./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-80.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-80.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl --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 331df49ab4a0447b27b0a585123d8827689038cde32f4bb2dec4383418b91892 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:28:40,641 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:28:40,751 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:28:40,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:28:40,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:28:40,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:28:40,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:28:40,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:28:40,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:28:40,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:28:40,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:28:40,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:28:40,831 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:28:40,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:28:40,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:28:40,837 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:28:40,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:28:40,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:28:40,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:28:40,849 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:28:40,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:28:40,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:28:40,851 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:28:40,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:28:40,853 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:28:40,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:28:40,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:28:40,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:28:40,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:40,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:28:40,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:28:40,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:28:40,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:28:40,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:28:40,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:28:40,858 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:28:40,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:28:40,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:28:40,859 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:28:40,859 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_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 331df49ab4a0447b27b0a585123d8827689038cde32f4bb2dec4383418b91892 [2023-11-12 02:28:41,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:28:41,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:28:41,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:28:41,232 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:28:41,232 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:28:41,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-80.i [2023-11-12 02:28:44,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:44,680 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:44,680 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-80.i [2023-11-12 02:28:44,709 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/data/756892b96/0a94021d22d14f379e55dade52e47ec4/FLAGc6c09db9c [2023-11-12 02:28:44,733 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/data/756892b96/0a94021d22d14f379e55dade52e47ec4 [2023-11-12 02:28:44,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:44,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:44,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:44,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:44,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:44,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:44" (1/1) ... [2023-11-12 02:28:44,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d2535b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:44, skipping insertion in model container [2023-11-12 02:28:44,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:44" (1/1) ... [2023-11-12 02:28:44,807 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:44,979 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_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-80.i[916,929] [2023-11-12 02:28:45,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:45,281 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:45,294 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_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-80.i[916,929] [2023-11-12 02:28:45,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:45,475 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:45,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45 WrapperNode [2023-11-12 02:28:45,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:45,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:45,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:45,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:45,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,645 INFO L138 Inliner]: procedures = 26, calls = 97, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 772 [2023-11-12 02:28:45,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:45,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:45,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:45,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:45,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:45,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:45,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:45,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:45,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (1/1) ... [2023-11-12 02:28:45,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:45,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:45,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:45,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:28:45,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:28:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:45,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:46,081 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:46,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:47,334 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:47,353 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:47,353 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:28:47,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:47 BoogieIcfgContainer [2023-11-12 02:28:47,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:47,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:28:47,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:28:47,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:28:47,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:28:44" (1/3) ... [2023-11-12 02:28:47,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33585793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:47, skipping insertion in model container [2023-11-12 02:28:47,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:45" (2/3) ... [2023-11-12 02:28:47,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33585793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:47, skipping insertion in model container [2023-11-12 02:28:47,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:47" (3/3) ... [2023-11-12 02:28:47,371 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-80.i [2023-11-12 02:28:47,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:28:47,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:28:47,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:28:47,476 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;@563d5ee0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:28:47,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:28:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 293 states, 206 states have (on average 1.6601941747572815) internal successors, (342), 207 states have internal predecessors, (342), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-12 02:28:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2023-11-12 02:28:47,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:47,536 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:47,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:47,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1812837814, now seen corresponding path program 1 times [2023-11-12 02:28:47,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853045260] [2023-11-12 02:28:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:47,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:48,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853045260] [2023-11-12 02:28:48,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:28:48,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082582985] [2023-11-12 02:28:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:48,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:48,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:48,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:48,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:28:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:48,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:28:48,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2023-11-12 02:28:48,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082582985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:48,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:48,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:48,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794195522] [2023-11-12 02:28:48,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:28:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:28:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:28:48,832 INFO L87 Difference]: Start difference. First operand has 293 states, 206 states have (on average 1.6601941747572815) internal successors, (342), 207 states have internal predecessors, (342), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) [2023-11-12 02:28:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:48,901 INFO L93 Difference]: Finished difference Result 579 states and 1098 transitions. [2023-11-12 02:28:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:28:48,903 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) Word has length 568 [2023-11-12 02:28:48,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:48,916 INFO L225 Difference]: With dead ends: 579 [2023-11-12 02:28:48,916 INFO L226 Difference]: Without dead ends: 289 [2023-11-12 02:28:48,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:28:48,927 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:48,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-12 02:28:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-12 02:28:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 203 states have (on average 1.6305418719211822) internal successors, (331), 203 states have internal predecessors, (331), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-12 02:28:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 499 transitions. [2023-11-12 02:28:49,023 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 499 transitions. Word has length 568 [2023-11-12 02:28:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:49,027 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 499 transitions. [2023-11-12 02:28:49,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) [2023-11-12 02:28:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 499 transitions. [2023-11-12 02:28:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:28:49,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:49,050 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:49,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:28:49,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:28:49,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:49,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 987138314, now seen corresponding path program 1 times [2023-11-12 02:28:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:49,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200144560] [2023-11-12 02:28:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:49,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:28:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37604226] [2023-11-12 02:28:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:49,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:49,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:49,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:49,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:28:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:49,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:28:49,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:28:50,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:50,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200144560] [2023-11-12 02:28:50,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:28:50,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37604226] [2023-11-12 02:28:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37604226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:50,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:50,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601533984] [2023-11-12 02:28:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:50,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:50,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:50,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:50,075 INFO L87 Difference]: Start difference. First operand 289 states and 499 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:50,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:50,238 INFO L93 Difference]: Finished difference Result 859 states and 1487 transitions. [2023-11-12 02:28:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:50,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:28:50,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:50,248 INFO L225 Difference]: With dead ends: 859 [2023-11-12 02:28:50,248 INFO L226 Difference]: Without dead ends: 573 [2023-11-12 02:28:50,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:50,251 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 478 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:50,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1217 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:28:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-11-12 02:28:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 397. [2023-11-12 02:28:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 311 states have (on average 1.720257234726688) internal successors, (535), 311 states have internal predecessors, (535), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-12 02:28:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 703 transitions. [2023-11-12 02:28:50,310 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 703 transitions. Word has length 569 [2023-11-12 02:28:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:50,313 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 703 transitions. [2023-11-12 02:28:50,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:50,314 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 703 transitions. [2023-11-12 02:28:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:28:50,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:50,324 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:50,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:50,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:50,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:50,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1090198584, now seen corresponding path program 1 times [2023-11-12 02:28:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:50,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45813493] [2023-11-12 02:28:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:50,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:50,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:28:50,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458241382] [2023-11-12 02:28:50,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:50,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:50,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:50,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:50,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:28:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:51,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:28:51,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:28:51,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:51,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45813493] [2023-11-12 02:28:51,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:28:51,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458241382] [2023-11-12 02:28:51,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458241382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:51,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:51,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:51,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461673247] [2023-11-12 02:28:51,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:51,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:51,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:51,282 INFO L87 Difference]: Start difference. First operand 397 states and 703 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:51,357 INFO L93 Difference]: Finished difference Result 1080 states and 1927 transitions. [2023-11-12 02:28:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:51,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:28:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:51,366 INFO L225 Difference]: With dead ends: 1080 [2023-11-12 02:28:51,366 INFO L226 Difference]: Without dead ends: 686 [2023-11-12 02:28:51,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:51,371 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 310 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:51,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 974 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-11-12 02:28:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 683. [2023-11-12 02:28:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 567 states have (on average 1.7513227513227514) internal successors, (993), 568 states have internal predecessors, (993), 113 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-12 02:28:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1219 transitions. [2023-11-12 02:28:51,461 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1219 transitions. Word has length 569 [2023-11-12 02:28:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:51,466 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1219 transitions. [2023-11-12 02:28:51,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:51,467 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1219 transitions. [2023-11-12 02:28:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:28:51,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:51,476 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:51,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:51,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:51,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:51,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:51,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2069877285, now seen corresponding path program 1 times [2023-11-12 02:28:51,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:51,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568564636] [2023-11-12 02:28:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:51,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:51,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:28:51,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340697822] [2023-11-12 02:28:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:51,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:51,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:51,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:51,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:28:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:52,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:28:52,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:28:52,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:52,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:52,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568564636] [2023-11-12 02:28:52,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:28:52,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340697822] [2023-11-12 02:28:52,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340697822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:52,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:52,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:52,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979210873] [2023-11-12 02:28:52,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:52,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:52,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:52,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:52,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:52,371 INFO L87 Difference]: Start difference. First operand 683 states and 1219 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:52,454 INFO L93 Difference]: Finished difference Result 1885 states and 3366 transitions. [2023-11-12 02:28:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:52,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:28:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:52,465 INFO L225 Difference]: With dead ends: 1885 [2023-11-12 02:28:52,465 INFO L226 Difference]: Without dead ends: 1205 [2023-11-12 02:28:52,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:52,468 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 346 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:52,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1228 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-11-12 02:28:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1202. [2023-11-12 02:28:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1002 states have (on average 1.7345309381237526) internal successors, (1738), 1005 states have internal predecessors, (1738), 195 states have call successors, (195), 4 states have call predecessors, (195), 4 states have return successors, (195), 192 states have call predecessors, (195), 195 states have call successors, (195) [2023-11-12 02:28:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 2128 transitions. [2023-11-12 02:28:52,596 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 2128 transitions. Word has length 569 [2023-11-12 02:28:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:52,598 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 2128 transitions. [2023-11-12 02:28:52,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 2128 transitions. [2023-11-12 02:28:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:28:52,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:52,609 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:52,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:52,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:52,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:52,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:52,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1493122585, now seen corresponding path program 1 times [2023-11-12 02:28:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:52,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626933128] [2023-11-12 02:28:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:52,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:52,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:28:52,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788579632] [2023-11-12 02:28:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:52,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:52,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:52,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:52,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:28:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:53,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:28:53,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:28:53,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:53,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:53,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626933128] [2023-11-12 02:28:53,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:28:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788579632] [2023-11-12 02:28:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788579632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:53,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:53,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:53,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880597596] [2023-11-12 02:28:53,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:53,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:53,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:53,552 INFO L87 Difference]: Start difference. First operand 1202 states and 2128 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:53,637 INFO L93 Difference]: Finished difference Result 2408 states and 4258 transitions. [2023-11-12 02:28:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:53,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:28:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:53,647 INFO L225 Difference]: With dead ends: 2408 [2023-11-12 02:28:53,647 INFO L226 Difference]: Without dead ends: 1209 [2023-11-12 02:28:53,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:53,651 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 292 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:53,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1015 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2023-11-12 02:28:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 995. [2023-11-12 02:28:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 878 states have (on average 1.765375854214123) internal successors, (1550), 879 states have internal predecessors, (1550), 113 states have call successors, (113), 3 states have call predecessors, (113), 3 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-12 02:28:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1776 transitions. [2023-11-12 02:28:53,757 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1776 transitions. Word has length 569 [2023-11-12 02:28:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:53,759 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1776 transitions. [2023-11-12 02:28:53,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1776 transitions. [2023-11-12 02:28:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:28:53,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:53,767 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:53,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:53,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:53,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:53,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:53,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1718512407, now seen corresponding path program 1 times [2023-11-12 02:28:53,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:53,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942319567] [2023-11-12 02:28:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:54,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:28:54,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297294973] [2023-11-12 02:28:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:54,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:54,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:54,084 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:54,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:28:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:54,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:28:54,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:28:54,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:54,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:54,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942319567] [2023-11-12 02:28:54,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:28:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297294973] [2023-11-12 02:28:54,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297294973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:54,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:54,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:54,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364976862] [2023-11-12 02:28:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:54,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:54,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:54,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:54,709 INFO L87 Difference]: Start difference. First operand 995 states and 1776 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:54,810 INFO L93 Difference]: Finished difference Result 2857 states and 5112 transitions. [2023-11-12 02:28:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:54,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:28:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:54,824 INFO L225 Difference]: With dead ends: 2857 [2023-11-12 02:28:54,824 INFO L226 Difference]: Without dead ends: 1865 [2023-11-12 02:28:54,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:54,828 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 296 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:54,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 977 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2023-11-12 02:28:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1862. [2023-11-12 02:28:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1677 states have (on average 1.763267740011926) internal successors, (2957), 1680 states have internal predecessors, (2957), 179 states have call successors, (179), 5 states have call predecessors, (179), 5 states have return successors, (179), 176 states have call predecessors, (179), 179 states have call successors, (179) [2023-11-12 02:28:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 3315 transitions. [2023-11-12 02:28:54,960 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 3315 transitions. Word has length 569 [2023-11-12 02:28:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:54,961 INFO L495 AbstractCegarLoop]: Abstraction has 1862 states and 3315 transitions. [2023-11-12 02:28:54,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 3315 transitions. [2023-11-12 02:28:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:28:54,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:54,971 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:54,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-12 02:28:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:28:55,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:55,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1153789549, now seen corresponding path program 1 times [2023-11-12 02:28:55,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:55,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123168261] [2023-11-12 02:28:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:55,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:28:55,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749362309] [2023-11-12 02:28:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:55,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:55,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:55,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:55,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:28:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:55,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:28:55,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:28:55,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:55,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:55,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123168261] [2023-11-12 02:28:55,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:28:55,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749362309] [2023-11-12 02:28:55,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749362309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:55,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:55,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:55,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107313420] [2023-11-12 02:28:55,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:55,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:55,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:55,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:55,844 INFO L87 Difference]: Start difference. First operand 1862 states and 3315 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:56,026 INFO L93 Difference]: Finished difference Result 4367 states and 7692 transitions. [2023-11-12 02:28:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:56,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:28:56,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:56,045 INFO L225 Difference]: With dead ends: 4367 [2023-11-12 02:28:56,045 INFO L226 Difference]: Without dead ends: 2508 [2023-11-12 02:28:56,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:56,051 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 223 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:56,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 983 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-11-12 02:28:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2505. [2023-11-12 02:28:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2162 states have (on average 1.7012025901942647) internal successors, (3678), 2169 states have internal predecessors, (3678), 332 states have call successors, (332), 10 states have call predecessors, (332), 10 states have return successors, (332), 325 states have call predecessors, (332), 332 states have call successors, (332) [2023-11-12 02:28:56,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4342 transitions. [2023-11-12 02:28:56,225 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4342 transitions. Word has length 569 [2023-11-12 02:28:56,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:56,226 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4342 transitions. [2023-11-12 02:28:56,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:56,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4342 transitions. [2023-11-12 02:28:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:28:56,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:56,236 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:56,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:56,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:28:56,444 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:56,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash 769438485, now seen corresponding path program 1 times [2023-11-12 02:28:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134754208] [2023-11-12 02:28:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:56,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:56,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:28:56,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237668996] [2023-11-12 02:28:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:56,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:56,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:56,532 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:56,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:28:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:57,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:28:57,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:28:57,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:57,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:57,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134754208] [2023-11-12 02:28:57,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:28:57,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237668996] [2023-11-12 02:28:57,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237668996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:57,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:57,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:57,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055861758] [2023-11-12 02:28:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:57,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:57,226 INFO L87 Difference]: Start difference. First operand 2505 states and 4342 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:57,463 INFO L93 Difference]: Finished difference Result 7265 states and 12576 transitions. [2023-11-12 02:28:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:28:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:57,496 INFO L225 Difference]: With dead ends: 7265 [2023-11-12 02:28:57,496 INFO L226 Difference]: Without dead ends: 4763 [2023-11-12 02:28:57,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:57,505 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 309 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:57,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1044 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2023-11-12 02:28:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 4759. [2023-11-12 02:28:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4759 states, 4116 states have (on average 1.6895043731778425) internal successors, (6954), 4131 states have internal predecessors, (6954), 624 states have call successors, (624), 18 states have call predecessors, (624), 18 states have return successors, (624), 609 states have call predecessors, (624), 624 states have call successors, (624) [2023-11-12 02:28:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 8202 transitions. [2023-11-12 02:28:57,912 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 8202 transitions. Word has length 569 [2023-11-12 02:28:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:57,914 INFO L495 AbstractCegarLoop]: Abstraction has 4759 states and 8202 transitions. [2023-11-12 02:28:57,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:28:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 8202 transitions. [2023-11-12 02:28:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:28:57,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:57,931 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:57,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:58,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:28:58,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:58,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1656661331, now seen corresponding path program 1 times [2023-11-12 02:28:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202886909] [2023-11-12 02:28:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:58,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:28:58,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657126214] [2023-11-12 02:28:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:58,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:58,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:58,243 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:58,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:28:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:58,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:28:58,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:29:00,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:00,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202886909] [2023-11-12 02:29:00,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:29:00,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657126214] [2023-11-12 02:29:00,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657126214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:00,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:00,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:00,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875811464] [2023-11-12 02:29:00,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:00,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:00,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:00,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:00,954 INFO L87 Difference]: Start difference. First operand 4759 states and 8202 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:01,892 INFO L93 Difference]: Finished difference Result 18867 states and 32511 transitions. [2023-11-12 02:29:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:01,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:29:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:01,977 INFO L225 Difference]: With dead ends: 18867 [2023-11-12 02:29:01,977 INFO L226 Difference]: Without dead ends: 14111 [2023-11-12 02:29:01,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:01,992 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 843 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:01,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1302 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:29:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14111 states. [2023-11-12 02:29:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14111 to 14091. [2023-11-12 02:29:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14091 states, 12164 states have (on average 1.6742847747451497) internal successors, (20366), 12209 states have internal predecessors, (20366), 1872 states have call successors, (1872), 54 states have call predecessors, (1872), 54 states have return successors, (1872), 1827 states have call predecessors, (1872), 1872 states have call successors, (1872) [2023-11-12 02:29:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14091 states to 14091 states and 24110 transitions. [2023-11-12 02:29:03,116 INFO L78 Accepts]: Start accepts. Automaton has 14091 states and 24110 transitions. Word has length 569 [2023-11-12 02:29:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:03,117 INFO L495 AbstractCegarLoop]: Abstraction has 14091 states and 24110 transitions. [2023-11-12 02:29:03,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 14091 states and 24110 transitions. [2023-11-12 02:29:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:29:03,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:03,142 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:03,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:03,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:03,351 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:03,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2049688341, now seen corresponding path program 1 times [2023-11-12 02:29:03,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:03,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477525151] [2023-11-12 02:29:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:03,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:03,439 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:29:03,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956272672] [2023-11-12 02:29:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:03,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:03,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:03,441 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:03,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:29:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:04,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:29:04,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:29:04,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:04,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477525151] [2023-11-12 02:29:04,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:29:04,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956272672] [2023-11-12 02:29:04,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956272672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:04,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:04,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606723936] [2023-11-12 02:29:04,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:04,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:04,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:04,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:04,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:04,090 INFO L87 Difference]: Start difference. First operand 14091 states and 24110 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:05,374 INFO L93 Difference]: Finished difference Result 32935 states and 56416 transitions. [2023-11-12 02:29:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:05,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:29:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:05,498 INFO L225 Difference]: With dead ends: 32935 [2023-11-12 02:29:05,498 INFO L226 Difference]: Without dead ends: 28179 [2023-11-12 02:29:05,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:05,514 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 510 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:05,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1500 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:29:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28179 states. [2023-11-12 02:29:06,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28179 to 14187. [2023-11-12 02:29:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14187 states, 12260 states have (on average 1.669004893964111) internal successors, (20462), 12305 states have internal predecessors, (20462), 1872 states have call successors, (1872), 54 states have call predecessors, (1872), 54 states have return successors, (1872), 1827 states have call predecessors, (1872), 1872 states have call successors, (1872) [2023-11-12 02:29:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14187 states to 14187 states and 24206 transitions. [2023-11-12 02:29:07,048 INFO L78 Accepts]: Start accepts. Automaton has 14187 states and 24206 transitions. Word has length 569 [2023-11-12 02:29:07,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:07,049 INFO L495 AbstractCegarLoop]: Abstraction has 14187 states and 24206 transitions. [2023-11-12 02:29:07,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 14187 states and 24206 transitions. [2023-11-12 02:29:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2023-11-12 02:29:07,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:07,069 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:07,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:07,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:07,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:07,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1987113517, now seen corresponding path program 1 times [2023-11-12 02:29:07,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:07,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423947739] [2023-11-12 02:29:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:07,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:07,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:29:07,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9144037] [2023-11-12 02:29:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:07,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:07,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:07,360 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:07,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:29:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:08,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:29:08,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:29:08,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:08,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:08,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423947739] [2023-11-12 02:29:08,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:29:08,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9144037] [2023-11-12 02:29:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9144037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:08,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:08,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591253099] [2023-11-12 02:29:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:08,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:08,068 INFO L87 Difference]: Start difference. First operand 14187 states and 24206 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:08,617 INFO L93 Difference]: Finished difference Result 23521 states and 40083 transitions. [2023-11-12 02:29:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 569 [2023-11-12 02:29:08,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:08,650 INFO L225 Difference]: With dead ends: 23521 [2023-11-12 02:29:08,650 INFO L226 Difference]: Without dead ends: 9337 [2023-11-12 02:29:08,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:08,684 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 13 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:08,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 966 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:29:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2023-11-12 02:29:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 9337. [2023-11-12 02:29:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9337 states, 8052 states have (on average 1.658221559860904) internal successors, (13352), 8082 states have internal predecessors, (13352), 1248 states have call successors, (1248), 36 states have call predecessors, (1248), 36 states have return successors, (1248), 1218 states have call predecessors, (1248), 1248 states have call successors, (1248) [2023-11-12 02:29:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9337 states to 9337 states and 15848 transitions. [2023-11-12 02:29:09,567 INFO L78 Accepts]: Start accepts. Automaton has 9337 states and 15848 transitions. Word has length 569 [2023-11-12 02:29:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:09,568 INFO L495 AbstractCegarLoop]: Abstraction has 9337 states and 15848 transitions. [2023-11-12 02:29:09,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9337 states and 15848 transitions. [2023-11-12 02:29:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-12 02:29:09,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:09,600 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:09,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:09,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:09,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:09,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:09,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1204415436, now seen corresponding path program 1 times [2023-11-12 02:29:09,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:09,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105289869] [2023-11-12 02:29:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:09,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:09,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:29:09,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022684932] [2023-11-12 02:29:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:09,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:09,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:09,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:09,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-12 02:29:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:10,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:29:10,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:29:10,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105289869] [2023-11-12 02:29:10,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:29:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022684932] [2023-11-12 02:29:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022684932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:10,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:10,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072360265] [2023-11-12 02:29:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:10,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:10,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:10,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:10,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:10,651 INFO L87 Difference]: Start difference. First operand 9337 states and 15848 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:11,817 INFO L93 Difference]: Finished difference Result 27809 states and 47252 transitions. [2023-11-12 02:29:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:29:11,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 571 [2023-11-12 02:29:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:11,874 INFO L225 Difference]: With dead ends: 27809 [2023-11-12 02:29:11,874 INFO L226 Difference]: Without dead ends: 18475 [2023-11-12 02:29:11,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:11,896 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 936 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:11,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 2945 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:29:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18475 states. [2023-11-12 02:29:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18475 to 7997. [2023-11-12 02:29:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7997 states, 7308 states have (on average 1.6978653530377668) internal successors, (12408), 7322 states have internal predecessors, (12408), 664 states have call successors, (664), 24 states have call predecessors, (664), 24 states have return successors, (664), 650 states have call predecessors, (664), 664 states have call successors, (664) [2023-11-12 02:29:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7997 states to 7997 states and 13736 transitions. [2023-11-12 02:29:12,757 INFO L78 Accepts]: Start accepts. Automaton has 7997 states and 13736 transitions. Word has length 571 [2023-11-12 02:29:12,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:12,759 INFO L495 AbstractCegarLoop]: Abstraction has 7997 states and 13736 transitions. [2023-11-12 02:29:12,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 7997 states and 13736 transitions. [2023-11-12 02:29:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-12 02:29:12,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:12,777 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:12,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:12,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:12,986 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:12,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1096407154, now seen corresponding path program 1 times [2023-11-12 02:29:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308689886] [2023-11-12 02:29:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:13,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:29:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385700012] [2023-11-12 02:29:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:13,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:13,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:13,061 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:13,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-12 02:29:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:13,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:29:13,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 7025 proven. 132 refuted. 0 times theorem prover too weak. 6787 trivial. 0 not checked. [2023-11-12 02:29:14,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:29:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 117 proven. 132 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-11-12 02:29:14,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:14,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308689886] [2023-11-12 02:29:14,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:29:14,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385700012] [2023-11-12 02:29:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385700012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:29:14,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:29:14,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-12 02:29:14,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988355022] [2023-11-12 02:29:14,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:29:14,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:29:14,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:14,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:29:14,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:29:14,725 INFO L87 Difference]: Start difference. First operand 7997 states and 13736 transitions. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 3 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2023-11-12 02:29:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:15,624 INFO L93 Difference]: Finished difference Result 16047 states and 27521 transitions. [2023-11-12 02:29:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:29:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 3 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) Word has length 571 [2023-11-12 02:29:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:15,644 INFO L225 Difference]: With dead ends: 16047 [2023-11-12 02:29:15,645 INFO L226 Difference]: Without dead ends: 8053 [2023-11-12 02:29:15,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 1134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:29:15,657 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 301 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:15,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 983 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:29:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8053 states. [2023-11-12 02:29:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8053 to 8013. [2023-11-12 02:29:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8013 states, 7320 states have (on average 1.6836065573770491) internal successors, (12324), 7334 states have internal predecessors, (12324), 664 states have call successors, (664), 28 states have call predecessors, (664), 28 states have return successors, (664), 650 states have call predecessors, (664), 664 states have call successors, (664) [2023-11-12 02:29:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8013 states to 8013 states and 13652 transitions. [2023-11-12 02:29:16,372 INFO L78 Accepts]: Start accepts. Automaton has 8013 states and 13652 transitions. Word has length 571 [2023-11-12 02:29:16,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:16,373 INFO L495 AbstractCegarLoop]: Abstraction has 8013 states and 13652 transitions. [2023-11-12 02:29:16,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 3 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2023-11-12 02:29:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 8013 states and 13652 transitions. [2023-11-12 02:29:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-11-12 02:29:16,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:16,397 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:16,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:16,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:16,606 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:16,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:16,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1702592887, now seen corresponding path program 1 times [2023-11-12 02:29:16,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648320249] [2023-11-12 02:29:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:16,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:16,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:29:16,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221686302] [2023-11-12 02:29:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:16,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:16,702 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:16,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-12 02:29:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:17,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:29:17,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 6713 proven. 96 refuted. 0 times theorem prover too weak. 7135 trivial. 0 not checked. [2023-11-12 02:29:17,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:29:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 153 proven. 96 refuted. 0 times theorem prover too weak. 13695 trivial. 0 not checked. [2023-11-12 02:29:18,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:18,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648320249] [2023-11-12 02:29:18,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:29:18,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221686302] [2023-11-12 02:29:18,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221686302] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:29:18,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:29:18,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-12 02:29:18,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787033179] [2023-11-12 02:29:18,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:29:18,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:29:18,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:18,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:29:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:29:18,251 INFO L87 Difference]: Start difference. First operand 8013 states and 13652 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2023-11-12 02:29:19,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:19,300 INFO L93 Difference]: Finished difference Result 13007 states and 21997 transitions. [2023-11-12 02:29:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:29:19,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 572 [2023-11-12 02:29:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:19,322 INFO L225 Difference]: With dead ends: 13007 [2023-11-12 02:29:19,323 INFO L226 Difference]: Without dead ends: 4997 [2023-11-12 02:29:19,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1136 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:29:19,335 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 610 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:19,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1025 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:29:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2023-11-12 02:29:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 4957. [2023-11-12 02:29:19,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4957 states, 4260 states have (on average 1.6328638497652581) internal successors, (6956), 4274 states have internal predecessors, (6956), 664 states have call successors, (664), 32 states have call predecessors, (664), 32 states have return successors, (664), 650 states have call predecessors, (664), 664 states have call successors, (664) [2023-11-12 02:29:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 8284 transitions. [2023-11-12 02:29:19,978 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 8284 transitions. Word has length 572 [2023-11-12 02:29:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:19,980 INFO L495 AbstractCegarLoop]: Abstraction has 4957 states and 8284 transitions. [2023-11-12 02:29:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2023-11-12 02:29:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 8284 transitions. [2023-11-12 02:29:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2023-11-12 02:29:19,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:19,998 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:20,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:20,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:29:20,208 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:20,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash 53903957, now seen corresponding path program 1 times [2023-11-12 02:29:20,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:20,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840302653] [2023-11-12 02:29:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:20,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:20,305 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:29:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710193581] [2023-11-12 02:29:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:20,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:20,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:20,307 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:20,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-12 02:29:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:21,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:29:21,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:29:21,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:21,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:21,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840302653] [2023-11-12 02:29:21,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:29:21,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710193581] [2023-11-12 02:29:21,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710193581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:21,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:21,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:21,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259528039] [2023-11-12 02:29:21,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:21,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:29:21,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:21,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:29:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:21,777 INFO L87 Difference]: Start difference. First operand 4957 states and 8284 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:23,111 INFO L93 Difference]: Finished difference Result 10740 states and 17791 transitions. [2023-11-12 02:29:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:29:23,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 573 [2023-11-12 02:29:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:23,130 INFO L225 Difference]: With dead ends: 10740 [2023-11-12 02:29:23,130 INFO L226 Difference]: Without dead ends: 5728 [2023-11-12 02:29:23,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:23,137 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1131 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:23,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 1579 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:29:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2023-11-12 02:29:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 5609. [2023-11-12 02:29:23,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5609 states, 4608 states have (on average 1.5837673611111112) internal successors, (7298), 4630 states have internal predecessors, (7298), 956 states have call successors, (956), 44 states have call predecessors, (956), 44 states have return successors, (956), 934 states have call predecessors, (956), 956 states have call successors, (956) [2023-11-12 02:29:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5609 states to 5609 states and 9210 transitions. [2023-11-12 02:29:23,750 INFO L78 Accepts]: Start accepts. Automaton has 5609 states and 9210 transitions. Word has length 573 [2023-11-12 02:29:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:23,751 INFO L495 AbstractCegarLoop]: Abstraction has 5609 states and 9210 transitions. [2023-11-12 02:29:23,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5609 states and 9210 transitions. [2023-11-12 02:29:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2023-11-12 02:29:23,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:23,762 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:23,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:23,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:23,971 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:23,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:23,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1219567979, now seen corresponding path program 1 times [2023-11-12 02:29:23,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:23,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033022431] [2023-11-12 02:29:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:23,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:24,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:29:24,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204882866] [2023-11-12 02:29:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:24,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:24,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:24,047 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:24,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-12 02:29:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:24,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:29:24,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-12 02:29:25,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:25,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:25,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033022431] [2023-11-12 02:29:25,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:29:25,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204882866] [2023-11-12 02:29:25,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204882866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:25,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:25,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:29:25,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742602942] [2023-11-12 02:29:25,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:25,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:29:25,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:25,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:29:25,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:29:25,603 INFO L87 Difference]: Start difference. First operand 5609 states and 9210 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:27,052 INFO L93 Difference]: Finished difference Result 14865 states and 24346 transitions. [2023-11-12 02:29:27,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:29:27,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 573 [2023-11-12 02:29:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:27,082 INFO L225 Difference]: With dead ends: 14865 [2023-11-12 02:29:27,082 INFO L226 Difference]: Without dead ends: 9259 [2023-11-12 02:29:27,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:29:27,097 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 909 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:27,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 2829 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:29:27,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9259 states. [2023-11-12 02:29:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9259 to 6217. [2023-11-12 02:29:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6217 states, 5216 states have (on average 1.6062116564417177) internal successors, (8378), 5238 states have internal predecessors, (8378), 956 states have call successors, (956), 44 states have call predecessors, (956), 44 states have return successors, (956), 934 states have call predecessors, (956), 956 states have call successors, (956) [2023-11-12 02:29:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 10290 transitions. [2023-11-12 02:29:27,954 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 10290 transitions. Word has length 573 [2023-11-12 02:29:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:27,954 INFO L495 AbstractCegarLoop]: Abstraction has 6217 states and 10290 transitions. [2023-11-12 02:29:27,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2023-11-12 02:29:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 10290 transitions. [2023-11-12 02:29:27,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2023-11-12 02:29:27,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:27,969 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:27,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:28,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:28,178 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:28,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:28,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1196935725, now seen corresponding path program 1 times [2023-11-12 02:29:28,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:28,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708031935] [2023-11-12 02:29:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:28,254 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:29:28,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432429530] [2023-11-12 02:29:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:28,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:28,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:28,256 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:28,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8edbbc4-49ba-47c5-a187-9e19d1f16de8/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process