./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.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_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/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_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/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_2214d85c-e025-466b-b6d8-235a00ccd41b/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 9e81824e0f45dbdd470142701a92808145120f6f10a0f56e3dfb7fa84d424e25 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:30,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:30,492 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:07:30,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:30,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:30,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:30,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:30,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:30,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:30,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:30,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:30,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:30,552 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:30,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:30,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:07:30,555 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:30,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:30,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:30,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:30,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:07:30,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:30,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:07:30,558 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:30,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:07:30,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:30,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:30,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:30,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:30,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:30,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:30,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:30,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:07:30,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:30,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:30,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:30,564 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:07:30,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:30,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:30,565 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:30,565 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_2214d85c-e025-466b-b6d8-235a00ccd41b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e81824e0f45dbdd470142701a92808145120f6f10a0f56e3dfb7fa84d424e25 [2023-11-12 02:07:30,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:30,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:30,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:30,851 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:30,852 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:30,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i [2023-11-12 02:07:33,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:34,248 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:34,249 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i [2023-11-12 02:07:34,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/data/db481882c/fab4c0c46ca4455a8b04393b48993c91/FLAGf755097f1 [2023-11-12 02:07:34,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/data/db481882c/fab4c0c46ca4455a8b04393b48993c91 [2023-11-12 02:07:34,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:34,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:34,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:34,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:34,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:34,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5a18d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34, skipping insertion in model container [2023-11-12 02:07:34,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,323 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:34,476 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_2214d85c-e025-466b-b6d8-235a00ccd41b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i[919,932] [2023-11-12 02:07:34,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:34,579 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:34,592 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_2214d85c-e025-466b-b6d8-235a00ccd41b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i[919,932] [2023-11-12 02:07:34,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:34,682 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:34,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34 WrapperNode [2023-11-12 02:07:34,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:34,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:34,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:34,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:34,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,799 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 280 [2023-11-12 02:07:34,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:34,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:34,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:34,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:34,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:34,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:34,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:34,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:34,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (1/1) ... [2023-11-12 02:07:34,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:34,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:34,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:34,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:07:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:07:34,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:07:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:07:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:07:35,087 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:07:35,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:35,701 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:35,709 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:35,709 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:07:35,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:35 BoogieIcfgContainer [2023-11-12 02:07:35,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:35,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:35,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:35,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:35,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:34" (1/3) ... [2023-11-12 02:07:35,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549a340e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:35, skipping insertion in model container [2023-11-12 02:07:35,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:34" (2/3) ... [2023-11-12 02:07:35,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549a340e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:35, skipping insertion in model container [2023-11-12 02:07:35,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:35" (3/3) ... [2023-11-12 02:07:35,729 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-92.i [2023-11-12 02:07:35,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:35,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:07:35,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:35,839 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;@6f28ac4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:35,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:07:35,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-12 02:07:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-12 02:07:35,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:35,891 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:35,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:35,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:35,898 INFO L85 PathProgramCache]: Analyzing trace with hash 17128314, now seen corresponding path program 1 times [2023-11-12 02:07:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:35,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614615768] [2023-11-12 02:07:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:36,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:36,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614615768] [2023-11-12 02:07:36,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:07:36,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673199990] [2023-11-12 02:07:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:36,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:36,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:36,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:07:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:36,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:07:36,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2023-11-12 02:07:36,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:36,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673199990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:36,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:36,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205975950] [2023-11-12 02:07:36,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:36,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:07:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:36,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:07:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:07:36,640 INFO L87 Difference]: Start difference. First operand has 115 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-12 02:07:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:36,682 INFO L93 Difference]: Finished difference Result 223 states and 405 transitions. [2023-11-12 02:07:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:07:36,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 256 [2023-11-12 02:07:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:36,694 INFO L225 Difference]: With dead ends: 223 [2023-11-12 02:07:36,694 INFO L226 Difference]: Without dead ends: 111 [2023-11-12 02:07:36,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 255 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 02:07:36,703 INFO L413 NwaCegarLoop]: 177 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, 177 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 02:07:36,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-12 02:07:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-12 02:07:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-12 02:07:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 177 transitions. [2023-11-12 02:07:36,767 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 177 transitions. Word has length 256 [2023-11-12 02:07:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:36,767 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 177 transitions. [2023-11-12 02:07:36,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2023-11-12 02:07:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 177 transitions. [2023-11-12 02:07:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-12 02:07:36,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:36,774 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:36,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:36,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:07:36,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:36,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1686909700, now seen corresponding path program 1 times [2023-11-12 02:07:36,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:36,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770888449] [2023-11-12 02:07:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:37,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:37,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581023831] [2023-11-12 02:07:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:37,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:37,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:37,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:37,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:07:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:37,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:07:37,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-12 02:07:37,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:37,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:37,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770888449] [2023-11-12 02:07:37,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:37,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581023831] [2023-11-12 02:07:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581023831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:37,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:37,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:37,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747957568] [2023-11-12 02:07:37,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:37,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:37,425 INFO L87 Difference]: Start difference. First operand 111 states and 177 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:37,462 INFO L93 Difference]: Finished difference Result 220 states and 353 transitions. [2023-11-12 02:07:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 256 [2023-11-12 02:07:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:37,476 INFO L225 Difference]: With dead ends: 220 [2023-11-12 02:07:37,476 INFO L226 Difference]: Without dead ends: 112 [2023-11-12 02:07:37,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 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 02:07:37,483 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:37,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-12 02:07:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-12 02:07:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-12 02:07:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 178 transitions. [2023-11-12 02:07:37,524 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 178 transitions. Word has length 256 [2023-11-12 02:07:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:37,527 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 178 transitions. [2023-11-12 02:07:37,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 178 transitions. [2023-11-12 02:07:37,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-12 02:07:37,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:37,533 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:37,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:07:37,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:37,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:37,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:37,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1264207874, now seen corresponding path program 1 times [2023-11-12 02:07:37,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:37,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445190077] [2023-11-12 02:07:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:37,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:37,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:37,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238784953] [2023-11-12 02:07:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:37,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:37,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:37,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:37,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:07:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:38,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:38,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-12 02:07:38,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:38,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:38,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445190077] [2023-11-12 02:07:38,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:38,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238784953] [2023-11-12 02:07:38,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238784953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:38,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:38,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:38,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377737494] [2023-11-12 02:07:38,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:38,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:38,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:38,615 INFO L87 Difference]: Start difference. First operand 112 states and 178 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:39,018 INFO L93 Difference]: Finished difference Result 456 states and 718 transitions. [2023-11-12 02:07:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:07:39,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 256 [2023-11-12 02:07:39,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:39,024 INFO L225 Difference]: With dead ends: 456 [2023-11-12 02:07:39,024 INFO L226 Difference]: Without dead ends: 347 [2023-11-12 02:07:39,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:07:39,027 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 277 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:39,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 805 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:07:39,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-12 02:07:39,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 326. [2023-11-12 02:07:39,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 191 states have (on average 1.324607329842932) internal successors, (253), 193 states have internal predecessors, (253), 128 states have call successors, (128), 6 states have call predecessors, (128), 6 states have return successors, (128), 126 states have call predecessors, (128), 128 states have call successors, (128) [2023-11-12 02:07:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 509 transitions. [2023-11-12 02:07:39,094 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 509 transitions. Word has length 256 [2023-11-12 02:07:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:39,096 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 509 transitions. [2023-11-12 02:07:39,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 509 transitions. [2023-11-12 02:07:39,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-12 02:07:39,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:39,121 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:39,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:39,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:39,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:39,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:39,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1525644002, now seen corresponding path program 1 times [2023-11-12 02:07:39,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:39,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136615737] [2023-11-12 02:07:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:39,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:39,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:39,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70690331] [2023-11-12 02:07:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:39,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:39,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:39,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:39,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:07:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:39,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:07:39,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-12 02:07:39,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:39,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136615737] [2023-11-12 02:07:39,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70690331] [2023-11-12 02:07:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70690331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:39,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:39,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339850977] [2023-11-12 02:07:39,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:39,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:39,681 INFO L87 Difference]: Start difference. First operand 326 states and 509 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:39,731 INFO L93 Difference]: Finished difference Result 591 states and 927 transitions. [2023-11-12 02:07:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2023-11-12 02:07:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:39,737 INFO L225 Difference]: With dead ends: 591 [2023-11-12 02:07:39,737 INFO L226 Difference]: Without dead ends: 350 [2023-11-12 02:07:39,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 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 02:07:39,740 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 15 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:39,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 337 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-12 02:07:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 330. [2023-11-12 02:07:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 195 states have (on average 1.3282051282051281) internal successors, (259), 197 states have internal predecessors, (259), 128 states have call successors, (128), 6 states have call predecessors, (128), 6 states have return successors, (128), 126 states have call predecessors, (128), 128 states have call successors, (128) [2023-11-12 02:07:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 515 transitions. [2023-11-12 02:07:39,796 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 515 transitions. Word has length 257 [2023-11-12 02:07:39,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:39,798 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 515 transitions. [2023-11-12 02:07:39,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 515 transitions. [2023-11-12 02:07:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-12 02:07:39,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:39,804 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:39,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:40,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:40,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:40,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 707995552, now seen corresponding path program 1 times [2023-11-12 02:07:40,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:40,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692114877] [2023-11-12 02:07:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:40,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:40,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:40,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657983889] [2023-11-12 02:07:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:40,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:40,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:40,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:40,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:07:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:40,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:40,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-12 02:07:40,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:40,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:40,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692114877] [2023-11-12 02:07:40,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:40,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657983889] [2023-11-12 02:07:40,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657983889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:40,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:40,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672116978] [2023-11-12 02:07:40,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:40,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:40,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:40,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:40,751 INFO L87 Difference]: Start difference. First operand 330 states and 515 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:41,085 INFO L93 Difference]: Finished difference Result 826 states and 1285 transitions. [2023-11-12 02:07:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:41,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2023-11-12 02:07:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:41,092 INFO L225 Difference]: With dead ends: 826 [2023-11-12 02:07:41,092 INFO L226 Difference]: Without dead ends: 577 [2023-11-12 02:07:41,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:41,094 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 158 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:41,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 641 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-12 02:07:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 556. [2023-11-12 02:07:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 330 states have (on average 1.3242424242424242) internal successors, (437), 334 states have internal predecessors, (437), 215 states have call successors, (215), 10 states have call predecessors, (215), 10 states have return successors, (215), 211 states have call predecessors, (215), 215 states have call successors, (215) [2023-11-12 02:07:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 867 transitions. [2023-11-12 02:07:41,194 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 867 transitions. Word has length 257 [2023-11-12 02:07:41,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:41,195 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 867 transitions. [2023-11-12 02:07:41,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 867 transitions. [2023-11-12 02:07:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-12 02:07:41,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:41,201 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:41,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:41,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:41,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:41,409 INFO L85 PathProgramCache]: Analyzing trace with hash 848544162, now seen corresponding path program 1 times [2023-11-12 02:07:41,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:41,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512610696] [2023-11-12 02:07:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:41,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:41,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:41,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251578263] [2023-11-12 02:07:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:41,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:41,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:41,454 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:41,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:07:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:41,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:07:41,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-12 02:07:42,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:42,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512610696] [2023-11-12 02:07:42,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251578263] [2023-11-12 02:07:42,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251578263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:42,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:42,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:42,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721810600] [2023-11-12 02:07:42,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:42,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:42,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:42,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:42,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:42,044 INFO L87 Difference]: Start difference. First operand 556 states and 867 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:42,123 INFO L93 Difference]: Finished difference Result 1029 states and 1606 transitions. [2023-11-12 02:07:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:42,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2023-11-12 02:07:42,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:42,131 INFO L225 Difference]: With dead ends: 1029 [2023-11-12 02:07:42,131 INFO L226 Difference]: Without dead ends: 559 [2023-11-12 02:07:42,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 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 02:07:42,136 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 26 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:42,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 332 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:07:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-12 02:07:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 554. [2023-11-12 02:07:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 328 states have (on average 1.3201219512195121) internal successors, (433), 332 states have internal predecessors, (433), 215 states have call successors, (215), 10 states have call predecessors, (215), 10 states have return successors, (215), 211 states have call predecessors, (215), 215 states have call successors, (215) [2023-11-12 02:07:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 863 transitions. [2023-11-12 02:07:42,232 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 863 transitions. Word has length 257 [2023-11-12 02:07:42,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:42,233 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 863 transitions. [2023-11-12 02:07:42,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 863 transitions. [2023-11-12 02:07:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-12 02:07:42,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:42,240 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:42,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:42,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:07:42,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:42,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1885047330, now seen corresponding path program 1 times [2023-11-12 02:07:42,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:42,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135507569] [2023-11-12 02:07:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:42,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:42,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075381062] [2023-11-12 02:07:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:42,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:42,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:42,499 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:42,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:07:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:42,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:07:42,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2023-11-12 02:07:43,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135507569] [2023-11-12 02:07:43,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075381062] [2023-11-12 02:07:43,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075381062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:43,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:43,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522452780] [2023-11-12 02:07:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:43,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:43,619 INFO L87 Difference]: Start difference. First operand 554 states and 863 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:43,874 INFO L93 Difference]: Finished difference Result 1024 states and 1596 transitions. [2023-11-12 02:07:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:43,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 257 [2023-11-12 02:07:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:43,883 INFO L225 Difference]: With dead ends: 1024 [2023-11-12 02:07:43,883 INFO L226 Difference]: Without dead ends: 556 [2023-11-12 02:07:43,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 254 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 02:07:43,887 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 13 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:43,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 373 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:07:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-11-12 02:07:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2023-11-12 02:07:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 328 states have (on average 1.3170731707317074) internal successors, (432), 332 states have internal predecessors, (432), 215 states have call successors, (215), 10 states have call predecessors, (215), 10 states have return successors, (215), 211 states have call predecessors, (215), 215 states have call successors, (215) [2023-11-12 02:07:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 862 transitions. [2023-11-12 02:07:43,964 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 862 transitions. Word has length 257 [2023-11-12 02:07:43,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:43,965 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 862 transitions. [2023-11-12 02:07:43,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2023-11-12 02:07:43,966 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 862 transitions. [2023-11-12 02:07:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-12 02:07:43,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:43,971 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:43,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:44,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:07:44,178 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:44,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1067398880, now seen corresponding path program 1 times [2023-11-12 02:07:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:44,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211345035] [2023-11-12 02:07:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:44,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:44,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:44,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002293876] [2023-11-12 02:07:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:44,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:44,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:44,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:07:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:44,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:07:44,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1559 proven. 69 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-11-12 02:07:44,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 165 proven. 72 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2023-11-12 02:07:45,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:45,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211345035] [2023-11-12 02:07:45,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:07:45,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002293876] [2023-11-12 02:07:45,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002293876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:45,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:45,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-12 02:07:45,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065289114] [2023-11-12 02:07:45,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:45,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:07:45,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:07:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:07:45,579 INFO L87 Difference]: Start difference. First operand 554 states and 862 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 5 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 5 states have call predecessors, (55), 5 states have call successors, (55) [2023-11-12 02:07:50,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:07:50,372 INFO L93 Difference]: Finished difference Result 2465 states and 3732 transitions. [2023-11-12 02:07:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-12 02:07:50,373 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 5 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 5 states have call predecessors, (55), 5 states have call successors, (55) Word has length 257 [2023-11-12 02:07:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:07:50,391 INFO L225 Difference]: With dead ends: 2465 [2023-11-12 02:07:50,392 INFO L226 Difference]: Without dead ends: 2030 [2023-11-12 02:07:50,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1092, Invalid=3198, Unknown=0, NotChecked=0, Total=4290 [2023-11-12 02:07:50,400 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1117 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:07:50,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 1269 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 02:07:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2023-11-12 02:07:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1738. [2023-11-12 02:07:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1024 states have (on average 1.2763671875) internal successors, (1307), 1040 states have internal predecessors, (1307), 667 states have call successors, (667), 46 states have call predecessors, (667), 46 states have return successors, (667), 651 states have call predecessors, (667), 667 states have call successors, (667) [2023-11-12 02:07:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2641 transitions. [2023-11-12 02:07:50,844 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2641 transitions. Word has length 257 [2023-11-12 02:07:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:07:50,846 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2641 transitions. [2023-11-12 02:07:50,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 5 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 5 states have call predecessors, (55), 5 states have call successors, (55) [2023-11-12 02:07:50,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2641 transitions. [2023-11-12 02:07:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-12 02:07:50,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:07:50,853 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:50,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:51,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:07:51,060 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:07:51,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:51,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1490100706, now seen corresponding path program 1 times [2023-11-12 02:07:51,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:51,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175461691] [2023-11-12 02:07:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:51,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:51,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:07:51,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554493363] [2023-11-12 02:07:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:51,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:51,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:51,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:51,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2214d85c-e025-466b-b6d8-235a00ccd41b/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:07:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:51,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:07:51,385 INFO L285 TraceCheckSpWp]: Computing forward predicates...