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:54:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:30,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:54:30,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:54:30,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:54:30,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067519258] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:30,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:54:30,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 01:54:30,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625227954] [2023-11-29 01:54:30,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:30,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:30,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:54:30,843 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:31,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:31,208 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2023-11-29 01:54:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:31,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2023-11-29 01:54:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:31,210 INFO L225 Difference]: With dead ends: 86 [2023-11-29 01:54:31,210 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 01:54:31,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:54:31,212 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:31,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:54:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 01:54:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-29 01:54:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.337837837837838) internal successors, (99), 74 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2023-11-29 01:54:31,218 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 59 [2023-11-29 01:54:31,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:31,219 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2023-11-29 01:54:31,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2023-11-29 01:54:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:54:31,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:31,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:31,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:54:31,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:54:31,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:31,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash -985336725, now seen corresponding path program 1 times [2023-11-29 01:54:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:31,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629865132] [2023-11-29 01:54:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:31,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:54:32,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:32,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629865132] [2023-11-29 01:54:32,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629865132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089273214] [2023-11-29 01:54:32,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:32,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:32,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:32,083 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:32,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:54:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:32,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:54:32,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:54:32,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:54:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089273214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:32,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:54:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 01:54:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341976226] [2023-11-29 01:54:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:32,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:32,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:54:32,946 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:33,421 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2023-11-29 01:54:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:33,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2023-11-29 01:54:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:33,422 INFO L225 Difference]: With dead ends: 107 [2023-11-29 01:54:33,422 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 01:54:33,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:54:33,423 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:33,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:54:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 01:54:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2023-11-29 01:54:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2023-11-29 01:54:33,429 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 62 [2023-11-29 01:54:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:33,429 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2023-11-29 01:54:33,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2023-11-29 01:54:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 01:54:33,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:33,431 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] [2023-11-29 01:54:33,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:54:33,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:33,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:33,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1664813890, now seen corresponding path program 1 times [2023-11-29 01:54:33,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:33,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172304187] [2023-11-29 01:54:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:33,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:54:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172304187] [2023-11-29 01:54:34,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172304187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:34,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720152195] [2023-11-29 01:54:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:34,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:34,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:34,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:34,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:54:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:35,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:54:35,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:54:35,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:54:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720152195] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:35,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:54:35,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 01:54:35,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9782148] [2023-11-29 01:54:35,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:35,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:35,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:35,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:35,078 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:35,508 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2023-11-29 01:54:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:35,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-11-29 01:54:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:35,510 INFO L225 Difference]: With dead ends: 93 [2023-11-29 01:54:35,510 INFO L226 Difference]: Without dead ends: 77 [2023-11-29 01:54:35,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:35,511 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:35,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:54:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-29 01:54:35,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-29 01:54:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 76 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2023-11-29 01:54:35,517 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 65 [2023-11-29 01:54:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:35,518 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2023-11-29 01:54:35,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2023-11-29 01:54:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 01:54:35,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:35,519 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] [2023-11-29 01:54:35,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:54:35,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:35,720 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:35,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1900472348, now seen corresponding path program 1 times [2023-11-29 01:54:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933337050] [2023-11-29 01:54:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:35,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:54:36,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:36,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933337050] [2023-11-29 01:54:36,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933337050] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:36,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422614180] [2023-11-29 01:54:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:36,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:36,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:36,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:36,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:54:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:37,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:54:37,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:54:37,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:54:37,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422614180] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:37,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:54:37,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 01:54:37,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882869344] [2023-11-29 01:54:37,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:37,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:54:37,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:37,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:54:37,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:37,117 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:37,572 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-11-29 01:54:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:54:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2023-11-29 01:54:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:37,574 INFO L225 Difference]: With dead ends: 83 [2023-11-29 01:54:37,574 INFO L226 Difference]: Without dead ends: 78 [2023-11-29 01:54:37,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:37,575 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:37,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:54:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-29 01:54:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-29 01:54:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 77 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2023-11-29 01:54:37,581 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 68 [2023-11-29 01:54:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:37,581 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2023-11-29 01:54:37,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2023-11-29 01:54:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 01:54:37,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:37,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:37,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:54:37,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:37,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:37,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1506015068, now seen corresponding path program 1 times [2023-11-29 01:54:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:37,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410664043] [2023-11-29 01:54:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:54:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410664043] [2023-11-29 01:54:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410664043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:38,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357351819] [2023-11-29 01:54:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:38,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:38,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:38,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:38,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:54:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:39,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:54:39,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:54:39,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:54:39,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357351819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:39,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:39,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-29 01:54:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836685827] [2023-11-29 01:54:39,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:39,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:39,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:39,097 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:40,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:40,078 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2023-11-29 01:54:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:54:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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 71 [2023-11-29 01:54:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:40,080 INFO L225 Difference]: With dead ends: 111 [2023-11-29 01:54:40,080 INFO L226 Difference]: Without dead ends: 87 [2023-11-29 01:54:40,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:54:40,081 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 11 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:40,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 463 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:54:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-29 01:54:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-29 01:54:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 86 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:40,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2023-11-29 01:54:40,086 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 71 [2023-11-29 01:54:40,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:40,086 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2023-11-29 01:54:40,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:40,086 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2023-11-29 01:54:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 01:54:40,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:40,087 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:40,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:54:40,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:54:40,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:40,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:40,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1738722315, now seen corresponding path program 2 times [2023-11-29 01:54:40,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:40,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985663108] [2023-11-29 01:54:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:40,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:54:41,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985663108] [2023-11-29 01:54:41,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985663108] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116974900] [2023-11-29 01:54:41,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:54:41,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:41,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:41,053 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:41,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:54:42,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:54:42,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:54:42,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:54:42,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:54:42,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 01:54:42,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116974900] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:42,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:42,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2023-11-29 01:54:42,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576289495] [2023-11-29 01:54:42,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:42,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:54:42,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:54:42,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:42,190 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:43,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:43,253 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2023-11-29 01:54:43,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:54:43,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 01:54:43,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:43,254 INFO L225 Difference]: With dead ends: 125 [2023-11-29 01:54:43,255 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 01:54:43,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:54:43,255 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 25 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:43,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 475 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:54:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 01:54:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-11-29 01:54:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 98 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2023-11-29 01:54:43,260 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 80 [2023-11-29 01:54:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:43,260 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2023-11-29 01:54:43,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:43,260 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2023-11-29 01:54:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 01:54:43,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:43,261 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:43,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:54:43,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:54:43,462 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:43,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:43,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1779525407, now seen corresponding path program 3 times [2023-11-29 01:54:43,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:43,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067174247] [2023-11-29 01:54:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:44,063 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 01:54:44,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:44,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067174247] [2023-11-29 01:54:44,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067174247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:44,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833663540] [2023-11-29 01:54:44,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:54:44,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:44,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:44,065 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:44,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:54:45,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:54:45,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:54:45,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:54:45,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-29 01:54:45,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-29 01:54:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833663540] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:45,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:54:45,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 5] total 12 [2023-11-29 01:54:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942778357] [2023-11-29 01:54:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:54:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:54:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:54:45,184 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:45,542 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2023-11-29 01:54:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:54:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 92 [2023-11-29 01:54:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:45,543 INFO L225 Difference]: With dead ends: 131 [2023-11-29 01:54:45,543 INFO L226 Difference]: Without dead ends: 100 [2023-11-29 01:54:45,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:54:45,544 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:45,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:54:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-29 01:54:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-29 01:54:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 99 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:45,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2023-11-29 01:54:45,548 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 92 [2023-11-29 01:54:45,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:45,548 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2023-11-29 01:54:45,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:45,549 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2023-11-29 01:54:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 01:54:45,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:45,549 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:45,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:54:45,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:54:45,750 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:45,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1876763282, now seen corresponding path program 1 times [2023-11-29 01:54:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:45,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314018494] [2023-11-29 01:54:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:45,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 01:54:46,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:46,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314018494] [2023-11-29 01:54:46,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314018494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:46,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075317395] [2023-11-29 01:54:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:46,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:46,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:46,485 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:46,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:54:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:47,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:54:47,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:54:47,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 01:54:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075317395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:47,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:47,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2023-11-29 01:54:47,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562086059] [2023-11-29 01:54:47,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:47,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:54:47,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:47,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:54:47,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:54:47,323 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:49,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:49,151 INFO L93 Difference]: Finished difference Result 157 states and 213 transitions. [2023-11-29 01:54:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:54:49,152 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 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 95 [2023-11-29 01:54:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:49,153 INFO L225 Difference]: With dead ends: 157 [2023-11-29 01:54:49,153 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 01:54:49,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:54:49,154 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 53 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:49,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 831 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:54:49,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 01:54:49,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2023-11-29 01:54:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.325) internal successors, (159), 120 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2023-11-29 01:54:49,160 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 95 [2023-11-29 01:54:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:49,161 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2023-11-29 01:54:49,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.111111111111111) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2023-11-29 01:54:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:54:49,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:49,162 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:49,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:54:49,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:54:49,363 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:49,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash -850297529, now seen corresponding path program 2 times [2023-11-29 01:54:49,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:49,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342708222] [2023-11-29 01:54:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:49,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-29 01:54:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:50,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342708222] [2023-11-29 01:54:50,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342708222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:50,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574660411] [2023-11-29 01:54:50,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:54:50,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:50,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:50,110 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:50,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:54:51,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:54:51,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:54:51,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:54:51,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-29 01:54:51,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:54:51,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574660411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:51,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:54:51,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 01:54:51,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594330218] [2023-11-29 01:54:51,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:51,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:54:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:54:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:51,106 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:51,451 INFO L93 Difference]: Finished difference Result 201 states and 267 transitions. [2023-11-29 01:54:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:54:51,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 116 [2023-11-29 01:54:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:51,453 INFO L225 Difference]: With dead ends: 201 [2023-11-29 01:54:51,453 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 01:54:51,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:51,454 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:51,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 154 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:54:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 01:54:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2023-11-29 01:54:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.322314049586777) internal successors, (160), 121 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 160 transitions. [2023-11-29 01:54:51,459 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 160 transitions. Word has length 116 [2023-11-29 01:54:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:51,459 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 160 transitions. [2023-11-29 01:54:51,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 160 transitions. [2023-11-29 01:54:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:54:51,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:51,460 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:51,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:54:51,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:51,661 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:51,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1297211509, now seen corresponding path program 1 times [2023-11-29 01:54:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:51,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36917267] [2023-11-29 01:54:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:51,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-29 01:54:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36917267] [2023-11-29 01:54:52,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36917267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810792020] [2023-11-29 01:54:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:52,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:52,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:52,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:54:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:53,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 01:54:53,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-29 01:54:53,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 01:54:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810792020] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:53,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:53,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2023-11-29 01:54:53,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313167937] [2023-11-29 01:54:53,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:53,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:54:53,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:54:53,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:54:53,658 INFO L87 Difference]: Start difference. First operand 122 states and 160 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:56,717 INFO L93 Difference]: Finished difference Result 198 states and 268 transitions. [2023-11-29 01:54:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:54:56,718 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 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 119 [2023-11-29 01:54:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:56,718 INFO L225 Difference]: With dead ends: 198 [2023-11-29 01:54:56,719 INFO L226 Difference]: Without dead ends: 146 [2023-11-29 01:54:56,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:54:56,720 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 66 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:56,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1232 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 01:54:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-29 01:54:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-29 01:54:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.3241379310344827) internal successors, (192), 145 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 192 transitions. [2023-11-29 01:54:56,729 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 192 transitions. Word has length 119 [2023-11-29 01:54:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:56,729 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 192 transitions. [2023-11-29 01:54:56,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 192 transitions. [2023-11-29 01:54:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 01:54:56,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:56,730 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:56,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:54:56,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:56,931 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:56,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash 525373685, now seen corresponding path program 2 times [2023-11-29 01:54:56,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:56,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016233768] [2023-11-29 01:54:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:56,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-29 01:54:58,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:58,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016233768] [2023-11-29 01:54:58,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016233768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:58,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689059779] [2023-11-29 01:54:58,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:54:58,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:58,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:58,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:58,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:54:59,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:54:59,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:54:59,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 01:54:59,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 01:54:59,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-29 01:54:59,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689059779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:59,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:59,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2023-11-29 01:54:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046236331] [2023-11-29 01:54:59,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:59,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 01:54:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 01:54:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:54:59,795 INFO L87 Difference]: Start difference. First operand 146 states and 192 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:09,968 INFO L93 Difference]: Finished difference Result 239 states and 328 transitions. [2023-11-29 01:55:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 01:55:09,969 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 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 143 [2023-11-29 01:55:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:09,970 INFO L225 Difference]: With dead ends: 239 [2023-11-29 01:55:09,970 INFO L226 Difference]: Without dead ends: 187 [2023-11-29 01:55:09,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 01:55:09,972 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 184 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:09,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2541 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 01:55:09,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-29 01:55:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2023-11-29 01:55:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.326086956521739) internal successors, (244), 184 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 244 transitions. [2023-11-29 01:55:09,980 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 244 transitions. Word has length 143 [2023-11-29 01:55:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:09,981 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 244 transitions. [2023-11-29 01:55:09,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 244 transitions. [2023-11-29 01:55:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-29 01:55:09,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:09,982 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:09,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:55:10,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:55:10,183 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:10,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash -127087936, now seen corresponding path program 3 times [2023-11-29 01:55:10,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:10,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585723865] [2023-11-29 01:55:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:10,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-29 01:55:11,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585723865] [2023-11-29 01:55:11,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585723865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523346144] [2023-11-29 01:55:11,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:55:11,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:11,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:11,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:11,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:55:12,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:55:12,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:55:12,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:55:12,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1048 trivial. 0 not checked. [2023-11-29 01:55:12,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2023-11-29 01:55:12,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523346144] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:12,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:55:12,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18, 6] total 24 [2023-11-29 01:55:12,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015598880] [2023-11-29 01:55:12,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:12,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:55:12,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:12,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:55:12,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:55:12,725 INFO L87 Difference]: Start difference. First operand 185 states and 244 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:13,056 INFO L93 Difference]: Finished difference Result 196 states and 258 transitions. [2023-11-29 01:55:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:55:13,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 182 [2023-11-29 01:55:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:13,058 INFO L225 Difference]: With dead ends: 196 [2023-11-29 01:55:13,058 INFO L226 Difference]: Without dead ends: 186 [2023-11-29 01:55:13,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:55:13,059 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:13,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:55:13,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-29 01:55:13,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-29 01:55:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.3243243243243243) internal successors, (245), 185 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 245 transitions. [2023-11-29 01:55:13,069 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 245 transitions. Word has length 182 [2023-11-29 01:55:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:13,069 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 245 transitions. [2023-11-29 01:55:13,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 245 transitions. [2023-11-29 01:55:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-29 01:55:13,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:13,071 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:13,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:55:13,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:55:13,271 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:13,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1571580125, now seen corresponding path program 1 times [2023-11-29 01:55:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:13,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742538241] [2023-11-29 01:55:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:13,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2023-11-29 01:55:14,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:14,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742538241] [2023-11-29 01:55:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742538241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724517800] [2023-11-29 01:55:14,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:14,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:14,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:14,544 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:14,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:55:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:15,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 3313 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 01:55:15,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2023-11-29 01:55:15,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 322 proven. 660 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-29 01:55:16,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724517800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:55:16,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:55:16,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2023-11-29 01:55:16,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287187031] [2023-11-29 01:55:16,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:55:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 01:55:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 01:55:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 01:55:16,906 INFO L87 Difference]: Start difference. First operand 186 states and 245 transitions. Second operand has 51 states, 51 states have (on average 4.2745098039215685) internal successors, (218), 51 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:50,192 INFO L93 Difference]: Finished difference Result 326 states and 447 transitions. [2023-11-29 01:55:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 01:55:50,192 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.2745098039215685) internal successors, (218), 51 states have internal predecessors, (218), 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 185 [2023-11-29 01:55:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:50,194 INFO L225 Difference]: With dead ends: 326 [2023-11-29 01:55:50,194 INFO L226 Difference]: Without dead ends: 237 [2023-11-29 01:55:50,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 01:55:50,197 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 325 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:50,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 3081 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 01:55:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-29 01:55:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-11-29 01:55:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.326271186440678) internal successors, (313), 236 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 313 transitions. [2023-11-29 01:55:50,205 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 313 transitions. Word has length 185 [2023-11-29 01:55:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:50,205 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 313 transitions. [2023-11-29 01:55:50,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.2745098039215685) internal successors, (218), 51 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 313 transitions. [2023-11-29 01:55:50,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 01:55:50,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:50,206 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:50,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:55:50,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:55:50,407 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:50,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:50,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2063409390, now seen corresponding path program 2 times [2023-11-29 01:55:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:50,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110052588] [2023-11-29 01:55:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:50,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1526 trivial. 0 not checked. [2023-11-29 01:55:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:52,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110052588] [2023-11-29 01:55:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110052588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897594505] [2023-11-29 01:55:52,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:55:52,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:52,325 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:52,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:55:53,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:55:53,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:55:53,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 3551 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:55:53,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2237 trivial. 0 not checked. [2023-11-29 01:55:53,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2239 trivial. 0 not checked. [2023-11-29 01:55:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897594505] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:53,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:55:53,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25, 6] total 31 [2023-11-29 01:55:53,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260276860] [2023-11-29 01:55:53,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:53,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:55:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:55:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:55:53,838 INFO L87 Difference]: Start difference. First operand 237 states and 313 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:54,430 INFO L93 Difference]: Finished difference Result 325 states and 430 transitions. [2023-11-29 01:55:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:55:54,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2023-11-29 01:55:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:54,432 INFO L225 Difference]: With dead ends: 325 [2023-11-29 01:55:54,432 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 01:55:54,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:55:54,433 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:54,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 232 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:55:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 01:55:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-29 01:55:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.3248945147679325) internal successors, (314), 237 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 314 transitions. [2023-11-29 01:55:54,442 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 314 transitions. Word has length 236 [2023-11-29 01:55:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:54,443 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 314 transitions. [2023-11-29 01:55:54,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 314 transitions. [2023-11-29 01:55:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-29 01:55:54,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:54,444 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:54,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:55:54,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:54,645 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:54,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:54,645 INFO L85 PathProgramCache]: Analyzing trace with hash -713360811, now seen corresponding path program 1 times [2023-11-29 01:55:54,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:54,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66215684] [2023-11-29 01:55:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:54,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2242 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2023-11-29 01:55:56,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:56,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66215684] [2023-11-29 01:55:56,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66215684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:56,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549250288] [2023-11-29 01:55:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:56,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:56,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:56,612 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:56,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:55:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:57,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 3556 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 01:55:57,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2242 backedges. 0 proven. 2100 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-29 01:55:58,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2242 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2023-11-29 01:55:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549250288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:55:59,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:55:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 48, 25] total 72 [2023-11-29 01:55:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453447398] [2023-11-29 01:55:59,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:55:59,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-29 01:55:59,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:59,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-29 01:55:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=4500, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 01:55:59,750 INFO L87 Difference]: Start difference. First operand 238 states and 314 transitions. Second operand has 72 states, 72 states have (on average 3.9166666666666665) internal successors, (282), 72 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:13,390 INFO L93 Difference]: Finished difference Result 281 states and 379 transitions. [2023-11-29 01:56:13,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 01:56:13,391 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.9166666666666665) internal successors, (282), 72 states have internal predecessors, (282), 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 237 [2023-11-29 01:56:13,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:13,392 INFO L225 Difference]: With dead ends: 281 [2023-11-29 01:56:13,392 INFO L226 Difference]: Without dead ends: 268 [2023-11-29 01:56:13,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=892, Invalid=5428, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 01:56:13,394 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 267 mSDsluCounter, 5364 mSDsCounter, 0 mSdLazyCounter, 6903 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 5484 SdHoareTripleChecker+Invalid, 6904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:13,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 5484 Invalid, 6904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6903 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-29 01:56:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-29 01:56:13,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-11-29 01:56:13,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.3258426966292134) internal successors, (354), 267 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 354 transitions. [2023-11-29 01:56:13,409 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 354 transitions. Word has length 237 [2023-11-29 01:56:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:13,410 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 354 transitions. [2023-11-29 01:56:13,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.9166666666666665) internal successors, (282), 72 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 354 transitions. [2023-11-29 01:56:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-11-29 01:56:13,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:13,412 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:13,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:56:13,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:56:13,613 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:13,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash 912881781, now seen corresponding path program 2 times [2023-11-29 01:56:13,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:13,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387396163] [2023-11-29 01:56:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:13,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-11-29 01:56:14,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387396163] [2023-11-29 01:56:14,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387396163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:14,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:14,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075174656] [2023-11-29 01:56:14,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:14,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:14,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:14,903 INFO L87 Difference]: Start difference. First operand 268 states and 354 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:15,296 INFO L93 Difference]: Finished difference Result 493 states and 654 transitions. [2023-11-29 01:56:15,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:15,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 267 [2023-11-29 01:56:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:15,298 INFO L225 Difference]: With dead ends: 493 [2023-11-29 01:56:15,298 INFO L226 Difference]: Without dead ends: 269 [2023-11-29 01:56:15,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:15,299 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:15,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:56:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-29 01:56:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-11-29 01:56:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3246268656716418) internal successors, (355), 268 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 355 transitions. [2023-11-29 01:56:15,310 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 355 transitions. Word has length 267 [2023-11-29 01:56:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:15,310 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 355 transitions. [2023-11-29 01:56:15,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 355 transitions. [2023-11-29 01:56:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-29 01:56:15,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:15,311 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:15,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:56:15,312 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:15,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:15,312 INFO L85 PathProgramCache]: Analyzing trace with hash 849617399, now seen corresponding path program 1 times [2023-11-29 01:56:15,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:15,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209897148] [2023-11-29 01:56:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-11-29 01:56:16,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:16,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209897148] [2023-11-29 01:56:16,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209897148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:56:16,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931771843] [2023-11-29 01:56:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:16,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:56:16,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:56:16,435 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:56:16,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:56:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:17,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 3741 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:56:17,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:56:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3044 trivial. 0 not checked. [2023-11-29 01:56:17,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:56:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2023-11-29 01:56:17,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931771843] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:56:17,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:56:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 11 [2023-11-29 01:56:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996437627] [2023-11-29 01:56:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:56:17,655 INFO L87 Difference]: Start difference. First operand 269 states and 355 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) [2023-11-29 01:56:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:17,994 INFO L93 Difference]: Finished difference Result 281 states and 370 transitions. [2023-11-29 01:56:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:17,995 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 268 [2023-11-29 01:56:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:17,997 INFO L225 Difference]: With dead ends: 281 [2023-11-29 01:56:17,997 INFO L226 Difference]: Without dead ends: 270 [2023-11-29 01:56:17,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:56:17,998 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:17,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:56:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-29 01:56:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-11-29 01:56:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.3234200743494424) internal successors, (356), 269 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:56:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 356 transitions. [2023-11-29 01:56:18,008 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 356 transitions. Word has length 268 [2023-11-29 01:56:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:18,009 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 356 transitions. [2023-11-29 01:56:18,009 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) [2023-11-29 01:56:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 356 transitions. [2023-11-29 01:56:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-11-29 01:56:18,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:18,011 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:18,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 01:56:18,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:56:18,212 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:18,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash -350447209, now seen corresponding path program 1 times [2023-11-29 01:56:18,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:18,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497187193] [2023-11-29 01:56:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:18,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2023-11-29 01:56:19,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497187193] [2023-11-29 01:56:19,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497187193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:56:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445273497] [2023-11-29 01:56:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:19,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:56:19,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:56:19,570 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:56:19,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:56:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:20,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 3746 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-29 01:56:20,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:56:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3047 trivial. 0 not checked. [2023-11-29 01:56:20,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:56:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 1 proven. 1521 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2023-11-29 01:56:22,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445273497] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:56:22,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:56:22,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 39] total 45 [2023-11-29 01:56:22,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074266092] [2023-11-29 01:56:22,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:56:22,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 01:56:22,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 01:56:22,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1882, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 01:56:22,494 INFO L87 Difference]: Start difference. First operand 270 states and 356 transitions. Second operand has 45 states, 45 states have (on average 4.333333333333333) internal successors, (195), 45 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:02:16,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:02:16,306 INFO L93 Difference]: Finished difference Result 512 states and 682 transitions. [2023-11-29 02:02:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 02:02:16,306 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.333333333333333) internal successors, (195), 45 states have internal predecessors, (195), 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 269 [2023-11-29 02:02:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:02:16,308 INFO L225 Difference]: With dead ends: 512 [2023-11-29 02:02:16,308 INFO L226 Difference]: Without dead ends: 286 [2023-11-29 02:02:16,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 348.5s TimeCoverageRelationStatistics Valid=1315, Invalid=6693, Unknown=2, NotChecked=0, Total=8010 [2023-11-29 02:02:16,311 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 653 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:02:16,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 3098 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 02:02:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-29 02:02:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2023-11-29 02:02:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.3157894736842106) internal successors, (375), 285 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:02:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 375 transitions. [2023-11-29 02:02:16,323 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 375 transitions. Word has length 269 [2023-11-29 02:02:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:02:16,323 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 375 transitions. [2023-11-29 02:02:16,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.333333333333333) internal successors, (195), 45 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:02:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 375 transitions. [2023-11-29 02:02:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-29 02:02:16,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:02:16,325 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 8, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:02:16,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:02:16,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:02:16,525 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:02:16,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:02:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash -136961081, now seen corresponding path program 2 times [2023-11-29 02:02:16,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:02:16,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96177081] [2023-11-29 02:02:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:02:16,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:02:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3129 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 3094 trivial. 0 not checked. [2023-11-29 02:02:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:02:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96177081] [2023-11-29 02:02:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96177081] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:02:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245100442] [2023-11-29 02:02:17,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:02:17,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:02:17,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:02:17,879 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:02:17,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:02:19,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:02:19,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:02:19,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 3823 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-29 02:02:19,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:02:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3129 backedges. 1 proven. 70 refuted. 0 times theorem prover too weak. 3058 trivial. 0 not checked. [2023-11-29 02:02:19,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:02:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3129 backedges. 1 proven. 1590 refuted. 0 times theorem prover too weak. 1538 trivial. 0 not checked. [2023-11-29 02:02:21,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245100442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:02:21,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:02:21,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 42] total 52 [2023-11-29 02:02:21,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954738415] [2023-11-29 02:02:21,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:02:21,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 02:02:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:02:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 02:02:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2511, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 02:02:21,489 INFO L87 Difference]: Start difference. First operand 286 states and 375 transitions. Second operand has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:08:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:43,465 INFO L93 Difference]: Finished difference Result 568 states and 756 transitions. [2023-11-29 02:08:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-29 02:08:43,466 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 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 285 [2023-11-29 02:08:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:43,467 INFO L225 Difference]: With dead ends: 568 [2023-11-29 02:08:43,467 INFO L226 Difference]: Without dead ends: 326 [2023-11-29 02:08:43,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3219 ImplicationChecksByTransitivity, 376.2s TimeCoverageRelationStatistics Valid=2101, Invalid=13399, Unknown=0, NotChecked=0, Total=15500 [2023-11-29 02:08:43,472 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 789 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:43,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 3249 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-29 02:08:43,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-29 02:08:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2023-11-29 02:08:43,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.2953846153846154) internal successors, (421), 325 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:08:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 421 transitions. [2023-11-29 02:08:43,490 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 421 transitions. Word has length 285 [2023-11-29 02:08:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:43,490 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 421 transitions. [2023-11-29 02:08:43,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:08:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 421 transitions. [2023-11-29 02:08:43,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-29 02:08:43,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:43,492 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 30, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:43,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:08:43,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 02:08:43,692 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:43,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:43,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1783000807, now seen corresponding path program 3 times [2023-11-29 02:08:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:43,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399676332] [2023-11-29 02:08:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:43,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3927 backedges. 155 proven. 6 refuted. 0 times theorem prover too weak. 3766 trivial. 0 not checked. [2023-11-29 02:08:45,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:45,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399676332] [2023-11-29 02:08:45,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399676332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:45,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376338564] [2023-11-29 02:08:45,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:08:45,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:45,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:45,251 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:45,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:08:47,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 02:08:47,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:47,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 02:08:47,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3927 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 3893 trivial. 0 not checked. [2023-11-29 02:08:47,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3927 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3925 trivial. 0 not checked. [2023-11-29 02:08:47,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376338564] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:08:47,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:08:47,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2023-11-29 02:08:47,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285008945] [2023-11-29 02:08:47,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:08:47,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:08:47,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:08:47,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:08:47,997 INFO L87 Difference]: Start difference. First operand 326 states and 421 transitions. Second operand has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:08:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:49,656 INFO L93 Difference]: Finished difference Result 630 states and 824 transitions. [2023-11-29 02:08:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:08:49,656 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 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 325 [2023-11-29 02:08:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:49,658 INFO L225 Difference]: With dead ends: 630 [2023-11-29 02:08:49,658 INFO L226 Difference]: Without dead ends: 348 [2023-11-29 02:08:49,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:08:49,659 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 57 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:49,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 651 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:08:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-29 02:08:49,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2023-11-29 02:08:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.2853025936599423) internal successors, (446), 347 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:08:49,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 446 transitions. [2023-11-29 02:08:49,697 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 446 transitions. Word has length 325 [2023-11-29 02:08:49,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:08:49,697 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 446 transitions. [2023-11-29 02:08:49,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:08:49,697 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 446 transitions. [2023-11-29 02:08:49,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-11-29 02:08:49,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:08:49,699 INFO L195 NwaCegarLoop]: trace histogram [40, 32, 32, 32, 32, 32, 32, 10, 10, 10, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:08:49,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 02:08:49,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 02:08:49,899 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:08:49,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:08:49,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1906873992, now seen corresponding path program 4 times [2023-11-29 02:08:49,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:08:49,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325800582] [2023-11-29 02:08:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:08:49,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:08:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:08:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4414 backedges. 236 proven. 10 refuted. 0 times theorem prover too weak. 4168 trivial. 0 not checked. [2023-11-29 02:08:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:08:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325800582] [2023-11-29 02:08:51,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325800582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:08:51,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272117851] [2023-11-29 02:08:51,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:08:51,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:08:51,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:08:51,495 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:08:51,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f324c732-b947-43fa-8ca6-c22204c5ddbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:08:52,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:08:52,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:08:52,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 4124 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 02:08:52,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:08:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4414 backedges. 2 proven. 832 refuted. 0 times theorem prover too weak. 3580 trivial. 0 not checked. [2023-11-29 02:08:53,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:08:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4414 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-11-29 02:08:53,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272117851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:08:53,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:08:53,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 30 [2023-11-29 02:08:53,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977339409] [2023-11-29 02:08:53,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:08:53,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 02:08:53,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:08:53,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 02:08:53,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2023-11-29 02:08:53,441 INFO L87 Difference]: Start difference. First operand 348 states and 446 transitions. Second operand has 30 states, 30 states have (on average 5.1) internal successors, (153), 30 states have internal predecessors, (153), 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)