./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/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_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/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_639a798f-e592-484c-b1ce-880f4549335c/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 1035d962e39280c92969b9f7066ecadbc22a9f715d97d0ee182811f942c88e9b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:56:48,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:56:48,773 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:56:48,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:56:48,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:56:48,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:56:48,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:56:48,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:56:48,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:56:48,803 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:56:48,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:56:48,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:56:48,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:56:48,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:56:48,806 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:56:48,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:56:48,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:56:48,808 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:56:48,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:56:48,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:56:48,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:56:48,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:56:48,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:56:48,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:56:48,811 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:56:48,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:56:48,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:56:48,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:56:48,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:56:48,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:56:48,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:56:48,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:56:48,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:56:48,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:56:48,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:56:48,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:56:48,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:56:48,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:56:48,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:56:48,816 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:56:48,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:56:48,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:56:48,817 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_639a798f-e592-484c-b1ce-880f4549335c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1035d962e39280c92969b9f7066ecadbc22a9f715d97d0ee182811f942c88e9b [2023-11-29 06:56:49,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:56:49,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:56:49,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:56:49,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:56:49,079 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:56:49,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i [2023-11-29 06:56:51,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:56:52,040 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:56:52,040 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i [2023-11-29 06:56:52,050 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/data/bde45f67f/27135975e19a485ea0740bc55386cb96/FLAG07e4c629e [2023-11-29 06:56:52,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/data/bde45f67f/27135975e19a485ea0740bc55386cb96 [2023-11-29 06:56:52,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:56:52,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:56:52,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:56:52,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:56:52,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:56:52,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e04dbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52, skipping insertion in model container [2023-11-29 06:56:52,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,107 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:56:52,250 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_639a798f-e592-484c-b1ce-880f4549335c/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i[919,932] [2023-11-29 06:56:52,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:56:52,317 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:56:52,330 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_639a798f-e592-484c-b1ce-880f4549335c/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-81.i[919,932] [2023-11-29 06:56:52,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:56:52,375 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:56:52,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52 WrapperNode [2023-11-29 06:56:52,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:56:52,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:56:52,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:56:52,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:56:52,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,435 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2023-11-29 06:56:52,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:56:52,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:56:52,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:56:52,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:56:52,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,470 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 06:56:52,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:56:52,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:56:52,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:56:52,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:56:52,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (1/1) ... [2023-11-29 06:56:52,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:56:52,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:52,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:56:52,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:56:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:56:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:56:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:56:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:56:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:56:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:56:52,649 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:56:52,650 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:56:52,994 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:56:53,023 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:56:53,023 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:56:53,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:56:53 BoogieIcfgContainer [2023-11-29 06:56:53,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:56:53,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:56:53,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:56:53,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:56:53,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:56:52" (1/3) ... [2023-11-29 06:56:53,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fdfa6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:56:53, skipping insertion in model container [2023-11-29 06:56:53,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:52" (2/3) ... [2023-11-29 06:56:53,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fdfa6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:56:53, skipping insertion in model container [2023-11-29 06:56:53,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:56:53" (3/3) ... [2023-11-29 06:56:53,032 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-81.i [2023-11-29 06:56:53,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:56:53,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:56:53,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:56:53,142 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;@e7e73b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:56:53,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:56:53,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 40 states have internal predecessors, (57), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 06:56:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 06:56:53,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:53,161 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:53,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:53,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:53,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1352908301, now seen corresponding path program 1 times [2023-11-29 06:56:53,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:53,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809211577] [2023-11-29 06:56:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:53,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:53,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:53,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809211577] [2023-11-29 06:56:53,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:56:53,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184022408] [2023-11-29 06:56:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:53,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:53,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:53,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:56:53,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:56:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:53,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:56:53,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:56:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-29 06:56:53,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:56:53,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184022408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:56:53,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:56:53,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:56:53,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505121551] [2023-11-29 06:56:53,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:56:53,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:56:53,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:53,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:56:53,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:56:53,645 INFO L87 Difference]: Start difference. First operand has 68 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 40 states have internal predecessors, (57), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-29 06:56:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:53,687 INFO L93 Difference]: Finished difference Result 133 states and 242 transitions. [2023-11-29 06:56:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:56:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 158 [2023-11-29 06:56:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:53,698 INFO L225 Difference]: With dead ends: 133 [2023-11-29 06:56:53,698 INFO L226 Difference]: Without dead ends: 66 [2023-11-29 06:56:53,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 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 06:56:53,706 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:53,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:56:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-29 06:56:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-29 06:56:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 38 states have (on average 1.368421052631579) internal successors, (52), 38 states have internal predecessors, (52), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 06:56:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 104 transitions. [2023-11-29 06:56:53,758 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 104 transitions. Word has length 158 [2023-11-29 06:56:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:53,759 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 104 transitions. [2023-11-29 06:56:53,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-29 06:56:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 104 transitions. [2023-11-29 06:56:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 06:56:53,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:53,764 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:53,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:56:53,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:56:53,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:53,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2140315469, now seen corresponding path program 1 times [2023-11-29 06:56:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:53,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598000414] [2023-11-29 06:56:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:53,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:54,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:56:54,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083157660] [2023-11-29 06:56:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:54,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:54,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:54,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:56:54,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:56:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:54,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:56:54,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:56:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 610 proven. 117 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-11-29 06:56:54,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:56:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 120 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2023-11-29 06:56:55,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598000414] [2023-11-29 06:56:55,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:56:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083157660] [2023-11-29 06:56:55,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083157660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:56:55,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:56:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 06:56:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782255450] [2023-11-29 06:56:55,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:56:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:56:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:56:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:56:55,359 INFO L87 Difference]: Start difference. First operand 66 states and 104 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-29 06:56:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:56,211 INFO L93 Difference]: Finished difference Result 223 states and 328 transitions. [2023-11-29 06:56:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 06:56:56,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) Word has length 158 [2023-11-29 06:56:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:56,216 INFO L225 Difference]: With dead ends: 223 [2023-11-29 06:56:56,216 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 06:56:56,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:56:56,220 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 197 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:56,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 234 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:56:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 06:56:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 112. [2023-11-29 06:56:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 06:56:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 162 transitions. [2023-11-29 06:56:56,249 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 162 transitions. Word has length 158 [2023-11-29 06:56:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:56,250 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 162 transitions. [2023-11-29 06:56:56,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-29 06:56:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 162 transitions. [2023-11-29 06:56:56,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 06:56:56,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:56,254 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:56,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:56:56,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:56,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:56,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1584998970, now seen corresponding path program 1 times [2023-11-29 06:56:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:56,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193940257] [2023-11-29 06:56:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:56,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:56,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:56:56,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744607439] [2023-11-29 06:56:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:56,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:56,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:56,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:56:56,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:56:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:56,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:56:56,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:56:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2023-11-29 06:56:56,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:56:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 24 proven. 51 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-29 06:56:57,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193940257] [2023-11-29 06:56:57,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:56:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744607439] [2023-11-29 06:56:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744607439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:56:57,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:56:57,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-11-29 06:56:57,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881222377] [2023-11-29 06:56:57,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:56:57,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:56:57,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:56:57,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:56:57,033 INFO L87 Difference]: Start difference. First operand 112 states and 162 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-29 06:56:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:57,602 INFO L93 Difference]: Finished difference Result 309 states and 438 transitions. [2023-11-29 06:56:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:56:57,602 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 159 [2023-11-29 06:56:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:57,607 INFO L225 Difference]: With dead ends: 309 [2023-11-29 06:56:57,607 INFO L226 Difference]: Without dead ends: 198 [2023-11-29 06:56:57,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:56:57,610 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 122 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:57,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 428 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:56:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-29 06:56:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 153. [2023-11-29 06:56:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 96 states have internal predecessors, (112), 47 states have call successors, (47), 11 states have call predecessors, (47), 11 states have return successors, (47), 45 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 06:56:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 206 transitions. [2023-11-29 06:56:57,644 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 206 transitions. Word has length 159 [2023-11-29 06:56:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:57,645 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 206 transitions. [2023-11-29 06:56:57,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-29 06:56:57,646 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 206 transitions. [2023-11-29 06:56:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 06:56:57,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:57,649 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:57,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:56:57,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:57,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:57,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash -705105138, now seen corresponding path program 1 times [2023-11-29 06:56:57,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698069962] [2023-11-29 06:56:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:57,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:57,884 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:56:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347192811] [2023-11-29 06:56:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:57,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:56:57,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:57,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:56:57,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:56:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:58,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:56:58,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:56:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-29 06:56:58,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:56:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-29 06:56:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698069962] [2023-11-29 06:56:59,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:56:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347192811] [2023-11-29 06:56:59,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347192811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:56:59,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:56:59,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-29 06:56:59,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221297435] [2023-11-29 06:56:59,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:56:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:56:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:56:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:56:59,045 INFO L87 Difference]: Start difference. First operand 153 states and 206 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 06:57:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:00,359 INFO L93 Difference]: Finished difference Result 412 states and 565 transitions. [2023-11-29 06:57:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:57:00,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 160 [2023-11-29 06:57:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:00,363 INFO L225 Difference]: With dead ends: 412 [2023-11-29 06:57:00,363 INFO L226 Difference]: Without dead ends: 293 [2023-11-29 06:57:00,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 06:57:00,365 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 546 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:00,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 377 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:57:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-29 06:57:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 232. [2023-11-29 06:57:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 144 states have internal predecessors, (166), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 06:57:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 312 transitions. [2023-11-29 06:57:00,417 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 312 transitions. Word has length 160 [2023-11-29 06:57:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:00,418 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 312 transitions. [2023-11-29 06:57:00,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 06:57:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 312 transitions. [2023-11-29 06:57:00,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 06:57:00,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:00,421 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:00,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:57:00,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:00,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:00,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1716222388, now seen corresponding path program 1 times [2023-11-29 06:57:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:00,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987615886] [2023-11-29 06:57:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:00,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:00,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845660572] [2023-11-29 06:57:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:00,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:00,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:00,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:57:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:00,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:57:00,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 06:57:11,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:57:18,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:18,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987615886] [2023-11-29 06:57:18,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:18,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845660572] [2023-11-29 06:57:18,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845660572] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:18,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:18,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 06:57:18,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294321019] [2023-11-29 06:57:18,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:18,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:57:18,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:18,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:57:18,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:57:18,314 INFO L87 Difference]: Start difference. First operand 232 states and 312 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:57:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:19,754 INFO L93 Difference]: Finished difference Result 491 states and 650 transitions. [2023-11-29 06:57:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:57:19,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 160 [2023-11-29 06:57:19,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:19,758 INFO L225 Difference]: With dead ends: 491 [2023-11-29 06:57:19,758 INFO L226 Difference]: Without dead ends: 336 [2023-11-29 06:57:19,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:57:19,760 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 112 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:19,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 423 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:57:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-29 06:57:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 254. [2023-11-29 06:57:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 164 states have (on average 1.1951219512195121) internal successors, (196), 166 states have internal predecessors, (196), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 06:57:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 342 transitions. [2023-11-29 06:57:19,809 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 342 transitions. Word has length 160 [2023-11-29 06:57:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:19,810 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 342 transitions. [2023-11-29 06:57:19,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:57:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 342 transitions. [2023-11-29 06:57:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 06:57:19,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:19,813 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:19,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:57:20,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:20,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:20,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1458056950, now seen corresponding path program 1 times [2023-11-29 06:57:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:20,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240704410] [2023-11-29 06:57:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:20,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:20,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916220670] [2023-11-29 06:57:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:20,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:20,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:20,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:20,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:57:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:20,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 06:57:20,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 738 proven. 291 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-29 06:57:42,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:57:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240704410] [2023-11-29 06:57:49,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916220670] [2023-11-29 06:57:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916220670] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:49,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:49,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [37] total 44 [2023-11-29 06:57:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305195562] [2023-11-29 06:57:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:57:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:57:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1489, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 06:57:49,381 INFO L87 Difference]: Start difference. First operand 254 states and 342 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:57:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:50,724 INFO L93 Difference]: Finished difference Result 502 states and 663 transitions. [2023-11-29 06:57:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:57:50,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 160 [2023-11-29 06:57:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:50,728 INFO L225 Difference]: With dead ends: 502 [2023-11-29 06:57:50,728 INFO L226 Difference]: Without dead ends: 336 [2023-11-29 06:57:50,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=435, Invalid=1821, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 06:57:50,731 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 136 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:50,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 325 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:57:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-29 06:57:50,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 254. [2023-11-29 06:57:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 164 states have (on average 1.1951219512195121) internal successors, (196), 166 states have internal predecessors, (196), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 06:57:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 342 transitions. [2023-11-29 06:57:50,772 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 342 transitions. Word has length 160 [2023-11-29 06:57:50,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:50,772 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 342 transitions. [2023-11-29 06:57:50,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:57:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 342 transitions. [2023-11-29 06:57:50,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 06:57:50,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:50,774 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:50,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:57:50,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 06:57:50,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:50,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:50,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1991938894, now seen corresponding path program 1 times [2023-11-29 06:57:50,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:50,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284566341] [2023-11-29 06:57:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:50,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4716929] [2023-11-29 06:57:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:51,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:51,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:51,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:51,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:57:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:51,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:57:51,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 58 proven. 207 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-11-29 06:57:52,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2023-11-29 06:57:52,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284566341] [2023-11-29 06:57:52,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4716929] [2023-11-29 06:57:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4716929] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:52,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:52,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2023-11-29 06:57:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749317142] [2023-11-29 06:57:52,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 06:57:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 06:57:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:57:52,758 INFO L87 Difference]: Start difference. First operand 254 states and 342 transitions. Second operand has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 6 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (52), 4 states have call predecessors, (52), 6 states have call successors, (52) [2023-11-29 06:57:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:54,652 INFO L93 Difference]: Finished difference Result 514 states and 681 transitions. [2023-11-29 06:57:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:57:54,652 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 6 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (52), 4 states have call predecessors, (52), 6 states have call successors, (52) Word has length 160 [2023-11-29 06:57:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:54,655 INFO L225 Difference]: With dead ends: 514 [2023-11-29 06:57:54,656 INFO L226 Difference]: Without dead ends: 336 [2023-11-29 06:57:54,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=594, Invalid=1298, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 06:57:54,658 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 406 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:54,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 490 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:57:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-29 06:57:54,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 260. [2023-11-29 06:57:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 169 states have (on average 1.1775147928994083) internal successors, (199), 171 states have internal predecessors, (199), 73 states have call successors, (73), 17 states have call predecessors, (73), 17 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 06:57:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 345 transitions. [2023-11-29 06:57:54,715 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 345 transitions. Word has length 160 [2023-11-29 06:57:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:54,715 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 345 transitions. [2023-11-29 06:57:54,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 6 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (52), 4 states have call predecessors, (52), 6 states have call successors, (52) [2023-11-29 06:57:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 345 transitions. [2023-11-29 06:57:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 06:57:54,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:54,717 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:54,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:57:54,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:54,918 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:54,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:54,918 INFO L85 PathProgramCache]: Analyzing trace with hash 251808950, now seen corresponding path program 1 times [2023-11-29 06:57:54,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778012514] [2023-11-29 06:57:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:54,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:54,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:54,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080454217] [2023-11-29 06:57:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:54,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:54,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:54,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:54,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:57:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:55,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:57:55,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:57:55,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:57:55,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778012514] [2023-11-29 06:57:55,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:57:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080454217] [2023-11-29 06:57:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080454217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:55,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:55,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:57:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732765657] [2023-11-29 06:57:55,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:55,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:57:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:55,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:57:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:57:55,046 INFO L87 Difference]: Start difference. First operand 260 states and 345 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:57:55,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:55,164 INFO L93 Difference]: Finished difference Result 513 states and 664 transitions. [2023-11-29 06:57:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:57:55,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 160 [2023-11-29 06:57:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:55,166 INFO L225 Difference]: With dead ends: 513 [2023-11-29 06:57:55,167 INFO L226 Difference]: Without dead ends: 340 [2023-11-29 06:57:55,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 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 06:57:55,168 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 32 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:55,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 191 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:57:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-11-29 06:57:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2023-11-29 06:57:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 231 states have (on average 1.1385281385281385) internal successors, (263), 235 states have internal predecessors, (263), 81 states have call successors, (81), 23 states have call predecessors, (81), 23 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 06:57:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 425 transitions. [2023-11-29 06:57:55,228 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 425 transitions. Word has length 160 [2023-11-29 06:57:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:55,229 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 425 transitions. [2023-11-29 06:57:55,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:57:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 425 transitions. [2023-11-29 06:57:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 06:57:55,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:55,231 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:55,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:57:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:55,431 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:55,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -198476362, now seen corresponding path program 1 times [2023-11-29 06:57:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005470009] [2023-11-29 06:57:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:55,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:57:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794170412] [2023-11-29 06:57:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:55,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:55,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:55,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:55,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:57:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:55,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:57:55,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 645 proven. 114 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2023-11-29 06:57:57,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:58:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:58:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005470009] [2023-11-29 06:58:03,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:58:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794170412] [2023-11-29 06:58:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794170412] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:03,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:58:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-11-29 06:58:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929279421] [2023-11-29 06:58:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:58:03,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:58:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:58:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:58:03,997 INFO L87 Difference]: Start difference. First operand 336 states and 425 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:58:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:58:05,524 INFO L93 Difference]: Finished difference Result 543 states and 688 transitions. [2023-11-29 06:58:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:58:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 160 [2023-11-29 06:58:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:58:05,528 INFO L225 Difference]: With dead ends: 543 [2023-11-29 06:58:05,528 INFO L226 Difference]: Without dead ends: 375 [2023-11-29 06:58:05,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:58:05,529 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 124 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:58:05,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 487 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:58:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-29 06:58:05,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 344. [2023-11-29 06:58:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 239 states have (on average 1.1422594142259415) internal successors, (273), 243 states have internal predecessors, (273), 81 states have call successors, (81), 23 states have call predecessors, (81), 23 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 06:58:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 435 transitions. [2023-11-29 06:58:05,590 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 435 transitions. Word has length 160 [2023-11-29 06:58:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:58:05,591 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 435 transitions. [2023-11-29 06:58:05,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:58:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 435 transitions. [2023-11-29 06:58:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 06:58:05,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:58:05,592 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:05,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:58:05,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:05,793 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:58:05,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:58:05,794 INFO L85 PathProgramCache]: Analyzing trace with hash 502588216, now seen corresponding path program 1 times [2023-11-29 06:58:05,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:58:05,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569717983] [2023-11-29 06:58:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:05,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:58:05,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:58:05,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812698576] [2023-11-29 06:58:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:05,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:05,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:58:05,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:58:05,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:58:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:06,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:58:06,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 577 proven. 183 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-11-29 06:58:08,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:58:14,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:58:14,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569717983] [2023-11-29 06:58:14,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:58:14,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812698576] [2023-11-29 06:58:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812698576] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:14,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:58:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 24 [2023-11-29 06:58:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122778880] [2023-11-29 06:58:14,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:58:14,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:58:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:14,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:58:14,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:58:14,270 INFO L87 Difference]: Start difference. First operand 344 states and 435 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:58:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:58:15,641 INFO L93 Difference]: Finished difference Result 551 states and 697 transitions. [2023-11-29 06:58:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:58:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 160 [2023-11-29 06:58:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:58:15,644 INFO L225 Difference]: With dead ends: 551 [2023-11-29 06:58:15,644 INFO L226 Difference]: Without dead ends: 375 [2023-11-29 06:58:15,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:58:15,645 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 168 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:58:15,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 365 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:58:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-29 06:58:15,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 344. [2023-11-29 06:58:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 239 states have (on average 1.1422594142259415) internal successors, (273), 243 states have internal predecessors, (273), 81 states have call successors, (81), 23 states have call predecessors, (81), 23 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 06:58:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 435 transitions. [2023-11-29 06:58:15,707 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 435 transitions. Word has length 160 [2023-11-29 06:58:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:58:15,707 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 435 transitions. [2023-11-29 06:58:15,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:58:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 435 transitions. [2023-11-29 06:58:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 06:58:15,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:58:15,709 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:15,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:58:15,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:58:15,910 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:58:15,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:58:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1544944041, now seen corresponding path program 1 times [2023-11-29 06:58:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:58:15,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516266376] [2023-11-29 06:58:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:15,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:58:15,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:58:15,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986122370] [2023-11-29 06:58:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:15,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:15,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:58:15,927 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:58:15,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:58:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:16,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:58:16,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-29 06:58:24,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:29,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:58:29,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:58:29,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516266376] [2023-11-29 06:58:29,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:58:29,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986122370] [2023-11-29 06:58:29,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986122370] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:29,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:58:29,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2023-11-29 06:58:29,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478116589] [2023-11-29 06:58:29,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:58:29,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:58:29,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:29,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:58:29,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:58:29,523 INFO L87 Difference]: Start difference. First operand 344 states and 435 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:58:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:58:30,714 INFO L93 Difference]: Finished difference Result 583 states and 732 transitions. [2023-11-29 06:58:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:58:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 06:58:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:58:30,717 INFO L225 Difference]: With dead ends: 583 [2023-11-29 06:58:30,717 INFO L226 Difference]: Without dead ends: 407 [2023-11-29 06:58:30,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:58:30,718 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 149 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:58:30,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 420 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:58:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-29 06:58:30,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 347. [2023-11-29 06:58:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 242 states have (on average 1.1446280991735538) internal successors, (277), 246 states have internal predecessors, (277), 81 states have call successors, (81), 23 states have call predecessors, (81), 23 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 06:58:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 439 transitions. [2023-11-29 06:58:30,779 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 439 transitions. Word has length 161 [2023-11-29 06:58:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:58:30,779 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 439 transitions. [2023-11-29 06:58:30,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:58:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 439 transitions. [2023-11-29 06:58:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 06:58:30,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:58:30,781 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:30,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:58:30,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:30,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:58:30,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:58:30,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1286778603, now seen corresponding path program 1 times [2023-11-29 06:58:30,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:58:30,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920257536] [2023-11-29 06:58:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:30,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:58:31,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:58:31,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386210372] [2023-11-29 06:58:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:31,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:31,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:58:31,003 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:58:31,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:58:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:31,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 06:58:31,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 06:58:40,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:58:45,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:58:45,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920257536] [2023-11-29 06:58:45,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:58:45,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386210372] [2023-11-29 06:58:45,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386210372] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:45,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:58:45,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 06:58:45,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009994978] [2023-11-29 06:58:45,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:58:45,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:58:45,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:58:45,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:58:45,609 INFO L87 Difference]: Start difference. First operand 347 states and 439 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:58:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:58:46,819 INFO L93 Difference]: Finished difference Result 586 states and 735 transitions. [2023-11-29 06:58:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:58:46,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 06:58:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:58:46,822 INFO L225 Difference]: With dead ends: 586 [2023-11-29 06:58:46,822 INFO L226 Difference]: Without dead ends: 407 [2023-11-29 06:58:46,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2023-11-29 06:58:46,823 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 141 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:58:46,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 430 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:58:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-29 06:58:46,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 344. [2023-11-29 06:58:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 239 states have (on average 1.1422594142259415) internal successors, (273), 243 states have internal predecessors, (273), 81 states have call successors, (81), 23 states have call predecessors, (81), 23 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 06:58:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 435 transitions. [2023-11-29 06:58:46,885 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 435 transitions. Word has length 161 [2023-11-29 06:58:46,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:58:46,885 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 435 transitions. [2023-11-29 06:58:46,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:58:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 435 transitions. [2023-11-29 06:58:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 06:58:46,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:58:46,887 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:46,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:58:47,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 06:58:47,088 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:58:47,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:58:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash -908886639, now seen corresponding path program 1 times [2023-11-29 06:58:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:58:47,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436621185] [2023-11-29 06:58:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:47,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:58:47,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:58:47,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139448382] [2023-11-29 06:58:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:47,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:47,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:58:47,105 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:58:47,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:58:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:47,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 06:58:47,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 06:58:59,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:59:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:59:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436621185] [2023-11-29 06:59:05,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:59:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139448382] [2023-11-29 06:59:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139448382] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:59:05,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:59:05,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2023-11-29 06:59:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123567175] [2023-11-29 06:59:05,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:59:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:59:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:59:05,788 INFO L87 Difference]: Start difference. First operand 344 states and 435 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:59:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:59:08,462 INFO L93 Difference]: Finished difference Result 663 states and 834 transitions. [2023-11-29 06:59:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:59:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 06:59:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:59:08,465 INFO L225 Difference]: With dead ends: 663 [2023-11-29 06:59:08,465 INFO L226 Difference]: Without dead ends: 434 [2023-11-29 06:59:08,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:59:08,466 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 242 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:59:08,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 376 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:59:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-29 06:59:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 347. [2023-11-29 06:59:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 242 states have (on average 1.1528925619834711) internal successors, (279), 246 states have internal predecessors, (279), 81 states have call successors, (81), 23 states have call predecessors, (81), 23 states have return successors, (81), 77 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-29 06:59:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 441 transitions. [2023-11-29 06:59:08,528 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 441 transitions. Word has length 161 [2023-11-29 06:59:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:59:08,528 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 441 transitions. [2023-11-29 06:59:08,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:59:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 441 transitions. [2023-11-29 06:59:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 06:59:08,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:59:08,529 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:08,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 06:59:08,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 06:59:08,730 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:59:08,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:08,730 INFO L85 PathProgramCache]: Analyzing trace with hash -265080363, now seen corresponding path program 1 times [2023-11-29 06:59:08,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:08,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171072970] [2023-11-29 06:59:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:08,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:08,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:59:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984837489] [2023-11-29 06:59:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:08,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:08,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:59:08,745 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:59:08,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:59:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:08,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:59:08,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:59:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-29 06:59:09,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:59:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-29 06:59:09,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:09,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171072970] [2023-11-29 06:59:09,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:59:09,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984837489] [2023-11-29 06:59:09,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984837489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:59:09,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:59:09,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-11-29 06:59:09,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792015918] [2023-11-29 06:59:09,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:59:09,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:59:09,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:09,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:59:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:59:09,433 INFO L87 Difference]: Start difference. First operand 347 states and 441 transitions. Second operand has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 06:59:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:59:10,042 INFO L93 Difference]: Finished difference Result 621 states and 775 transitions. [2023-11-29 06:59:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:59:10,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 161 [2023-11-29 06:59:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:59:10,046 INFO L225 Difference]: With dead ends: 621 [2023-11-29 06:59:10,046 INFO L226 Difference]: Without dead ends: 386 [2023-11-29 06:59:10,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:59:10,047 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 314 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:59:10,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 331 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:59:10,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-29 06:59:10,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 296. [2023-11-29 06:59:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 201 states have (on average 1.1293532338308458) internal successors, (227), 203 states have internal predecessors, (227), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 06:59:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 373 transitions. [2023-11-29 06:59:10,142 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 373 transitions. Word has length 161 [2023-11-29 06:59:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:59:10,143 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 373 transitions. [2023-11-29 06:59:10,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 06:59:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 373 transitions. [2023-11-29 06:59:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 06:59:10,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:59:10,145 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:10,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:59:10,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:59:10,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:59:10,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:10,347 INFO L85 PathProgramCache]: Analyzing trace with hash -650721201, now seen corresponding path program 1 times [2023-11-29 06:59:10,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:10,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711327776] [2023-11-29 06:59:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:10,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:10,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:59:10,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288994918] [2023-11-29 06:59:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:10,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:10,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:59:10,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:59:10,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:59:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:10,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:59:10,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:59:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 06:59:23,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:59:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 06:59:30,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:30,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711327776] [2023-11-29 06:59:30,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:59:30,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288994918] [2023-11-29 06:59:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288994918] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:59:30,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:59:30,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-11-29 06:59:30,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819780170] [2023-11-29 06:59:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:30,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:59:30,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:59:30,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:59:30,010 INFO L87 Difference]: Start difference. First operand 296 states and 373 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:59:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:59:33,004 INFO L93 Difference]: Finished difference Result 556 states and 690 transitions. [2023-11-29 06:59:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:59:33,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 06:59:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:59:33,007 INFO L225 Difference]: With dead ends: 556 [2023-11-29 06:59:33,007 INFO L226 Difference]: Without dead ends: 358 [2023-11-29 06:59:33,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:59:33,009 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 142 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:59:33,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 526 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:59:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-29 06:59:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 285. [2023-11-29 06:59:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 190 states have (on average 1.1263157894736842) internal successors, (214), 192 states have internal predecessors, (214), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 06:59:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 360 transitions. [2023-11-29 06:59:33,064 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 360 transitions. Word has length 161 [2023-11-29 06:59:33,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:59:33,064 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 360 transitions. [2023-11-29 06:59:33,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 06:59:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 360 transitions. [2023-11-29 06:59:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 06:59:33,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:59:33,066 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:33,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:59:33,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:33,266 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:59:33,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:33,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2046242523, now seen corresponding path program 1 times [2023-11-29 06:59:33,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:33,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103962520] [2023-11-29 06:59:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:33,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:33,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:59:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948340651] [2023-11-29 06:59:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:33,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:33,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:59:33,281 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:59:33,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:59:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:33,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:59:33,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:00:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 07:00:56,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:00:56,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:56,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103962520] [2023-11-29 07:00:56,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:00:56,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948340651] [2023-11-29 07:00:56,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948340651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:56,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:56,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:00:56,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948289109] [2023-11-29 07:00:56,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:56,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:00:56,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:56,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:00:56,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:00:56,782 INFO L87 Difference]: Start difference. First operand 285 states and 360 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 07:00:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:00:57,127 INFO L93 Difference]: Finished difference Result 334 states and 411 transitions. [2023-11-29 07:00:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:00:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 162 [2023-11-29 07:00:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:00:57,130 INFO L225 Difference]: With dead ends: 334 [2023-11-29 07:00:57,130 INFO L226 Difference]: Without dead ends: 332 [2023-11-29 07:00:57,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:00:57,131 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 106 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:00:57,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 388 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:00:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-29 07:00:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 299. [2023-11-29 07:00:57,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 201 states have (on average 1.1194029850746268) internal successors, (225), 203 states have internal predecessors, (225), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 07:00:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 371 transitions. [2023-11-29 07:00:57,215 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 371 transitions. Word has length 162 [2023-11-29 07:00:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:00:57,216 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 371 transitions. [2023-11-29 07:00:57,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 07:00:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 371 transitions. [2023-11-29 07:00:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 07:00:57,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:00:57,217 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:57,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 07:00:57,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 07:00:57,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:00:57,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1305677314, now seen corresponding path program 1 times [2023-11-29 07:00:57,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:57,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421834610] [2023-11-29 07:00:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:57,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:57,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:00:57,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526555045] [2023-11-29 07:00:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:57,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:00:57,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:00:57,434 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:00:57,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_639a798f-e592-484c-b1ce-880f4549335c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 07:00:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:57,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 07:00:57,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:02:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 537 proven. 117 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-11-29 07:02:36,184 INFO L327 TraceCheckSpWp]: Computing backward predicates...