./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/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_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/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_2e24fcbf-b70e-41f7-97bd-256f22dc9372/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 a25157c7fbfaaeb445ae25173072ac685508ae68c0f4a311ca47f4d853fae71f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:14:18,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:14:18,764 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:14:18,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:14:18,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:14:18,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:14:18,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:14:18,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:14:18,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:14:18,795 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:14:18,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:14:18,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:14:18,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:14:18,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:14:18,798 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:14:18,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:14:18,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:14:18,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:14:18,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:14:18,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:14:18,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:14:18,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:14:18,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:14:18,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:14:18,803 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:14:18,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:14:18,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:14:18,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:14:18,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:14:18,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:14:18,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:14:18,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:14:18,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:14:18,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:14:18,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:14:18,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:14:18,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:14:18,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:14:18,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:14:18,807 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:14:18,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:14:18,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:14:18,808 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_2e24fcbf-b70e-41f7-97bd-256f22dc9372/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a25157c7fbfaaeb445ae25173072ac685508ae68c0f4a311ca47f4d853fae71f [2023-11-29 00:14:19,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:14:19,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:14:19,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:14:19,041 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:14:19,041 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:14:19,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-64.i [2023-11-29 00:14:21,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:14:22,094 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:14:22,094 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-64.i [2023-11-29 00:14:22,110 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/data/cfab65ad3/fa5c4fed1df14df0b1f4d56461111431/FLAG816dbf72d [2023-11-29 00:14:22,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/data/cfab65ad3/fa5c4fed1df14df0b1f4d56461111431 [2023-11-29 00:14:22,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:14:22,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:14:22,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:14:22,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:14:22,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:14:22,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da3f826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22, skipping insertion in model container [2023-11-29 00:14:22,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,179 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:14:22,318 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_2e24fcbf-b70e-41f7-97bd-256f22dc9372/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-64.i[916,929] [2023-11-29 00:14:22,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:14:22,513 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:14:22,526 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_2e24fcbf-b70e-41f7-97bd-256f22dc9372/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-64.i[916,929] [2023-11-29 00:14:22,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:14:22,629 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:14:22,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22 WrapperNode [2023-11-29 00:14:22,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:14:22,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:14:22,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:14:22,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:14:22,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,775 INFO L138 Inliner]: procedures = 26, calls = 116, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 807 [2023-11-29 00:14:22,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:14:22,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:14:22,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:14:22,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:14:22,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,849 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 00:14:22,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:14:22,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:14:22,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:14:22,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:14:22,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (1/1) ... [2023-11-29 00:14:22,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:14:22,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:22,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:14:22,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:14:22,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:14:22,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:14:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:14:22,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:14:22,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:14:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:14:23,117 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:14:23,120 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:14:24,041 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:14:24,098 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:14:24,098 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:14:24,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:24 BoogieIcfgContainer [2023-11-29 00:14:24,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:14:24,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:14:24,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:14:24,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:14:24,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:14:22" (1/3) ... [2023-11-29 00:14:24,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a78d8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:14:24, skipping insertion in model container [2023-11-29 00:14:24,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:22" (2/3) ... [2023-11-29 00:14:24,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a78d8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:14:24, skipping insertion in model container [2023-11-29 00:14:24,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:24" (3/3) ... [2023-11-29 00:14:24,107 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-64.i [2023-11-29 00:14:24,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:14:24,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:14:24,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:14:24,187 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;@709f25e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:14:24,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:14:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 203 states have (on average 1.6600985221674878) internal successors, (337), 204 states have internal predecessors, (337), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 00:14:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-11-29 00:14:24,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:24,237 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:24,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:24,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash -100737327, now seen corresponding path program 1 times [2023-11-29 00:14:24,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:24,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44863461] [2023-11-29 00:14:24,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:24,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:24,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:24,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315466107] [2023-11-29 00:14:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:24,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:24,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:24,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:24,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:14:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:24,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 1489 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:14:25,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:25,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44863461] [2023-11-29 00:14:25,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315466107] [2023-11-29 00:14:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315466107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:25,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:25,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:14:25,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607717317] [2023-11-29 00:14:25,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:25,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:14:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:14:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:14:25,151 INFO L87 Difference]: Start difference. First operand has 309 states, 203 states have (on average 1.6600985221674878) internal successors, (337), 204 states have internal predecessors, (337), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:25,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:25,246 INFO L93 Difference]: Finished difference Result 615 states and 1187 transitions. [2023-11-29 00:14:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:14:25,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 654 [2023-11-29 00:14:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:25,266 INFO L225 Difference]: With dead ends: 615 [2023-11-29 00:14:25,266 INFO L226 Difference]: Without dead ends: 307 [2023-11-29 00:14:25,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 653 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 00:14:25,277 INFO L413 NwaCegarLoop]: 533 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, 533 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 00:14:25,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-29 00:14:25,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-11-29 00:14:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 202 states have (on average 1.6336633663366336) internal successors, (330), 202 states have internal predecessors, (330), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 00:14:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 536 transitions. [2023-11-29 00:14:25,379 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 536 transitions. Word has length 654 [2023-11-29 00:14:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:25,383 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 536 transitions. [2023-11-29 00:14:25,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 536 transitions. [2023-11-29 00:14:25,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 00:14:25,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:25,412 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:25,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:25,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 00:14:25,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:25,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1644685128, now seen corresponding path program 1 times [2023-11-29 00:14:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:25,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755617054] [2023-11-29 00:14:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:25,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:25,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305900907] [2023-11-29 00:14:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:25,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:25,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:25,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:25,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:14:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:26,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:14:26,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:30,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:30,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755617054] [2023-11-29 00:14:30,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:30,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305900907] [2023-11-29 00:14:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305900907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:30,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:30,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:14:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020387941] [2023-11-29 00:14:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:30,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:14:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:30,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:14:30,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:14:30,684 INFO L87 Difference]: Start difference. First operand 307 states and 536 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:31,308 INFO L93 Difference]: Finished difference Result 1211 states and 2114 transitions. [2023-11-29 00:14:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:31,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 00:14:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:31,321 INFO L225 Difference]: With dead ends: 1211 [2023-11-29 00:14:31,321 INFO L226 Difference]: Without dead ends: 905 [2023-11-29 00:14:31,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:31,325 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 1054 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:31,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 2882 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:14:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-11-29 00:14:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 311. [2023-11-29 00:14:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 206 states have (on average 1.6310679611650485) internal successors, (336), 206 states have internal predecessors, (336), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 00:14:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 542 transitions. [2023-11-29 00:14:31,407 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 542 transitions. Word has length 657 [2023-11-29 00:14:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:31,410 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 542 transitions. [2023-11-29 00:14:31,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 542 transitions. [2023-11-29 00:14:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 00:14:31,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:31,418 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:31,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:14:31,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:31,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:31,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash 130322234, now seen corresponding path program 1 times [2023-11-29 00:14:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170125322] [2023-11-29 00:14:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:31,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255719247] [2023-11-29 00:14:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:31,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:31,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:31,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:14:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:32,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:14:32,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:33,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:33,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:33,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170125322] [2023-11-29 00:14:33,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:33,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255719247] [2023-11-29 00:14:33,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255719247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:33,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:33,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:14:33,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439610533] [2023-11-29 00:14:33,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:33,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:14:33,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:14:33,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:14:33,548 INFO L87 Difference]: Start difference. First operand 311 states and 542 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:34,074 INFO L93 Difference]: Finished difference Result 1215 states and 2119 transitions. [2023-11-29 00:14:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:34,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 00:14:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:34,084 INFO L225 Difference]: With dead ends: 1215 [2023-11-29 00:14:34,084 INFO L226 Difference]: Without dead ends: 905 [2023-11-29 00:14:34,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:34,091 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 1042 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:34,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 2907 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:14:34,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-11-29 00:14:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 311. [2023-11-29 00:14:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 206 states have (on average 1.6310679611650485) internal successors, (336), 206 states have internal predecessors, (336), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 00:14:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 542 transitions. [2023-11-29 00:14:34,158 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 542 transitions. Word has length 657 [2023-11-29 00:14:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:34,161 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 542 transitions. [2023-11-29 00:14:34,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 542 transitions. [2023-11-29 00:14:34,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 00:14:34,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:34,169 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:34,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:14:34,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:34,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:34,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:34,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1212360776, now seen corresponding path program 1 times [2023-11-29 00:14:34,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:34,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339651096] [2023-11-29 00:14:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:34,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:34,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071952399] [2023-11-29 00:14:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:34,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:34,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:34,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:34,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:14:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:34,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:14:34,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:38,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:38,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:38,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339651096] [2023-11-29 00:14:38,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:38,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071952399] [2023-11-29 00:14:38,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071952399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:38,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:38,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:14:38,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130239359] [2023-11-29 00:14:38,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:38,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:14:38,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:38,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:14:38,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:14:38,893 INFO L87 Difference]: Start difference. First operand 311 states and 542 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:39,606 INFO L93 Difference]: Finished difference Result 1215 states and 2119 transitions. [2023-11-29 00:14:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:39,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 00:14:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:39,616 INFO L225 Difference]: With dead ends: 1215 [2023-11-29 00:14:39,616 INFO L226 Difference]: Without dead ends: 905 [2023-11-29 00:14:39,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:39,619 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 1041 mSDsluCounter, 2872 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 4418 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:39,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 4418 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:14:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-11-29 00:14:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 311. [2023-11-29 00:14:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 206 states have (on average 1.6310679611650485) internal successors, (336), 206 states have internal predecessors, (336), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 00:14:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 542 transitions. [2023-11-29 00:14:39,678 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 542 transitions. Word has length 657 [2023-11-29 00:14:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:39,680 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 542 transitions. [2023-11-29 00:14:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 542 transitions. [2023-11-29 00:14:39,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 00:14:39,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:39,688 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:39,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:14:39,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:39,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:39,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash 562646586, now seen corresponding path program 1 times [2023-11-29 00:14:39,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:39,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474212543] [2023-11-29 00:14:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:39,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:39,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:39,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48385200] [2023-11-29 00:14:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:39,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:39,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:39,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:14:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:40,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:14:40,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:41,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:41,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474212543] [2023-11-29 00:14:41,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48385200] [2023-11-29 00:14:41,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48385200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:41,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:41,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:14:41,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307373015] [2023-11-29 00:14:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:41,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:14:41,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:41,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:14:41,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:14:41,689 INFO L87 Difference]: Start difference. First operand 311 states and 542 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:42,138 INFO L93 Difference]: Finished difference Result 930 states and 1616 transitions. [2023-11-29 00:14:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 00:14:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:42,146 INFO L225 Difference]: With dead ends: 930 [2023-11-29 00:14:42,146 INFO L226 Difference]: Without dead ends: 620 [2023-11-29 00:14:42,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:42,149 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 538 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:42,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 3464 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:14:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-11-29 00:14:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 307. [2023-11-29 00:14:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 202 states have (on average 1.6287128712871286) internal successors, (329), 202 states have internal predecessors, (329), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 00:14:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 535 transitions. [2023-11-29 00:14:42,192 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 535 transitions. Word has length 657 [2023-11-29 00:14:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:42,194 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 535 transitions. [2023-11-29 00:14:42,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 535 transitions. [2023-11-29 00:14:42,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 00:14:42,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:42,202 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:42,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:14:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:42,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:42,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash -476538049, now seen corresponding path program 1 times [2023-11-29 00:14:42,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:42,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538103636] [2023-11-29 00:14:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:42,484 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:42,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779916879] [2023-11-29 00:14:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:42,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:42,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:42,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:42,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:14:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:42,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:14:42,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:42,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:42,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:42,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538103636] [2023-11-29 00:14:42,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:42,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779916879] [2023-11-29 00:14:42,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779916879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:42,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:42,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700401782] [2023-11-29 00:14:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:42,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:14:42,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:42,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:14:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:14:42,923 INFO L87 Difference]: Start difference. First operand 307 states and 535 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:42,979 INFO L93 Difference]: Finished difference Result 916 states and 1598 transitions. [2023-11-29 00:14:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:14:42,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 659 [2023-11-29 00:14:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:42,985 INFO L225 Difference]: With dead ends: 916 [2023-11-29 00:14:42,985 INFO L226 Difference]: Without dead ends: 610 [2023-11-29 00:14:42,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 00:14:42,987 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 519 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:42,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1546 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-11-29 00:14:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 318. [2023-11-29 00:14:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 213 states have (on average 1.6338028169014085) internal successors, (348), 213 states have internal predecessors, (348), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 00:14:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 554 transitions. [2023-11-29 00:14:43,022 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 554 transitions. Word has length 659 [2023-11-29 00:14:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:43,024 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 554 transitions. [2023-11-29 00:14:43,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 554 transitions. [2023-11-29 00:14:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 00:14:43,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:43,028 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:43,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:43,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:43,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:43,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash -478385091, now seen corresponding path program 1 times [2023-11-29 00:14:43,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:43,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375746597] [2023-11-29 00:14:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:43,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:43,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:43,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815819987] [2023-11-29 00:14:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:43,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:43,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:43,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:43,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:14:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:43,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:14:43,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:44,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:44,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:44,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375746597] [2023-11-29 00:14:44,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:44,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815819987] [2023-11-29 00:14:44,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815819987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:44,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:44,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:14:44,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987784386] [2023-11-29 00:14:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:44,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:14:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:44,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:14:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:14:44,424 INFO L87 Difference]: Start difference. First operand 318 states and 554 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:44,470 INFO L93 Difference]: Finished difference Result 952 states and 1660 transitions. [2023-11-29 00:14:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:14:44,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 659 [2023-11-29 00:14:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:44,476 INFO L225 Difference]: With dead ends: 952 [2023-11-29 00:14:44,477 INFO L226 Difference]: Without dead ends: 635 [2023-11-29 00:14:44,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 00:14:44,479 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 231 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:44,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1060 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-11-29 00:14:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2023-11-29 00:14:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 424 states have (on average 1.634433962264151) internal successors, (693), 424 states have internal predecessors, (693), 206 states have call successors, (206), 2 states have call predecessors, (206), 2 states have return successors, (206), 206 states have call predecessors, (206), 206 states have call successors, (206) [2023-11-29 00:14:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1105 transitions. [2023-11-29 00:14:44,563 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1105 transitions. Word has length 659 [2023-11-29 00:14:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:44,564 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 1105 transitions. [2023-11-29 00:14:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1105 transitions. [2023-11-29 00:14:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 00:14:44,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:44,569 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:44,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:44,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:44,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:44,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1550201019, now seen corresponding path program 1 times [2023-11-29 00:14:44,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:44,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057866980] [2023-11-29 00:14:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:44,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24842814] [2023-11-29 00:14:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:44,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:44,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:44,833 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:44,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:14:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:45,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:14:45,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:45,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:45,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:45,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057866980] [2023-11-29 00:14:45,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:45,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24842814] [2023-11-29 00:14:45,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24842814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:45,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:45,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967376483] [2023-11-29 00:14:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:45,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:14:45,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:14:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:14:45,220 INFO L87 Difference]: Start difference. First operand 633 states and 1105 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:45,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:45,303 INFO L93 Difference]: Finished difference Result 1725 states and 3017 transitions. [2023-11-29 00:14:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:14:45,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 659 [2023-11-29 00:14:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:45,313 INFO L225 Difference]: With dead ends: 1725 [2023-11-29 00:14:45,313 INFO L226 Difference]: Without dead ends: 1093 [2023-11-29 00:14:45,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 00:14:45,317 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 379 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:45,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1088 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:45,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-11-29 00:14:45,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1089. [2023-11-29 00:14:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 764 states have (on average 1.6518324607329844) internal successors, (1262), 766 states have internal predecessors, (1262), 320 states have call successors, (320), 4 states have call predecessors, (320), 4 states have return successors, (320), 318 states have call predecessors, (320), 320 states have call successors, (320) [2023-11-29 00:14:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1902 transitions. [2023-11-29 00:14:45,470 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1902 transitions. Word has length 659 [2023-11-29 00:14:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:45,471 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1902 transitions. [2023-11-29 00:14:45,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1902 transitions. [2023-11-29 00:14:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 00:14:45,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:45,479 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:45,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:45,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:45,679 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:45,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1568275913, now seen corresponding path program 1 times [2023-11-29 00:14:45,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:45,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486526185] [2023-11-29 00:14:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:45,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:45,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:45,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186259852] [2023-11-29 00:14:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:45,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:45,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:45,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:14:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:46,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:14:46,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:46,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:46,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486526185] [2023-11-29 00:14:46,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186259852] [2023-11-29 00:14:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186259852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:46,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:46,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:46,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931590077] [2023-11-29 00:14:46,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:46,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:14:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:14:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:14:46,195 INFO L87 Difference]: Start difference. First operand 1089 states and 1902 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:46,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:46,298 INFO L93 Difference]: Finished difference Result 3011 states and 5234 transitions. [2023-11-29 00:14:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:14:46,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 659 [2023-11-29 00:14:46,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:46,318 INFO L225 Difference]: With dead ends: 3011 [2023-11-29 00:14:46,318 INFO L226 Difference]: Without dead ends: 1923 [2023-11-29 00:14:46,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 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 00:14:46,324 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 358 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:46,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1294 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:46,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2023-11-29 00:14:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1919. [2023-11-29 00:14:46,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1286 states have (on average 1.6158631415241058) internal successors, (2078), 1292 states have internal predecessors, (2078), 624 states have call successors, (624), 8 states have call predecessors, (624), 8 states have return successors, (624), 618 states have call predecessors, (624), 624 states have call successors, (624) [2023-11-29 00:14:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3326 transitions. [2023-11-29 00:14:46,571 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3326 transitions. Word has length 659 [2023-11-29 00:14:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:46,572 INFO L495 AbstractCegarLoop]: Abstraction has 1919 states and 3326 transitions. [2023-11-29 00:14:46,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3326 transitions. [2023-11-29 00:14:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 00:14:46,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:46,579 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:46,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:46,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 00:14:46,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:46,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1990977739, now seen corresponding path program 1 times [2023-11-29 00:14:46,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:46,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157351230] [2023-11-29 00:14:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:46,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:46,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433294296] [2023-11-29 00:14:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:46,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:46,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:46,912 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:46,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:14:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:47,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:14:47,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:47,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:47,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157351230] [2023-11-29 00:14:47,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433294296] [2023-11-29 00:14:47,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433294296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:47,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:47,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:14:47,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779565518] [2023-11-29 00:14:47,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:47,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:14:47,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:47,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:14:47,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:14:47,588 INFO L87 Difference]: Start difference. First operand 1919 states and 3326 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:51,247 INFO L93 Difference]: Finished difference Result 10264 states and 17564 transitions. [2023-11-29 00:14:51,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:14:51,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 659 [2023-11-29 00:14:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:51,299 INFO L225 Difference]: With dead ends: 10264 [2023-11-29 00:14:51,299 INFO L226 Difference]: Without dead ends: 8346 [2023-11-29 00:14:51,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:14:51,307 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 2443 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 1815 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1815 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:51,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2443 Valid, 2399 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1815 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 00:14:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8346 states. [2023-11-29 00:14:52,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8346 to 3215. [2023-11-29 00:14:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3215 states, 2487 states have (on average 1.7285886610373944) internal successors, (4299), 2494 states have internal predecessors, (4299), 713 states have call successors, (713), 14 states have call predecessors, (713), 14 states have return successors, (713), 706 states have call predecessors, (713), 713 states have call successors, (713) [2023-11-29 00:14:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5725 transitions. [2023-11-29 00:14:52,375 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5725 transitions. Word has length 659 [2023-11-29 00:14:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:52,376 INFO L495 AbstractCegarLoop]: Abstraction has 3215 states and 5725 transitions. [2023-11-29 00:14:52,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5725 transitions. [2023-11-29 00:14:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 00:14:52,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:52,387 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:52,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:14:52,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:14:52,588 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:52,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1850429129, now seen corresponding path program 1 times [2023-11-29 00:14:52,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:52,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438405411] [2023-11-29 00:14:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:52,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:52,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:52,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315308112] [2023-11-29 00:14:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:52,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:52,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:52,649 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:52,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:14:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:53,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:14:53,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 00:14:53,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:53,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438405411] [2023-11-29 00:14:53,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315308112] [2023-11-29 00:14:53,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315308112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:53,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:53,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:14:53,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749294994] [2023-11-29 00:14:53,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:53,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:14:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:14:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:14:53,797 INFO L87 Difference]: Start difference. First operand 3215 states and 5725 transitions. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:55,906 INFO L93 Difference]: Finished difference Result 9793 states and 17239 transitions. [2023-11-29 00:14:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:55,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 659 [2023-11-29 00:14:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:55,949 INFO L225 Difference]: With dead ends: 9793 [2023-11-29 00:14:55,949 INFO L226 Difference]: Without dead ends: 6723 [2023-11-29 00:14:55,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:14:55,958 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 1321 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:55,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 2025 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:14:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6723 states. [2023-11-29 00:14:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6723 to 5061. [2023-11-29 00:14:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5061 states, 4016 states have (on average 1.7430278884462151) internal successors, (7000), 4024 states have internal predecessors, (7000), 1020 states have call successors, (1020), 24 states have call predecessors, (1020), 24 states have return successors, (1020), 1012 states have call predecessors, (1020), 1020 states have call successors, (1020) [2023-11-29 00:14:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 9040 transitions. [2023-11-29 00:14:56,515 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 9040 transitions. Word has length 659 [2023-11-29 00:14:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:56,516 INFO L495 AbstractCegarLoop]: Abstraction has 5061 states and 9040 transitions. [2023-11-29 00:14:56,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 00:14:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 9040 transitions. [2023-11-29 00:14:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 00:14:56,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:56,526 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:56,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:14:56,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:56,727 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:56,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:56,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1631574411, now seen corresponding path program 1 times [2023-11-29 00:14:56,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:56,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106442863] [2023-11-29 00:14:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:56,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:56,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:56,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133186063] [2023-11-29 00:14:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:56,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:56,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:56,798 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:56,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24fcbf-b70e-41f7-97bd-256f22dc9372/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:14:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:57,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 00:14:57,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:48,384 WARN L293 SmtUtils]: Spent 6.23s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)