./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/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_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/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_ec5afe0f-d439-43b4-b784-151d38df8bc9/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 8a7354f4fd6865dd535373d18faa5c6e5c139e69159223a75476e722fa8db1a5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:46:50,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:46:50,121 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:46:50,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:46:50,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:46:50,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:46:50,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:46:50,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:46:50,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:46:50,165 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:46:50,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:46:50,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:46:50,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:46:50,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:46:50,168 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:46:50,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:46:50,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:46:50,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:46:50,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:46:50,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:46:50,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:46:50,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:46:50,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:46:50,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:46:50,174 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:46:50,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:46:50,176 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:46:50,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:46:50,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:46:50,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:46:50,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:46:50,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:46:50,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:46:50,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:46:50,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:46:50,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:46:50,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:46:50,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:46:50,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:46:50,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:46:50,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:46:50,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:46:50,182 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_ec5afe0f-d439-43b4-b784-151d38df8bc9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7354f4fd6865dd535373d18faa5c6e5c139e69159223a75476e722fa8db1a5 [2023-11-29 03:46:50,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:46:50,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:46:50,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:46:50,527 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:46:50,528 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:46:50,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i [2023-11-29 03:46:54,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:46:54,450 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:46:54,451 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i [2023-11-29 03:46:54,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/data/9042ecf70/ec4cf22f62e3433f9eb789393a354c76/FLAG304a08da4 [2023-11-29 03:46:54,503 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/data/9042ecf70/ec4cf22f62e3433f9eb789393a354c76 [2023-11-29 03:46:54,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:46:54,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:46:54,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:46:54,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:46:54,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:46:54,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:46:54" (1/1) ... [2023-11-29 03:46:54,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f6b4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:54, skipping insertion in model container [2023-11-29 03:46:54,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:46:54" (1/1) ... [2023-11-29 03:46:54,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:46:55,559 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_ec5afe0f-d439-43b4-b784-151d38df8bc9/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i[65243,65256] [2023-11-29 03:46:55,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:46:55,838 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:46:55,903 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_ec5afe0f-d439-43b4-b784-151d38df8bc9/sv-benchmarks/c/neural-networks/gcas_8_safe.c-amalgamation.i[65243,65256] [2023-11-29 03:46:56,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:46:56,370 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:46:56,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56 WrapperNode [2023-11-29 03:46:56,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:46:56,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:46:56,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:46:56,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:46:56,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,613 INFO L138 Inliner]: procedures = 619, calls = 2157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 2547 [2023-11-29 03:46:56,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:46:56,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:46:56,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:46:56,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:46:56,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,656 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,712 INFO L175 MemorySlicer]: Split 2133 memory accesses to 12 slices as follows [2, 7, 449, 33, 1025, 33, 449, 15, 38, 36, 3, 43]. 48 percent of accesses are in the largest equivalence class. The 2071 initializations are split as follows [2, 7, 448, 32, 1024, 32, 448, 14, 32, 32, 0, 0]. The 19 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 1, 14]. [2023-11-29 03:46:56,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:46:56,829 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:46:56,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:46:56,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:46:56,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (1/1) ... [2023-11-29 03:46:56,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:46:56,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:56,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:46:56,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:46:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-29 03:46:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-29 03:46:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-29 03:46:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-29 03:46:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-29 03:46:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-29 03:46:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-29 03:46:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-29 03:46:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-29 03:46:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-11-29 03:46:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-11-29 03:46:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-11-29 03:46:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:46:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-11-29 03:46:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-11-29 03:46:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-11-29 03:46:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-11-29 03:46:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-11-29 03:46:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-11-29 03:46:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-11-29 03:46:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-11-29 03:46:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-11-29 03:46:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-11-29 03:46:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-11-29 03:46:56,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-11-29 03:46:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-29 03:46:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-29 03:46:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-29 03:46:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-29 03:46:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-29 03:46:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-11-29 03:46:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-11-29 03:46:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-11-29 03:46:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-11-29 03:46:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-11-29 03:46:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-11-29 03:46:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-11-29 03:46:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:46:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:46:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:46:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:46:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:46:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:46:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:46:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:46:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:46:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:46:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 03:46:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 03:46:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 03:46:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 03:46:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 03:46:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 03:46:57,169 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:46:57,172 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:47:00,160 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:47:00,336 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:47:00,337 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-29 03:47:00,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:47:00 BoogieIcfgContainer [2023-11-29 03:47:00,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:47:00,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:47:00,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:47:00,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:47:00,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:46:54" (1/3) ... [2023-11-29 03:47:00,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5118c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:47:00, skipping insertion in model container [2023-11-29 03:47:00,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:46:56" (2/3) ... [2023-11-29 03:47:00,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5118c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:47:00, skipping insertion in model container [2023-11-29 03:47:00,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:47:00" (3/3) ... [2023-11-29 03:47:00,346 INFO L112 eAbstractionObserver]: Analyzing ICFG gcas_8_safe.c-amalgamation.i [2023-11-29 03:47:00,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:47:00,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:47:00,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:47:00,425 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;@56eb6eaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:47:00,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:47:00,430 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 03:47:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:47:00,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:00,440 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 03:47:00,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:00,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:00,446 INFO L85 PathProgramCache]: Analyzing trace with hash -781333683, now seen corresponding path program 1 times [2023-11-29 03:47:00,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:00,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727583630] [2023-11-29 03:47:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:01,293 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 03:47:01,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727583630] [2023-11-29 03:47:01,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727583630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:01,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:01,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:47:01,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298875419] [2023-11-29 03:47:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:01,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:47:01,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:47:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:47:01,338 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 03:47:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:01,698 INFO L93 Difference]: Finished difference Result 147 states and 251 transitions. [2023-11-29 03:47:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:47:01,701 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 03:47:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:01,710 INFO L225 Difference]: With dead ends: 147 [2023-11-29 03:47:01,710 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 03:47:01,713 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 03:47:01,717 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:01,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:47:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 03:47:01,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 03:47:01,755 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 03:47:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2023-11-29 03:47:01,759 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 56 [2023-11-29 03:47:01,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:01,760 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2023-11-29 03:47:01,760 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 03:47:01,760 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2023-11-29 03:47:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:47:01,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:01,763 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 03:47:01,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:47:01,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:01,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:01,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2129147117, now seen corresponding path program 1 times [2023-11-29 03:47:01,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088382574] [2023-11-29 03:47:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:01,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:02,238 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 03:47:02,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088382574] [2023-11-29 03:47:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088382574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:02,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:47:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923137915] [2023-11-29 03:47:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:02,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:47:02,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:02,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:47:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:47:02,243 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 03:47:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:02,923 INFO L93 Difference]: Finished difference Result 138 states and 189 transitions. [2023-11-29 03:47:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:47:02,924 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 03:47:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:02,926 INFO L225 Difference]: With dead ends: 138 [2023-11-29 03:47:02,926 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 03:47:02,927 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 03:47:02,929 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:02,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:47:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 03:47:02,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 03:47:02,939 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 03:47:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2023-11-29 03:47:02,941 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 56 [2023-11-29 03:47:02,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:02,942 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2023-11-29 03:47:02,942 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 03:47:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2023-11-29 03:47:02,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:47:02,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:02,945 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 03:47:02,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:47:02,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:02,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:02,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2113628399, now seen corresponding path program 1 times [2023-11-29 03:47:02,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:02,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66216244] [2023-11-29 03:47:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:02,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:03,377 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 03:47:03,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:03,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66216244] [2023-11-29 03:47:03,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66216244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:03,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:03,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:47:03,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067001304] [2023-11-29 03:47:03,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:03,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:47:03,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:47:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:47:03,382 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 03:47:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:03,965 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2023-11-29 03:47:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:47:03,967 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 03:47:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:03,968 INFO L225 Difference]: With dead ends: 105 [2023-11-29 03:47:03,971 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 03:47:03,971 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 03:47:03,975 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:03,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:47:03,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 03:47:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 03:47:03,988 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 03:47:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2023-11-29 03:47:03,992 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 56 [2023-11-29 03:47:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:03,993 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2023-11-29 03:47:03,993 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 03:47:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2023-11-29 03:47:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:47:03,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:03,998 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 03:47:03,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:47:03,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:03,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1092560045, now seen corresponding path program 1 times [2023-11-29 03:47:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:04,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720857195] [2023-11-29 03:47:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:04,364 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 03:47:04,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720857195] [2023-11-29 03:47:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720857195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:04,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:04,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:47:04,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788690074] [2023-11-29 03:47:04,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:47:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:47:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:47:04,368 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 03:47:04,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:04,815 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2023-11-29 03:47:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:47:04,816 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 03:47:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:04,817 INFO L225 Difference]: With dead ends: 76 [2023-11-29 03:47:04,817 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 03:47:04,818 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 03:47:04,819 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 03:47:04,819 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 03:47:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 03:47:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 03:47:04,823 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 03:47:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2023-11-29 03:47:04,824 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 56 [2023-11-29 03:47:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:04,824 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-29 03:47:04,825 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 03:47:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2023-11-29 03:47:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 03:47:04,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:04,826 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 03:47:04,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:47:04,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:04,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1092561967, now seen corresponding path program 1 times [2023-11-29 03:47:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:04,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328587325] [2023-11-29 03:47:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:04,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:05,452 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 03:47:05,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328587325] [2023-11-29 03:47:05,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328587325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:05,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:47:05,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:47:05,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129227065] [2023-11-29 03:47:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:05,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:47:05,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:05,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:47:05,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:47:05,455 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 03:47:05,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:05,904 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2023-11-29 03:47:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:47:05,905 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 03:47:05,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:05,906 INFO L225 Difference]: With dead ends: 97 [2023-11-29 03:47:05,906 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 03:47:05,907 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 03:47:05,908 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:05,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:47:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 03:47:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-11-29 03:47:05,915 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 03:47:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2023-11-29 03:47:05,916 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 56 [2023-11-29 03:47:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:05,916 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2023-11-29 03:47:05,917 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 03:47:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2023-11-29 03:47:05,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 03:47:05,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:05,918 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 03:47:05,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:47:05,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:05,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash 986750680, now seen corresponding path program 1 times [2023-11-29 03:47:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111750376] [2023-11-29 03:47:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:05,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:06,673 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 03:47:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:06,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111750376] [2023-11-29 03:47:06,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111750376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:06,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314798874] [2023-11-29 03:47:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:06,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:06,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:06,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:06,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:47:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:07,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:47:07,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:07,539 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 03:47:07,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:07,556 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 03:47:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314798874] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:07,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:07,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-29 03:47:07,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986045814] [2023-11-29 03:47:07,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:07,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:47:07,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:47:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:47:07,559 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 03:47:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:08,164 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2023-11-29 03:47:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:47:08,165 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 03:47:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:08,166 INFO L225 Difference]: With dead ends: 86 [2023-11-29 03:47:08,166 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 03:47:08,167 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 03:47:08,168 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:08,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:47:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 03:47:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-29 03:47:08,176 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 03:47:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2023-11-29 03:47:08,177 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 59 [2023-11-29 03:47:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:08,178 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2023-11-29 03:47:08,178 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 03:47:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2023-11-29 03:47:08,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 03:47:08,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:08,180 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 03:47:08,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:08,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 03:47:08,381 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:08,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash -985336725, now seen corresponding path program 1 times [2023-11-29 03:47:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107881868] [2023-11-29 03:47:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:09,028 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 03:47:09,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107881868] [2023-11-29 03:47:09,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107881868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775773987] [2023-11-29 03:47:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:09,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:09,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:09,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:47:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:09,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:47:10,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:10,028 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 03:47:10,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:47:10,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775773987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:10,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:47:10,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 03:47:10,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129371312] [2023-11-29 03:47:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:10,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:47:10,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:10,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:47:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:47:10,031 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 03:47:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:10,664 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2023-11-29 03:47:10,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:47:10,665 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 03:47:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:10,666 INFO L225 Difference]: With dead ends: 107 [2023-11-29 03:47:10,666 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 03:47:10,667 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 03:47:10,668 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:10,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:47:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 03:47:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2023-11-29 03:47:10,675 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 03:47:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2023-11-29 03:47:10,676 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 62 [2023-11-29 03:47:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:10,676 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2023-11-29 03:47:10,677 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 03:47:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2023-11-29 03:47:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 03:47:10,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:10,678 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 03:47:10,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:10,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 03:47:10,879 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:10,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1664813890, now seen corresponding path program 1 times [2023-11-29 03:47:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637092546] [2023-11-29 03:47:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:10,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:11,391 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 03:47:11,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637092546] [2023-11-29 03:47:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637092546] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206271115] [2023-11-29 03:47:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:11,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:11,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:11,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:11,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:47:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:12,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:47:12,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:12,200 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 03:47:12,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:12,213 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 03:47:12,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206271115] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:12,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:12,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 03:47:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588574094] [2023-11-29 03:47:12,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:12,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:47:12,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:47:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:47:12,215 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 03:47:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:12,607 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2023-11-29 03:47:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:47:12,607 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 03:47:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:12,608 INFO L225 Difference]: With dead ends: 93 [2023-11-29 03:47:12,608 INFO L226 Difference]: Without dead ends: 77 [2023-11-29 03:47:12,608 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 03:47:12,609 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 03:47:12,610 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 03:47:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-29 03:47:12,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-29 03:47:12,615 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 03:47:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2023-11-29 03:47:12,616 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 65 [2023-11-29 03:47:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:12,616 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2023-11-29 03:47:12,616 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 03:47:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2023-11-29 03:47:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 03:47:12,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:12,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:47:12,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:12,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:12,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:12,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1900472348, now seen corresponding path program 1 times [2023-11-29 03:47:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:12,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459861644] [2023-11-29 03:47:12,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:12,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:13,323 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 03:47:13,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:13,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459861644] [2023-11-29 03:47:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459861644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:13,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020589970] [2023-11-29 03:47:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:13,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:13,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:13,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:13,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:47:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:14,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:47:14,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:14,042 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 03:47:14,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:14,060 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 03:47:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020589970] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:14,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:14,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-29 03:47:14,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816176348] [2023-11-29 03:47:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:14,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:47:14,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:14,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:47:14,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:47:14,062 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 03:47:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:14,483 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-11-29 03:47:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:47:14,484 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 03:47:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:14,485 INFO L225 Difference]: With dead ends: 83 [2023-11-29 03:47:14,485 INFO L226 Difference]: Without dead ends: 78 [2023-11-29 03:47:14,485 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 03:47:14,486 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 03:47:14,486 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 03:47:14,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-29 03:47:14,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-29 03:47:14,491 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 03:47:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2023-11-29 03:47:14,492 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 68 [2023-11-29 03:47:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:14,492 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2023-11-29 03:47:14,493 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 03:47:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2023-11-29 03:47:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 03:47:14,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:14,494 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 03:47:14,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:47:14,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:14,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:14,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1506015068, now seen corresponding path program 1 times [2023-11-29 03:47:14,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:14,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488647598] [2023-11-29 03:47:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:15,120 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 03:47:15,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488647598] [2023-11-29 03:47:15,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488647598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380119950] [2023-11-29 03:47:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:15,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:15,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:15,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:15,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:47:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:15,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:47:16,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:16,018 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 03:47:16,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:16,049 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 03:47:16,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380119950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:16,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:47:16,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-29 03:47:16,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423855367] [2023-11-29 03:47:16,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:16,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:47:16,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:47:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:47:16,052 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 03:47:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:17,204 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2023-11-29 03:47:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:47:17,205 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 03:47:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:17,206 INFO L225 Difference]: With dead ends: 111 [2023-11-29 03:47:17,206 INFO L226 Difference]: Without dead ends: 87 [2023-11-29 03:47:17,206 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 03:47:17,206 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 11 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:17,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 463 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:47:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-29 03:47:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-29 03:47:17,211 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 03:47:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2023-11-29 03:47:17,211 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 71 [2023-11-29 03:47:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:17,211 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2023-11-29 03:47:17,211 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 03:47:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2023-11-29 03:47:17,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 03:47:17,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:17,213 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 03:47:17,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:47:17,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:17,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:17,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1738722315, now seen corresponding path program 2 times [2023-11-29 03:47:17,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:17,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666815941] [2023-11-29 03:47:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:18,174 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 03:47:18,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:18,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666815941] [2023-11-29 03:47:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666815941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586168796] [2023-11-29 03:47:18,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:47:18,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:18,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:18,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:18,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:47:19,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:47:19,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:19,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:47:19,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:19,303 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 03:47:19,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:19,340 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 03:47:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586168796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:19,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:47:19,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2023-11-29 03:47:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800461338] [2023-11-29 03:47:19,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:47:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:47:19,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:47:19,342 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 03:47:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:20,733 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2023-11-29 03:47:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:47:20,734 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 03:47:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:20,735 INFO L225 Difference]: With dead ends: 125 [2023-11-29 03:47:20,735 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 03:47:20,735 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 03:47:20,736 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 25 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:20,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 475 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:47:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 03:47:20,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-11-29 03:47:20,742 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 03:47:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2023-11-29 03:47:20,743 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 80 [2023-11-29 03:47:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:20,743 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2023-11-29 03:47:20,743 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 03:47:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2023-11-29 03:47:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 03:47:20,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:20,744 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 03:47:20,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:47:20,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:20,945 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:20,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:20,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1779525407, now seen corresponding path program 3 times [2023-11-29 03:47:20,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:20,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495869728] [2023-11-29 03:47:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:21,735 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 03:47:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:21,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495869728] [2023-11-29 03:47:21,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495869728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:21,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755627817] [2023-11-29 03:47:21,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:47:21,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:21,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:21,738 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:21,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:47:22,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:47:22,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:22,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:47:22,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:23,026 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 03:47:23,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:47:23,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755627817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:23,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:47:23,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-29 03:47:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269724232] [2023-11-29 03:47:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:23,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:47:23,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:23,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:47:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:47:23,029 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 03:47:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:23,582 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2023-11-29 03:47:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:47:23,583 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 03:47:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:23,584 INFO L225 Difference]: With dead ends: 133 [2023-11-29 03:47:23,584 INFO L226 Difference]: Without dead ends: 102 [2023-11-29 03:47:23,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:47:23,585 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 14 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 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 03:47:23,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 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 03:47:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-29 03:47:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2023-11-29 03:47:23,590 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 03:47:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2023-11-29 03:47:23,591 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 92 [2023-11-29 03:47:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:23,591 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2023-11-29 03:47:23,592 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 03:47:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2023-11-29 03:47:23,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 03:47:23,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:23,592 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 03:47:23,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:47:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:47:23,793 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:23,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1876763282, now seen corresponding path program 1 times [2023-11-29 03:47:23,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:23,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914871219] [2023-11-29 03:47:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:23,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:24,561 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 03:47:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914871219] [2023-11-29 03:47:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914871219] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:24,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383773212] [2023-11-29 03:47:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:24,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:24,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:24,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:24,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:47:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:25,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:47:25,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:25,589 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 03:47:25,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:25,727 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 03:47:25,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383773212] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:25,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:47:25,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2023-11-29 03:47:25,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969228276] [2023-11-29 03:47:25,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:25,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:47:25,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:25,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:47:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:47:25,730 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 03:47:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:28,738 INFO L93 Difference]: Finished difference Result 157 states and 213 transitions. [2023-11-29 03:47:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:47:28,739 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 03:47:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:28,740 INFO L225 Difference]: With dead ends: 157 [2023-11-29 03:47:28,740 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 03:47:28,741 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 03:47:28,742 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 57 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:28,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 909 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 03:47:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 03:47:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2023-11-29 03:47:28,749 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 03:47:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2023-11-29 03:47:28,750 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 95 [2023-11-29 03:47:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:28,750 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2023-11-29 03:47:28,751 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 03:47:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2023-11-29 03:47:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 03:47:28,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:28,752 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 03:47:28,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:47:28,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:47:28,953 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:28,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash -850297529, now seen corresponding path program 2 times [2023-11-29 03:47:28,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:28,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427220977] [2023-11-29 03:47:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:28,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:29,826 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 03:47:29,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427220977] [2023-11-29 03:47:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427220977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465314973] [2023-11-29 03:47:29,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:47:29,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:29,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:29,828 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:29,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:47:31,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:47:31,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:31,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:47:31,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:31,164 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 03:47:31,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:47:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465314973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:47:31,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:47:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-29 03:47:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497328034] [2023-11-29 03:47:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:31,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:47:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:47:31,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:47:31,167 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 03:47:31,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:31,778 INFO L93 Difference]: Finished difference Result 201 states and 267 transitions. [2023-11-29 03:47:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:47:31,778 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 03:47:31,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:31,779 INFO L225 Difference]: With dead ends: 201 [2023-11-29 03:47:31,780 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 03:47:31,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:47:31,781 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:31,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 154 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:47:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 03:47:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2023-11-29 03:47:31,786 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 03:47:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 160 transitions. [2023-11-29 03:47:31,787 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 160 transitions. Word has length 116 [2023-11-29 03:47:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:31,787 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 160 transitions. [2023-11-29 03:47:31,787 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 03:47:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 160 transitions. [2023-11-29 03:47:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 03:47:31,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:31,789 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 03:47:31,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:31,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:47:31,989 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:31,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:31,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1297211509, now seen corresponding path program 1 times [2023-11-29 03:47:31,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:31,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470315963] [2023-11-29 03:47:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:31,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:33,035 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 03:47:33,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470315963] [2023-11-29 03:47:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470315963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065394363] [2023-11-29 03:47:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:33,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:33,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:33,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:33,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:47:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:34,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 03:47:34,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:34,066 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 03:47:34,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:34,439 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 03:47:34,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065394363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:34,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:47:34,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2023-11-29 03:47:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077462982] [2023-11-29 03:47:34,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:34,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:47:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:47:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:47:34,442 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 03:47:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:38,147 INFO L93 Difference]: Finished difference Result 198 states and 268 transitions. [2023-11-29 03:47:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:47:38,147 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 03:47:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:38,149 INFO L225 Difference]: With dead ends: 198 [2023-11-29 03:47:38,149 INFO L226 Difference]: Without dead ends: 146 [2023-11-29 03:47:38,150 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 03:47:38,150 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 75 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:38,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1232 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 03:47:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-29 03:47:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-29 03:47:38,157 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 03:47:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 192 transitions. [2023-11-29 03:47:38,158 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 192 transitions. Word has length 119 [2023-11-29 03:47:38,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:38,158 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 192 transitions. [2023-11-29 03:47:38,158 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 03:47:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 192 transitions. [2023-11-29 03:47:38,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 03:47:38,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:38,159 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 03:47:38,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:47:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:47:38,360 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:38,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 525373685, now seen corresponding path program 2 times [2023-11-29 03:47:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:38,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186152725] [2023-11-29 03:47:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:39,516 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 03:47:39,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186152725] [2023-11-29 03:47:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186152725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237853651] [2023-11-29 03:47:39,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:47:39,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:39,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:39,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:39,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:47:40,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:47:40,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:40,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:47:40,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-11-29 03:47:40,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-29 03:47:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237853651] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:40,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:40,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2023-11-29 03:47:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640119719] [2023-11-29 03:47:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:47:40,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:47:40,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:47:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:47:40,709 INFO L87 Difference]: Start difference. First operand 146 states and 192 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 03:47:41,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:41,102 INFO L93 Difference]: Finished difference Result 197 states and 260 transitions. [2023-11-29 03:47:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:47:41,103 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 143 [2023-11-29 03:47:41,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:41,104 INFO L225 Difference]: With dead ends: 197 [2023-11-29 03:47:41,104 INFO L226 Difference]: Without dead ends: 147 [2023-11-29 03:47:41,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:47:41,105 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:41,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:47:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-29 03:47:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-29 03:47:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.321917808219178) internal successors, (193), 146 states have internal predecessors, (193), 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 03:47:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2023-11-29 03:47:41,114 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 143 [2023-11-29 03:47:41,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:41,115 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2023-11-29 03:47:41,115 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 03:47:41,115 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2023-11-29 03:47:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 03:47:41,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:41,116 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, 1] [2023-11-29 03:47:41,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:47:41,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:47:41,317 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:41,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:41,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1934356562, now seen corresponding path program 1 times [2023-11-29 03:47:41,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:41,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976548656] [2023-11-29 03:47:41,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:41,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-29 03:47:42,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976548656] [2023-11-29 03:47:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976548656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886374954] [2023-11-29 03:47:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:42,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:42,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:42,666 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:42,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:47:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:43,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 3074 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 03:47:43,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 03:47:43,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-29 03:47:44,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886374954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:44,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:47:44,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2023-11-29 03:47:44,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580855891] [2023-11-29 03:47:44,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:44,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 03:47:44,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 03:47:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 03:47:44,152 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand has 39 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 39 states have internal predecessors, (196), 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 03:47:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:54,892 INFO L93 Difference]: Finished difference Result 241 states and 330 transitions. [2023-11-29 03:47:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 03:47:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 39 states have internal predecessors, (196), 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 144 [2023-11-29 03:47:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:54,895 INFO L225 Difference]: With dead ends: 241 [2023-11-29 03:47:54,895 INFO L226 Difference]: Without dead ends: 188 [2023-11-29 03:47:54,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 03:47:54,897 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 202 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:54,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 2205 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 03:47:54,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-29 03:47:54,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2023-11-29 03:47:54,906 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 03:47:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 245 transitions. [2023-11-29 03:47:54,907 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 245 transitions. Word has length 144 [2023-11-29 03:47:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:54,907 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 245 transitions. [2023-11-29 03:47:54,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 39 states have internal predecessors, (196), 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 03:47:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 245 transitions. [2023-11-29 03:47:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 03:47:54,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:54,909 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] [2023-11-29 03:47:54,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:47:55,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:47:55,110 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:55,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:55,110 INFO L85 PathProgramCache]: Analyzing trace with hash -439221181, now seen corresponding path program 2 times [2023-11-29 03:47:55,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:55,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148543930] [2023-11-29 03:47:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:55,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,697 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 03:47:56,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148543930] [2023-11-29 03:47:56,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148543930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529918760] [2023-11-29 03:47:56,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:47:56,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:56,699 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:56,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:47:58,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:47:58,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:58,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 3304 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 03:47:58,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:58,299 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 03:47:58,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:00,125 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 03:48:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529918760] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:00,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:48:00,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2023-11-29 03:48:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297740846] [2023-11-29 03:48:00,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 03:48:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 03:48:00,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 03:48:00,130 INFO L87 Difference]: Start difference. First operand 186 states and 245 transitions. Second operand has 51 states, 51 states have (on average 4.235294117647059) internal successors, (216), 51 states have internal predecessors, (216), 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 03:48:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:37,365 INFO L93 Difference]: Finished difference Result 326 states and 447 transitions. [2023-11-29 03:48:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 03:48:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.235294117647059) internal successors, (216), 51 states have internal predecessors, (216), 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 183 [2023-11-29 03:48:37,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:37,368 INFO L225 Difference]: With dead ends: 326 [2023-11-29 03:48:37,368 INFO L226 Difference]: Without dead ends: 237 [2023-11-29 03:48:37,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 03:48:37,370 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 302 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:37,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 3005 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-29 03:48:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-29 03:48:37,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-11-29 03:48:37,384 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 03:48:37,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 313 transitions. [2023-11-29 03:48:37,386 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 313 transitions. Word has length 183 [2023-11-29 03:48:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:37,386 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 313 transitions. [2023-11-29 03:48:37,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.235294117647059) internal successors, (216), 51 states have internal predecessors, (216), 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 03:48:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 313 transitions. [2023-11-29 03:48:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 03:48:37,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:37,389 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] [2023-11-29 03:48:37,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:48:37,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:48:37,590 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:48:37,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1034320690, now seen corresponding path program 3 times [2023-11-29 03:48:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:37,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644190085] [2023-11-29 03:48:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:37,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:39,966 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 03:48:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644190085] [2023-11-29 03:48:39,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644190085] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357819937] [2023-11-29 03:48:39,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:48:39,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:39,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:39,968 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:39,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:48:41,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:48:41,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:41,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:48:41,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 2218 trivial. 0 not checked. [2023-11-29 03:48:41,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2023-11-29 03:48:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357819937] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:41,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:41,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25, 5] total 29 [2023-11-29 03:48:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076162180] [2023-11-29 03:48:41,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:48:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:48:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:48:41,515 INFO L87 Difference]: Start difference. First operand 237 states and 313 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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 03:48:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:42,184 INFO L93 Difference]: Finished difference Result 248 states and 327 transitions. [2023-11-29 03:48:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:48:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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 234 [2023-11-29 03:48:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:42,187 INFO L225 Difference]: With dead ends: 248 [2023-11-29 03:48:42,187 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 03:48:42,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:48:42,189 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:42,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:48:42,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 03:48:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-29 03:48:42,199 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 03:48:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 314 transitions. [2023-11-29 03:48:42,200 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 314 transitions. Word has length 234 [2023-11-29 03:48:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:42,201 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 314 transitions. [2023-11-29 03:48:42,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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 03:48:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 314 transitions. [2023-11-29 03:48:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-29 03:48:42,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:42,203 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 03:48:42,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:48:42,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:42,404 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:48:42,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash -713360811, now seen corresponding path program 1 times [2023-11-29 03:48:42,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:42,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106422210] [2023-11-29 03:48:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:42,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,311 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 03:48:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:44,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106422210] [2023-11-29 03:48:44,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106422210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:44,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080486350] [2023-11-29 03:48:44,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:44,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:44,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:44,313 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:44,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:48:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:45,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 3556 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 03:48:45,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:46,041 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 03:48:46,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:47,315 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 03:48:47,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080486350] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:47,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:48:47,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 48, 25] total 72 [2023-11-29 03:48:47,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849978897] [2023-11-29 03:48:47,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:47,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-11-29 03:48:47,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-11-29 03:48:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=4500, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 03:48:47,319 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 03:49:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:03,964 INFO L93 Difference]: Finished difference Result 281 states and 379 transitions. [2023-11-29 03:49:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 03:49:03,964 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 03:49:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:03,966 INFO L225 Difference]: With dead ends: 281 [2023-11-29 03:49:03,967 INFO L226 Difference]: Without dead ends: 268 [2023-11-29 03:49:03,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=892, Invalid=5428, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 03:49:03,969 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 362 mSDsluCounter, 5342 mSDsCounter, 0 mSdLazyCounter, 6832 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 5462 SdHoareTripleChecker+Invalid, 6833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:03,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 5462 Invalid, 6833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6832 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-11-29 03:49:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-29 03:49:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-11-29 03:49:03,983 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 03:49:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 354 transitions. [2023-11-29 03:49:03,984 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 354 transitions. Word has length 237 [2023-11-29 03:49:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:03,985 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 354 transitions. [2023-11-29 03:49:03,985 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 03:49:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 354 transitions. [2023-11-29 03:49:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-11-29 03:49:03,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:03,987 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 03:49:03,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:49:04,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:04,187 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:49:04,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash 912881781, now seen corresponding path program 2 times [2023-11-29 03:49:04,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:04,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244679961] [2023-11-29 03:49:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:04,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,437 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 03:49:05,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:05,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244679961] [2023-11-29 03:49:05,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244679961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:49:05,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:49:05,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:49:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593952882] [2023-11-29 03:49:05,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:49:05,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:49:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:49:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:49:05,441 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 03:49:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:06,016 INFO L93 Difference]: Finished difference Result 493 states and 654 transitions. [2023-11-29 03:49:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:49:06,017 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 03:49:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:06,018 INFO L225 Difference]: With dead ends: 493 [2023-11-29 03:49:06,018 INFO L226 Difference]: Without dead ends: 269 [2023-11-29 03:49:06,019 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 03:49:06,020 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:06,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:49:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-29 03:49:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-11-29 03:49:06,059 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 03:49:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 355 transitions. [2023-11-29 03:49:06,061 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 355 transitions. Word has length 267 [2023-11-29 03:49:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:06,061 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 355 transitions. [2023-11-29 03:49:06,061 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 03:49:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 355 transitions. [2023-11-29 03:49:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-29 03:49:06,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:06,063 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 03:49:06,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 03:49:06,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:49:06,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash 849617399, now seen corresponding path program 1 times [2023-11-29 03:49:06,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:06,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156423350] [2023-11-29 03:49:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:06,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:07,419 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 03:49:07,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156423350] [2023-11-29 03:49:07,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156423350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:49:07,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268197093] [2023-11-29 03:49:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:07,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:07,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:07,424 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:07,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:49:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:08,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 3741 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:49:08,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:08,988 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 03:49:08,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:09,027 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 03:49:09,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268197093] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:49:09,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:09,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 11 [2023-11-29 03:49:09,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216424942] [2023-11-29 03:49:09,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:49:09,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:49:09,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:49:09,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:49:09,030 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 03:49:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:09,765 INFO L93 Difference]: Finished difference Result 281 states and 370 transitions. [2023-11-29 03:49:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:49:09,765 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 03:49:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:09,768 INFO L225 Difference]: With dead ends: 281 [2023-11-29 03:49:09,768 INFO L226 Difference]: Without dead ends: 270 [2023-11-29 03:49:09,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:49:09,769 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:09,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 232 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:49:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-29 03:49:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-11-29 03:49:09,785 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 03:49:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 356 transitions. [2023-11-29 03:49:09,787 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 356 transitions. Word has length 268 [2023-11-29 03:49:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:09,787 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 356 transitions. [2023-11-29 03:49:09,787 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 03:49:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 356 transitions. [2023-11-29 03:49:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-11-29 03:49:09,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:09,789 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 03:49:09,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:49:09,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:49:09,990 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:49:09,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:09,991 INFO L85 PathProgramCache]: Analyzing trace with hash -350447209, now seen corresponding path program 1 times [2023-11-29 03:49:09,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:09,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834960670] [2023-11-29 03:49:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:09,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:11,422 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 03:49:11,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834960670] [2023-11-29 03:49:11,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834960670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:49:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059870891] [2023-11-29 03:49:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:11,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:11,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:11,424 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:11,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:49:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:12,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 3746 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-29 03:49:12,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:12,669 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 03:49:12,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:14,228 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 03:49:14,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059870891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:14,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:49:14,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 39] total 45 [2023-11-29 03:49:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093003344] [2023-11-29 03:49:14,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:14,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 03:49:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 03:49:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1882, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 03:49:14,231 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 03:50:18,423 WARN L293 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 118 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:56:04,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:56:04,466 INFO L93 Difference]: Finished difference Result 512 states and 682 transitions. [2023-11-29 03:56:04,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 03:56:04,466 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 03:56:04,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:56:04,468 INFO L225 Difference]: With dead ends: 512 [2023-11-29 03:56:04,468 INFO L226 Difference]: Without dead ends: 286 [2023-11-29 03:56:04,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 403.7s TimeCoverageRelationStatistics Valid=1313, Invalid=6695, Unknown=2, NotChecked=0, Total=8010 [2023-11-29 03:56:04,471 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 653 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:56:04,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 3027 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-29 03:56:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-29 03:56:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2023-11-29 03:56:04,488 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 03:56:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 375 transitions. [2023-11-29 03:56:04,490 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 375 transitions. Word has length 269 [2023-11-29 03:56:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:56:04,490 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 375 transitions. [2023-11-29 03:56:04,490 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 03:56:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 375 transitions. [2023-11-29 03:56:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-29 03:56:04,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:56:04,492 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 03:56:04,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:56:04,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:56:04,693 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:56:04,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -136961081, now seen corresponding path program 2 times [2023-11-29 03:56:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:04,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917090407] [2023-11-29 03:56:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:04,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:05,944 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 03:56:05,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:05,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917090407] [2023-11-29 03:56:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917090407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:56:05,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001219711] [2023-11-29 03:56:05,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:56:05,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:05,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:05,946 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:05,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec5afe0f-d439-43b4-b784-151d38df8bc9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:56:07,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:56:07,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:56:07,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 3823 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-29 03:56:07,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:07,663 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 03:56:07,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:09,730 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 03:56:09,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001219711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:09,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:56:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 42] total 52 [2023-11-29 03:56:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553555813] [2023-11-29 03:56:09,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:09,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 03:56:09,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:09,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 03:56:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2511, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 03:56:09,734 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)