./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-99.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-99.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d31b94bbf1da8366d1bc8614cb64a8b0d83f299cc9a1e1e77f3922a9164d57b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:30:06,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:30:06,747 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:30:06,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:30:06,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:30:06,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:30:06,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:30:06,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:30:06,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:30:06,781 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:30:06,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:30:06,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:30:06,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:30:06,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:30:06,784 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:30:06,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:30:06,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:30:06,785 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:30:06,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:30:06,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:30:06,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:30:06,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:30:06,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:30:06,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:30:06,789 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:30:06,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:30:06,790 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:30:06,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:30:06,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:30:06,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:30:06,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:30:06,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:30:06,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:30:06,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:30:06,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:30:06,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:30:06,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:30:06,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:30:06,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:30:06,794 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:30:06,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:30:06,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:30:06,795 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_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d31b94bbf1da8366d1bc8614cb64a8b0d83f299cc9a1e1e77f3922a9164d57b5 [2023-11-29 03:30:07,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:30:07,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:30:07,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:30:07,057 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:30:07,058 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:30:07,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-99.i [2023-11-29 03:30:09,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:30:10,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:30:10,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-99.i [2023-11-29 03:30:10,094 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/data/d8710804b/1d5fe6ccba03486490f502520c1c7b60/FLAGb360a5ca2 [2023-11-29 03:30:10,108 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/data/d8710804b/1d5fe6ccba03486490f502520c1c7b60 [2023-11-29 03:30:10,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:30:10,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:30:10,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:30:10,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:30:10,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:30:10,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f48ade4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10, skipping insertion in model container [2023-11-29 03:30:10,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,178 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:30:10,297 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_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-99.i[916,929] [2023-11-29 03:30:10,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:30:10,522 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:30:10,534 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_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-99.i[916,929] [2023-11-29 03:30:10,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:30:10,683 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:30:10,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10 WrapperNode [2023-11-29 03:30:10,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:30:10,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:30:10,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:30:10,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:30:10,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,805 INFO L138 Inliner]: procedures = 26, calls = 83, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 670 [2023-11-29 03:30:10,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:30:10,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:30:10,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:30:10,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:30:10,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,834 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,903 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 03:30:10,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:30:10,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:30:10,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:30:10,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:30:10,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (1/1) ... [2023-11-29 03:30:10,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:30:11,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:11,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:30:11,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:30:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:30:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:30:11,061 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:30:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:30:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:30:11,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:30:11,193 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:30:11,195 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:30:12,244 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:30:12,298 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:30:12,299 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:30:12,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:30:12 BoogieIcfgContainer [2023-11-29 03:30:12,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:30:12,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:30:12,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:30:12,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:30:12,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:30:10" (1/3) ... [2023-11-29 03:30:12,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f135493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:30:12, skipping insertion in model container [2023-11-29 03:30:12,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:30:10" (2/3) ... [2023-11-29 03:30:12,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f135493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:30:12, skipping insertion in model container [2023-11-29 03:30:12,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:30:12" (3/3) ... [2023-11-29 03:30:12,307 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-99.i [2023-11-29 03:30:12,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:30:12,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:30:12,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:30:12,375 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;@34ab907e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:30:12,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:30:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 191 states have (on average 1.612565445026178) internal successors, (308), 192 states have internal predecessors, (308), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-29 03:30:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:12,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:12,409 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:12,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:12,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1872879120, now seen corresponding path program 1 times [2023-11-29 03:30:12,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:12,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996594161] [2023-11-29 03:30:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:12,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:12,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:12,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085612638] [2023-11-29 03:30:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:12,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:12,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:12,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:12,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:30:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:13,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:30:13,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:13,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:13,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:13,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996594161] [2023-11-29 03:30:13,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:13,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085612638] [2023-11-29 03:30:13,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085612638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:13,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:13,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:30:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433639249] [2023-11-29 03:30:13,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:30:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:13,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:30:13,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:30:13,311 INFO L87 Difference]: Start difference. First operand has 264 states, 191 states have (on average 1.612565445026178) internal successors, (308), 192 states have internal predecessors, (308), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:13,388 INFO L93 Difference]: Finished difference Result 525 states and 964 transitions. [2023-11-29 03:30:13,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:30:13,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:13,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:13,406 INFO L225 Difference]: With dead ends: 525 [2023-11-29 03:30:13,407 INFO L226 Difference]: Without dead ends: 262 [2023-11-29 03:30:13,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:30:13,417 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:13,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 439 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:30:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-29 03:30:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-11-29 03:30:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 190 states have (on average 1.5894736842105264) internal successors, (302), 190 states have internal predecessors, (302), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-29 03:30:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 442 transitions. [2023-11-29 03:30:13,493 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 442 transitions. Word has length 479 [2023-11-29 03:30:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:13,496 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 442 transitions. [2023-11-29 03:30:13,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 442 transitions. [2023-11-29 03:30:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:13,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:13,511 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:13,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:30:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:13,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:13,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1450177294, now seen corresponding path program 1 times [2023-11-29 03:30:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085728031] [2023-11-29 03:30:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:13,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:13,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681103963] [2023-11-29 03:30:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:13,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:13,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:13,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:13,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:30:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:14,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:30:14,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:15,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:15,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085728031] [2023-11-29 03:30:15,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681103963] [2023-11-29 03:30:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681103963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:15,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:30:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917914272] [2023-11-29 03:30:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:15,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:30:15,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:30:15,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:30:15,882 INFO L87 Difference]: Start difference. First operand 262 states and 442 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:16,378 INFO L93 Difference]: Finished difference Result 847 states and 1431 transitions. [2023-11-29 03:30:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:30:16,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:16,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:16,386 INFO L225 Difference]: With dead ends: 847 [2023-11-29 03:30:16,386 INFO L226 Difference]: Without dead ends: 586 [2023-11-29 03:30:16,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:30:16,389 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 590 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:16,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1335 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:30:16,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-29 03:30:16,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 519. [2023-11-29 03:30:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 376 states have (on average 1.5877659574468086) internal successors, (597), 376 states have internal predecessors, (597), 140 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2023-11-29 03:30:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 877 transitions. [2023-11-29 03:30:16,462 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 877 transitions. Word has length 479 [2023-11-29 03:30:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:16,464 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 877 transitions. [2023-11-29 03:30:16,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 877 transitions. [2023-11-29 03:30:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:16,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:16,477 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:16,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:30:16,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:16,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:16,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash -387358998, now seen corresponding path program 1 times [2023-11-29 03:30:16,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:16,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878324777] [2023-11-29 03:30:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:16,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:16,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:16,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680460985] [2023-11-29 03:30:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:16,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:16,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:16,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:16,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:30:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:17,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:30:17,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:18,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:18,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:18,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878324777] [2023-11-29 03:30:18,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:18,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680460985] [2023-11-29 03:30:18,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680460985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:18,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:30:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191410433] [2023-11-29 03:30:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:30:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:30:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:30:18,796 INFO L87 Difference]: Start difference. First operand 519 states and 877 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:19,499 INFO L93 Difference]: Finished difference Result 2091 states and 3541 transitions. [2023-11-29 03:30:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:30:19,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:19,522 INFO L225 Difference]: With dead ends: 2091 [2023-11-29 03:30:19,522 INFO L226 Difference]: Without dead ends: 1573 [2023-11-29 03:30:19,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:30:19,526 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 546 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:19,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 2190 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:30:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-11-29 03:30:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1037. [2023-11-29 03:30:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 752 states have (on average 1.5851063829787233) internal successors, (1192), 752 states have internal predecessors, (1192), 280 states have call successors, (280), 4 states have call predecessors, (280), 4 states have return successors, (280), 280 states have call predecessors, (280), 280 states have call successors, (280) [2023-11-29 03:30:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1752 transitions. [2023-11-29 03:30:19,743 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1752 transitions. Word has length 479 [2023-11-29 03:30:19,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:19,745 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1752 transitions. [2023-11-29 03:30:19,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1752 transitions. [2023-11-29 03:30:19,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:19,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:19,751 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:19,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:30:19,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:19,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:19,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:19,952 INFO L85 PathProgramCache]: Analyzing trace with hash -129193560, now seen corresponding path program 1 times [2023-11-29 03:30:19,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:19,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718887835] [2023-11-29 03:30:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:19,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:20,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742459595] [2023-11-29 03:30:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:20,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:20,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:20,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:20,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:30:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:20,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:30:20,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:20,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:20,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718887835] [2023-11-29 03:30:20,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742459595] [2023-11-29 03:30:20,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742459595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:20,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:20,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:30:20,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510807991] [2023-11-29 03:30:20,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:20,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:30:20,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:30:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:20,497 INFO L87 Difference]: Start difference. First operand 1037 states and 1752 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:20,668 INFO L93 Difference]: Finished difference Result 3109 states and 5254 transitions. [2023-11-29 03:30:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:30:20,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:20,684 INFO L225 Difference]: With dead ends: 3109 [2023-11-29 03:30:20,684 INFO L226 Difference]: Without dead ends: 2073 [2023-11-29 03:30:20,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:20,689 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 436 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:20,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1067 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:30:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-11-29 03:30:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2067. [2023-11-29 03:30:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 1498 states have (on average 1.5794392523364487) internal successors, (2366), 1498 states have internal predecessors, (2366), 560 states have call successors, (560), 8 states have call predecessors, (560), 8 states have return successors, (560), 560 states have call predecessors, (560), 560 states have call successors, (560) [2023-11-29 03:30:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3486 transitions. [2023-11-29 03:30:20,951 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3486 transitions. Word has length 479 [2023-11-29 03:30:20,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:20,952 INFO L495 AbstractCegarLoop]: Abstraction has 2067 states and 3486 transitions. [2023-11-29 03:30:20,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:20,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3486 transitions. [2023-11-29 03:30:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:20,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:20,957 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:20,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:30:21,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:21,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:21,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:21,159 INFO L85 PathProgramCache]: Analyzing trace with hash -156259162, now seen corresponding path program 1 times [2023-11-29 03:30:21,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:21,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210060093] [2023-11-29 03:30:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:21,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:21,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:21,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435318382] [2023-11-29 03:30:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:21,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:21,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:21,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:21,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:30:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:21,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:30:21,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:21,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:21,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:21,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210060093] [2023-11-29 03:30:21,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:21,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435318382] [2023-11-29 03:30:21,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435318382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:21,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:21,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:30:21,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136547305] [2023-11-29 03:30:21,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:21,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:30:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:21,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:30:21,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:21,683 INFO L87 Difference]: Start difference. First operand 2067 states and 3486 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:21,931 INFO L93 Difference]: Finished difference Result 5255 states and 8884 transitions. [2023-11-29 03:30:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:30:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:21,955 INFO L225 Difference]: With dead ends: 5255 [2023-11-29 03:30:21,956 INFO L226 Difference]: Without dead ends: 3189 [2023-11-29 03:30:21,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:21,964 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 229 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:21,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 881 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:30:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2023-11-29 03:30:22,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3179. [2023-11-29 03:30:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2538 states have (on average 1.6256895193065406) internal successors, (4126), 2546 states have internal predecessors, (4126), 624 states have call successors, (624), 16 states have call predecessors, (624), 16 states have return successors, (624), 616 states have call predecessors, (624), 624 states have call successors, (624) [2023-11-29 03:30:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5374 transitions. [2023-11-29 03:30:22,338 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5374 transitions. Word has length 479 [2023-11-29 03:30:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:22,339 INFO L495 AbstractCegarLoop]: Abstraction has 3179 states and 5374 transitions. [2023-11-29 03:30:22,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:22,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5374 transitions. [2023-11-29 03:30:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:22,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:22,347 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:22,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:30:22,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:22,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:22,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:22,548 INFO L85 PathProgramCache]: Analyzing trace with hash 45564772, now seen corresponding path program 1 times [2023-11-29 03:30:22,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:22,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005793483] [2023-11-29 03:30:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:22,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:22,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:22,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017004636] [2023-11-29 03:30:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:22,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:22,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:22,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:22,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:30:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:22,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:30:22,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:23,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:23,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:23,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005793483] [2023-11-29 03:30:23,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:23,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017004636] [2023-11-29 03:30:23,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017004636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:23,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:30:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826160459] [2023-11-29 03:30:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:23,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:30:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:23,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:30:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:23,031 INFO L87 Difference]: Start difference. First operand 3179 states and 5374 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:23,408 INFO L93 Difference]: Finished difference Result 8847 states and 14956 transitions. [2023-11-29 03:30:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:30:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:23,450 INFO L225 Difference]: With dead ends: 8847 [2023-11-29 03:30:23,450 INFO L226 Difference]: Without dead ends: 5669 [2023-11-29 03:30:23,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:23,461 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 305 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:23,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 860 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:30:23,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2023-11-29 03:30:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5659. [2023-11-29 03:30:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5659 states, 4618 states have (on average 1.6262451277609355) internal successors, (7510), 4642 states have internal predecessors, (7510), 1008 states have call successors, (1008), 32 states have call predecessors, (1008), 32 states have return successors, (1008), 984 states have call predecessors, (1008), 1008 states have call successors, (1008) [2023-11-29 03:30:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5659 states to 5659 states and 9526 transitions. [2023-11-29 03:30:23,991 INFO L78 Accepts]: Start accepts. Automaton has 5659 states and 9526 transitions. Word has length 479 [2023-11-29 03:30:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:23,991 INFO L495 AbstractCegarLoop]: Abstraction has 5659 states and 9526 transitions. [2023-11-29 03:30:23,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5659 states and 9526 transitions. [2023-11-29 03:30:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:23,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:23,999 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:24,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:30:24,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 03:30:24,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:24,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2007139430, now seen corresponding path program 1 times [2023-11-29 03:30:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:24,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018831408] [2023-11-29 03:30:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:24,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:24,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:24,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583109574] [2023-11-29 03:30:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:24,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:24,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:24,282 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:24,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:30:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:24,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:30:24,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:24,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:24,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:24,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018831408] [2023-11-29 03:30:24,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:24,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583109574] [2023-11-29 03:30:24,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583109574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:24,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:24,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:30:24,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552137489] [2023-11-29 03:30:24,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:24,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:30:24,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:30:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:24,761 INFO L87 Difference]: Start difference. First operand 5659 states and 9526 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:25,336 INFO L93 Difference]: Finished difference Result 16375 states and 27564 transitions. [2023-11-29 03:30:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:30:25,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:25,452 INFO L225 Difference]: With dead ends: 16375 [2023-11-29 03:30:25,452 INFO L226 Difference]: Without dead ends: 10717 [2023-11-29 03:30:25,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:25,466 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 310 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:25,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 974 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:30:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10717 states. [2023-11-29 03:30:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10717 to 10707. [2023-11-29 03:30:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10707 states, 8850 states have (on average 1.6287005649717514) internal successors, (14414), 8906 states have internal predecessors, (14414), 1792 states have call successors, (1792), 64 states have call predecessors, (1792), 64 states have return successors, (1792), 1736 states have call predecessors, (1792), 1792 states have call successors, (1792) [2023-11-29 03:30:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10707 states to 10707 states and 17998 transitions. [2023-11-29 03:30:26,223 INFO L78 Accepts]: Start accepts. Automaton has 10707 states and 17998 transitions. Word has length 479 [2023-11-29 03:30:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:26,224 INFO L495 AbstractCegarLoop]: Abstraction has 10707 states and 17998 transitions. [2023-11-29 03:30:26,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:26,225 INFO L276 IsEmpty]: Start isEmpty. Operand 10707 states and 17998 transitions. [2023-11-29 03:30:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:26,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:26,237 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:26,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 03:30:26,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:26,438 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:26,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash 746222180, now seen corresponding path program 1 times [2023-11-29 03:30:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697397097] [2023-11-29 03:30:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:26,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:26,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:26,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572556920] [2023-11-29 03:30:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:26,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:26,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:26,523 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:26,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:30:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:26,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:30:27,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:27,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:27,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:27,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697397097] [2023-11-29 03:30:27,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:27,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572556920] [2023-11-29 03:30:27,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572556920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:27,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:27,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:30:27,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793720632] [2023-11-29 03:30:27,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:27,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:30:27,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:30:27,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:27,068 INFO L87 Difference]: Start difference. First operand 10707 states and 17998 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:27,626 INFO L93 Difference]: Finished difference Result 30007 states and 50492 transitions. [2023-11-29 03:30:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:30:27,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:27,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:27,681 INFO L225 Difference]: With dead ends: 30007 [2023-11-29 03:30:27,682 INFO L226 Difference]: Without dead ends: 19301 [2023-11-29 03:30:27,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:27,705 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 226 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:27,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 904 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:30:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19301 states. [2023-11-29 03:30:28,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19301 to 19267. [2023-11-29 03:30:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19267 states, 16706 states have (on average 1.6443194062013649) internal successors, (27470), 16826 states have internal predecessors, (27470), 2432 states have call successors, (2432), 128 states have call predecessors, (2432), 128 states have return successors, (2432), 2312 states have call predecessors, (2432), 2432 states have call successors, (2432) [2023-11-29 03:30:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19267 states to 19267 states and 32334 transitions. [2023-11-29 03:30:28,933 INFO L78 Accepts]: Start accepts. Automaton has 19267 states and 32334 transitions. Word has length 479 [2023-11-29 03:30:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:28,934 INFO L495 AbstractCegarLoop]: Abstraction has 19267 states and 32334 transitions. [2023-11-29 03:30:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 19267 states and 32334 transitions. [2023-11-29 03:30:28,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:28,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:28,970 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:28,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:30:29,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:29,173 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:29,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:29,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1641583460, now seen corresponding path program 1 times [2023-11-29 03:30:29,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:29,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055663127] [2023-11-29 03:30:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:29,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:29,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:29,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760870047] [2023-11-29 03:30:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:29,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:29,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:29,282 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:29,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:30:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:29,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:30:29,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:29,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:29,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:29,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055663127] [2023-11-29 03:30:29,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:29,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760870047] [2023-11-29 03:30:29,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760870047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:29,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:29,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:30:29,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897519325] [2023-11-29 03:30:29,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:29,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:30:29,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:30:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:29,745 INFO L87 Difference]: Start difference. First operand 19267 states and 32334 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:30,847 INFO L93 Difference]: Finished difference Result 53895 states and 90472 transitions. [2023-11-29 03:30:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:30:30,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:30,933 INFO L225 Difference]: With dead ends: 53895 [2023-11-29 03:30:30,934 INFO L226 Difference]: Without dead ends: 34629 [2023-11-29 03:30:30,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:30:30,968 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 385 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:30,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1237 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:30:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34629 states. [2023-11-29 03:30:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34629 to 19523. [2023-11-29 03:30:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19523 states, 16962 states have (on average 1.6345949770074284) internal successors, (27726), 17082 states have internal predecessors, (27726), 2432 states have call successors, (2432), 128 states have call predecessors, (2432), 128 states have return successors, (2432), 2312 states have call predecessors, (2432), 2432 states have call successors, (2432) [2023-11-29 03:30:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19523 states to 19523 states and 32590 transitions. [2023-11-29 03:30:32,412 INFO L78 Accepts]: Start accepts. Automaton has 19523 states and 32590 transitions. Word has length 479 [2023-11-29 03:30:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:32,413 INFO L495 AbstractCegarLoop]: Abstraction has 19523 states and 32590 transitions. [2023-11-29 03:30:32,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 19523 states and 32590 transitions. [2023-11-29 03:30:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:32,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:32,437 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:32,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:30:32,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:32,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:32,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash 744190182, now seen corresponding path program 1 times [2023-11-29 03:30:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703518846] [2023-11-29 03:30:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:32,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:32,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141302650] [2023-11-29 03:30:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:32,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:32,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:32,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:32,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:30:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:33,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:30:33,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 2037 proven. 183 refuted. 0 times theorem prover too weak. 7440 trivial. 0 not checked. [2023-11-29 03:30:33,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:30:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 24 proven. 183 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-29 03:30:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703518846] [2023-11-29 03:30:34,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141302650] [2023-11-29 03:30:34,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141302650] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:30:34,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:30:34,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 03:30:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267803906] [2023-11-29 03:30:34,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:30:34,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:30:34,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:34,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:30:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:30:34,219 INFO L87 Difference]: Start difference. First operand 19523 states and 32590 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 03:30:35,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:35,227 INFO L93 Difference]: Finished difference Result 30829 states and 51163 transitions. [2023-11-29 03:30:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:30:35,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 479 [2023-11-29 03:30:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:35,263 INFO L225 Difference]: With dead ends: 30829 [2023-11-29 03:30:35,263 INFO L226 Difference]: Without dead ends: 11307 [2023-11-29 03:30:35,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 950 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:30:35,287 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 497 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:35,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 921 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:30:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2023-11-29 03:30:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 11179. [2023-11-29 03:30:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11179 states, 9130 states have (on average 1.5848849945235488) internal successors, (14470), 9186 states have internal predecessors, (14470), 1920 states have call successors, (1920), 128 states have call predecessors, (1920), 128 states have return successors, (1920), 1864 states have call predecessors, (1920), 1920 states have call successors, (1920) [2023-11-29 03:30:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11179 states to 11179 states and 18310 transitions. [2023-11-29 03:30:36,227 INFO L78 Accepts]: Start accepts. Automaton has 11179 states and 18310 transitions. Word has length 479 [2023-11-29 03:30:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:36,228 INFO L495 AbstractCegarLoop]: Abstraction has 11179 states and 18310 transitions. [2023-11-29 03:30:36,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 03:30:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 11179 states and 18310 transitions. [2023-11-29 03:30:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:36,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:36,241 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:36,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:30:36,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:30:36,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:36,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:36,443 INFO L85 PathProgramCache]: Analyzing trace with hash 619267046, now seen corresponding path program 1 times [2023-11-29 03:30:36,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:36,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381292806] [2023-11-29 03:30:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:36,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:36,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:36,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062635316] [2023-11-29 03:30:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:36,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:36,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:36,506 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:36,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:30:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:36,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:30:36,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4857 proven. 93 refuted. 0 times theorem prover too weak. 4710 trivial. 0 not checked. [2023-11-29 03:30:37,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:30:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 114 proven. 93 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-29 03:30:37,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:37,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381292806] [2023-11-29 03:30:37,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:37,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062635316] [2023-11-29 03:30:37,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062635316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:30:37,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:30:37,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 03:30:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932175966] [2023-11-29 03:30:37,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:30:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:30:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:37,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:30:37,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:30:37,562 INFO L87 Difference]: Start difference. First operand 11179 states and 18310 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-11-29 03:30:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:38,459 INFO L93 Difference]: Finished difference Result 22613 states and 36843 transitions. [2023-11-29 03:30:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:30:38,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 479 [2023-11-29 03:30:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:38,489 INFO L225 Difference]: With dead ends: 22613 [2023-11-29 03:30:38,489 INFO L226 Difference]: Without dead ends: 11435 [2023-11-29 03:30:38,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 950 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:30:38,503 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 557 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:38,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 908 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:30:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11435 states. [2023-11-29 03:30:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11435 to 11307. [2023-11-29 03:30:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 9226 states have (on average 1.5779319314979405) internal successors, (14558), 9282 states have internal predecessors, (14558), 1920 states have call successors, (1920), 160 states have call predecessors, (1920), 160 states have return successors, (1920), 1864 states have call predecessors, (1920), 1920 states have call successors, (1920) [2023-11-29 03:30:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 18398 transitions. [2023-11-29 03:30:39,176 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 18398 transitions. Word has length 479 [2023-11-29 03:30:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:39,177 INFO L495 AbstractCegarLoop]: Abstraction has 11307 states and 18398 transitions. [2023-11-29 03:30:39,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 3 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2023-11-29 03:30:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 18398 transitions. [2023-11-29 03:30:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:39,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:39,187 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:39,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:30:39,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:39,388 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:39,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1289190744, now seen corresponding path program 1 times [2023-11-29 03:30:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:39,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033841500] [2023-11-29 03:30:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:39,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:39,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080692276] [2023-11-29 03:30:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:39,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:39,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:39,459 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:39,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:30:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:39,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:30:39,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:40,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:40,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:40,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033841500] [2023-11-29 03:30:40,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:40,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080692276] [2023-11-29 03:30:40,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080692276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:40,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:40,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:30:40,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606798018] [2023-11-29 03:30:40,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:40,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:30:40,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:40,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:30:40,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:30:40,509 INFO L87 Difference]: Start difference. First operand 11307 states and 18398 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:43,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:43,143 INFO L93 Difference]: Finished difference Result 32072 states and 51984 transitions. [2023-11-29 03:30:43,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:30:43,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:43,219 INFO L225 Difference]: With dead ends: 32072 [2023-11-29 03:30:43,219 INFO L226 Difference]: Without dead ends: 20766 [2023-11-29 03:30:43,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:30:43,241 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 1958 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:43,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 2780 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:30:43,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20766 states. [2023-11-29 03:30:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20766 to 20339. [2023-11-29 03:30:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20339 states, 16362 states have (on average 1.552988632196553) internal successors, (25410), 16458 states have internal predecessors, (25410), 3664 states have call successors, (3664), 312 states have call predecessors, (3664), 312 states have return successors, (3664), 3568 states have call predecessors, (3664), 3664 states have call successors, (3664) [2023-11-29 03:30:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20339 states to 20339 states and 32738 transitions. [2023-11-29 03:30:44,882 INFO L78 Accepts]: Start accepts. Automaton has 20339 states and 32738 transitions. Word has length 479 [2023-11-29 03:30:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:44,883 INFO L495 AbstractCegarLoop]: Abstraction has 20339 states and 32738 transitions. [2023-11-29 03:30:44,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 7 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 20339 states and 32738 transitions. [2023-11-29 03:30:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 03:30:44,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:44,895 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:44,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:30:45,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:30:45,095 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:45,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1098594792, now seen corresponding path program 1 times [2023-11-29 03:30:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:45,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618955154] [2023-11-29 03:30:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:45,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:45,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276854304] [2023-11-29 03:30:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:45,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:45,163 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:45,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:30:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:45,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:30:45,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:45,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:45,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:45,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618955154] [2023-11-29 03:30:45,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:45,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276854304] [2023-11-29 03:30:45,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276854304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:45,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:45,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:30:45,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45303347] [2023-11-29 03:30:45,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:45,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:30:45,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:45,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:30:45,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:30:45,749 INFO L87 Difference]: Start difference. First operand 20339 states and 32738 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:47,240 INFO L93 Difference]: Finished difference Result 30568 states and 49029 transitions. [2023-11-29 03:30:47,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:30:47,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 479 [2023-11-29 03:30:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:47,283 INFO L225 Difference]: With dead ends: 30568 [2023-11-29 03:30:47,283 INFO L226 Difference]: Without dead ends: 19262 [2023-11-29 03:30:47,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:30:47,301 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1063 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:47,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1593 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:30:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19262 states. [2023-11-29 03:30:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19262 to 18971. [2023-11-29 03:30:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18971 states, 15346 states have (on average 1.5364264303401538) internal successors, (23578), 15426 states have internal predecessors, (23578), 3248 states have call successors, (3248), 376 states have call predecessors, (3248), 376 states have return successors, (3248), 3168 states have call predecessors, (3248), 3248 states have call successors, (3248) [2023-11-29 03:30:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18971 states to 18971 states and 30074 transitions. [2023-11-29 03:30:48,545 INFO L78 Accepts]: Start accepts. Automaton has 18971 states and 30074 transitions. Word has length 479 [2023-11-29 03:30:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:48,546 INFO L495 AbstractCegarLoop]: Abstraction has 18971 states and 30074 transitions. [2023-11-29 03:30:48,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 18971 states and 30074 transitions. [2023-11-29 03:30:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-11-29 03:30:48,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:48,558 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:48,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:30:48,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:30:48,759 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:48,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash -587730280, now seen corresponding path program 1 times [2023-11-29 03:30:48,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:48,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982460995] [2023-11-29 03:30:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:48,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125477674] [2023-11-29 03:30:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:48,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:48,823 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:48,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:30:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:49,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:30:49,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:30:49,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:30:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982460995] [2023-11-29 03:30:49,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:49,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125477674] [2023-11-29 03:30:49,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125477674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:30:49,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:30:49,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:30:49,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116949849] [2023-11-29 03:30:49,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:30:49,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:30:49,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:30:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:30:49,745 INFO L87 Difference]: Start difference. First operand 18971 states and 30074 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:51,957 INFO L93 Difference]: Finished difference Result 59425 states and 94093 transitions. [2023-11-29 03:30:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:30:51,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 481 [2023-11-29 03:30:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:52,026 INFO L225 Difference]: With dead ends: 59425 [2023-11-29 03:30:52,026 INFO L226 Difference]: Without dead ends: 40455 [2023-11-29 03:30:52,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:30:52,052 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 524 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:52,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1746 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:30:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40455 states. [2023-11-29 03:30:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40455 to 38427. [2023-11-29 03:30:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38427 states, 31178 states have (on average 1.5267817050484316) internal successors, (47602), 31338 states have internal predecessors, (47602), 6496 states have call successors, (6496), 752 states have call predecessors, (6496), 752 states have return successors, (6496), 6336 states have call predecessors, (6496), 6496 states have call successors, (6496) [2023-11-29 03:30:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38427 states to 38427 states and 60594 transitions. [2023-11-29 03:30:54,684 INFO L78 Accepts]: Start accepts. Automaton has 38427 states and 60594 transitions. Word has length 481 [2023-11-29 03:30:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:54,685 INFO L495 AbstractCegarLoop]: Abstraction has 38427 states and 60594 transitions. [2023-11-29 03:30:54,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:30:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 38427 states and 60594 transitions. [2023-11-29 03:30:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 03:30:54,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:54,695 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:54,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:30:54,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:30:54,895 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:30:54,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:30:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1352381155, now seen corresponding path program 1 times [2023-11-29 03:30:54,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:30:54,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851857942] [2023-11-29 03:30:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:54,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:30:54,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:30:54,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115463202] [2023-11-29 03:30:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:30:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:30:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:30:54,951 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:30:54,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:30:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:30:55,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:30:55,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:30:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4627 proven. 78 refuted. 0 times theorem prover too weak. 4955 trivial. 0 not checked. [2023-11-29 03:30:55,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:30:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 129 proven. 78 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-29 03:30:55,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:30:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851857942] [2023-11-29 03:30:55,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:30:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115463202] [2023-11-29 03:30:55,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115463202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:30:55,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:30:55,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 03:30:55,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190134010] [2023-11-29 03:30:55,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:30:55,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:30:55,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:30:55,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:30:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:30:55,828 INFO L87 Difference]: Start difference. First operand 38427 states and 60594 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-29 03:30:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:30:58,055 INFO L93 Difference]: Finished difference Result 62533 states and 98243 transitions. [2023-11-29 03:30:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:30:58,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 482 [2023-11-29 03:30:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:30:58,112 INFO L225 Difference]: With dead ends: 62533 [2023-11-29 03:30:58,112 INFO L226 Difference]: Without dead ends: 24107 [2023-11-29 03:30:58,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 956 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:30:58,164 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 552 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:30:58,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 909 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:30:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24107 states. [2023-11-29 03:30:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24107 to 23563. [2023-11-29 03:30:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23563 states, 18714 states have (on average 1.507427594314417) internal successors, (28210), 18794 states have internal predecessors, (28210), 4352 states have call successors, (4352), 496 states have call predecessors, (4352), 496 states have return successors, (4352), 4272 states have call predecessors, (4352), 4352 states have call successors, (4352) [2023-11-29 03:30:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23563 states to 23563 states and 36914 transitions. [2023-11-29 03:30:59,925 INFO L78 Accepts]: Start accepts. Automaton has 23563 states and 36914 transitions. Word has length 482 [2023-11-29 03:30:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:30:59,926 INFO L495 AbstractCegarLoop]: Abstraction has 23563 states and 36914 transitions. [2023-11-29 03:30:59,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-29 03:30:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 23563 states and 36914 transitions. [2023-11-29 03:30:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 03:30:59,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:30:59,933 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:30:59,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:31:00,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:31:00,134 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:31:00,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:31:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1420454759, now seen corresponding path program 1 times [2023-11-29 03:31:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:31:00,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309172833] [2023-11-29 03:31:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:31:00,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:31:00,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580858286] [2023-11-29 03:31:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:00,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:31:00,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:31:00,202 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:31:00,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:31:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:31:00,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:31:00,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:31:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:31:00,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:31:00,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:31:00,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309172833] [2023-11-29 03:31:00,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:31:00,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580858286] [2023-11-29 03:31:00,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580858286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:31:00,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:31:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:31:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269697436] [2023-11-29 03:31:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:31:00,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:31:00,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:31:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:31:00,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:31:00,625 INFO L87 Difference]: Start difference. First operand 23563 states and 36914 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:31:03,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:31:03,541 INFO L93 Difference]: Finished difference Result 70591 states and 110548 transitions. [2023-11-29 03:31:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:31:03,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 482 [2023-11-29 03:31:03,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:31:03,628 INFO L225 Difference]: With dead ends: 70591 [2023-11-29 03:31:03,628 INFO L226 Difference]: Without dead ends: 47029 [2023-11-29 03:31:03,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:31:03,665 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 405 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:31:03,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1202 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:31:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47029 states. [2023-11-29 03:31:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47029 to 28587. [2023-11-29 03:31:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28587 states, 23738 states have (on average 1.5321425562389417) internal successors, (36370), 23818 states have internal predecessors, (36370), 4352 states have call successors, (4352), 496 states have call predecessors, (4352), 496 states have return successors, (4352), 4272 states have call predecessors, (4352), 4352 states have call successors, (4352) [2023-11-29 03:31:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28587 states to 28587 states and 45074 transitions. [2023-11-29 03:31:05,988 INFO L78 Accepts]: Start accepts. Automaton has 28587 states and 45074 transitions. Word has length 482 [2023-11-29 03:31:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:31:05,989 INFO L495 AbstractCegarLoop]: Abstraction has 28587 states and 45074 transitions. [2023-11-29 03:31:05,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:31:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 28587 states and 45074 transitions. [2023-11-29 03:31:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 03:31:05,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:31:05,997 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:31:06,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:31:06,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:31:06,197 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:31:06,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:31:06,198 INFO L85 PathProgramCache]: Analyzing trace with hash 859754981, now seen corresponding path program 1 times [2023-11-29 03:31:06,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:31:06,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649311265] [2023-11-29 03:31:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:06,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:31:06,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:31:06,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744007591] [2023-11-29 03:31:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:06,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:31:06,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:31:06,257 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:31:06,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:31:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:31:06,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:31:06,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:31:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:31:08,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:31:08,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:31:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649311265] [2023-11-29 03:31:08,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:31:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744007591] [2023-11-29 03:31:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744007591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:31:08,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:31:08,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:31:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993975326] [2023-11-29 03:31:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:31:08,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:31:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:31:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:31:08,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:31:08,050 INFO L87 Difference]: Start difference. First operand 28587 states and 45074 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:31:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:31:13,645 INFO L93 Difference]: Finished difference Result 112705 states and 177461 transitions. [2023-11-29 03:31:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:31:13,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 482 [2023-11-29 03:31:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:31:13,777 INFO L225 Difference]: With dead ends: 112705 [2023-11-29 03:31:13,778 INFO L226 Difference]: Without dead ends: 84119 [2023-11-29 03:31:13,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:31:13,815 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 1229 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:31:13,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 1185 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:31:13,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84119 states. [2023-11-29 03:31:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84119 to 80523. [2023-11-29 03:31:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80523 states, 67162 states have (on average 1.523272088383312) internal successors, (102306), 67434 states have internal predecessors, (102306), 11856 states have call successors, (11856), 1504 states have call predecessors, (11856), 1504 states have return successors, (11856), 11584 states have call predecessors, (11856), 11856 states have call successors, (11856) [2023-11-29 03:31:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80523 states to 80523 states and 126018 transitions. [2023-11-29 03:31:20,372 INFO L78 Accepts]: Start accepts. Automaton has 80523 states and 126018 transitions. Word has length 482 [2023-11-29 03:31:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:31:20,373 INFO L495 AbstractCegarLoop]: Abstraction has 80523 states and 126018 transitions. [2023-11-29 03:31:20,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:31:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 80523 states and 126018 transitions. [2023-11-29 03:31:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 03:31:20,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:31:20,387 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:31:20,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:31:20,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:31:20,588 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:31:20,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:31:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1260460525, now seen corresponding path program 1 times [2023-11-29 03:31:20,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:31:20,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656042202] [2023-11-29 03:31:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:20,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:31:20,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:31:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100106334] [2023-11-29 03:31:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:20,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:31:20,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:31:20,655 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:31:20,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:31:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:31:21,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:31:21,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:31:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:31:21,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:31:21,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:31:21,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656042202] [2023-11-29 03:31:21,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:31:21,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100106334] [2023-11-29 03:31:21,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100106334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:31:21,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:31:21,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:31:21,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368485160] [2023-11-29 03:31:21,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:31:21,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:31:21,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:31:21,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:31:21,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:31:21,347 INFO L87 Difference]: Start difference. First operand 80523 states and 126018 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:31:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:31:28,163 INFO L93 Difference]: Finished difference Result 176762 states and 276481 transitions. [2023-11-29 03:31:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:31:28,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 482 [2023-11-29 03:31:28,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:31:28,315 INFO L225 Difference]: With dead ends: 176762 [2023-11-29 03:31:28,315 INFO L226 Difference]: Without dead ends: 96240 [2023-11-29 03:31:28,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:31:28,394 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 1995 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:31:28,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1995 Valid, 2775 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:31:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96240 states. [2023-11-29 03:31:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96240 to 91143. [2023-11-29 03:31:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91143 states, 75950 states have (on average 1.5220803159973666) internal successors, (115602), 76278 states have internal predecessors, (115602), 13432 states have call successors, (13432), 1760 states have call predecessors, (13432), 1760 states have return successors, (13432), 13104 states have call predecessors, (13432), 13432 states have call successors, (13432) [2023-11-29 03:31:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91143 states to 91143 states and 142466 transitions. [2023-11-29 03:31:36,217 INFO L78 Accepts]: Start accepts. Automaton has 91143 states and 142466 transitions. Word has length 482 [2023-11-29 03:31:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:31:36,218 INFO L495 AbstractCegarLoop]: Abstraction has 91143 states and 142466 transitions. [2023-11-29 03:31:36,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:31:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 91143 states and 142466 transitions. [2023-11-29 03:31:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 03:31:36,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:31:36,235 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:31:36,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:31:36,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:31:36,436 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:31:36,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:31:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash 358197805, now seen corresponding path program 1 times [2023-11-29 03:31:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:31:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980011766] [2023-11-29 03:31:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:31:36,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:31:36,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42199320] [2023-11-29 03:31:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:36,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:31:36,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:31:36,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:31:36,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:31:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:31:36,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:31:36,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:31:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:31:37,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:31:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:31:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980011766] [2023-11-29 03:31:37,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:31:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42199320] [2023-11-29 03:31:37,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42199320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:31:37,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:31:37,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:31:37,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147221680] [2023-11-29 03:31:37,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:31:37,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:31:37,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:31:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:31:37,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:31:37,521 INFO L87 Difference]: Start difference. First operand 91143 states and 142466 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:31:46,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:31:46,753 INFO L93 Difference]: Finished difference Result 225309 states and 352191 transitions. [2023-11-29 03:31:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:31:46,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 482 [2023-11-29 03:31:46,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:31:46,970 INFO L225 Difference]: With dead ends: 225309 [2023-11-29 03:31:46,970 INFO L226 Difference]: Without dead ends: 134119 [2023-11-29 03:31:47,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:31:47,067 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1530 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:31:47,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1899 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:31:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134119 states. [2023-11-29 03:31:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134119 to 100919. [2023-11-29 03:31:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100919 states, 85310 states have (on average 1.529410385652327) internal successors, (130474), 85670 states have internal predecessors, (130474), 13752 states have call successors, (13752), 1856 states have call predecessors, (13752), 1856 states have return successors, (13752), 13392 states have call predecessors, (13752), 13752 states have call successors, (13752) [2023-11-29 03:31:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100919 states to 100919 states and 157978 transitions. [2023-11-29 03:31:54,679 INFO L78 Accepts]: Start accepts. Automaton has 100919 states and 157978 transitions. Word has length 482 [2023-11-29 03:31:54,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:31:54,679 INFO L495 AbstractCegarLoop]: Abstraction has 100919 states and 157978 transitions. [2023-11-29 03:31:54,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:31:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 100919 states and 157978 transitions. [2023-11-29 03:31:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 03:31:54,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:31:54,698 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:31:54,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:31:54,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:31:54,899 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:31:54,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:31:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1518254383, now seen corresponding path program 1 times [2023-11-29 03:31:54,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:31:54,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252725295] [2023-11-29 03:31:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:31:54,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:31:54,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230551599] [2023-11-29 03:31:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:31:54,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:31:54,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:31:54,955 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:31:54,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:31:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:31:55,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:31:55,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:31:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 2829 proven. 171 refuted. 0 times theorem prover too weak. 6660 trivial. 0 not checked. [2023-11-29 03:31:55,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:31:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 36 proven. 171 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-29 03:31:56,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:31:56,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252725295] [2023-11-29 03:31:56,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:31:56,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230551599] [2023-11-29 03:31:56,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230551599] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:31:56,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:31:56,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 03:31:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345501319] [2023-11-29 03:31:56,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:31:56,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:31:56,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:31:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:31:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:31:56,117 INFO L87 Difference]: Start difference. First operand 100919 states and 157978 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-11-29 03:32:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:32:02,128 INFO L93 Difference]: Finished difference Result 165167 states and 255804 transitions. [2023-11-29 03:32:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:32:02,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) Word has length 482 [2023-11-29 03:32:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:32:02,251 INFO L225 Difference]: With dead ends: 165167 [2023-11-29 03:32:02,251 INFO L226 Difference]: Without dead ends: 64201 [2023-11-29 03:32:02,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 956 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:32:02,339 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 239 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:32:02,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 958 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:32:02,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64201 states. [2023-11-29 03:32:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64201 to 56523. [2023-11-29 03:32:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56523 states, 46522 states have (on average 1.4942607798460943) internal successors, (69516), 46686 states have internal predecessors, (69516), 8688 states have call successors, (8688), 1312 states have call predecessors, (8688), 1312 states have return successors, (8688), 8524 states have call predecessors, (8688), 8688 states have call successors, (8688) [2023-11-29 03:32:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56523 states to 56523 states and 86892 transitions. [2023-11-29 03:32:07,876 INFO L78 Accepts]: Start accepts. Automaton has 56523 states and 86892 transitions. Word has length 482 [2023-11-29 03:32:07,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:32:07,876 INFO L495 AbstractCegarLoop]: Abstraction has 56523 states and 86892 transitions. [2023-11-29 03:32:07,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 2 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (128), 2 states have call predecessors, (128), 2 states have call successors, (128) [2023-11-29 03:32:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 56523 states and 86892 transitions. [2023-11-29 03:32:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 03:32:07,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:32:07,886 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:32:07,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 03:32:08,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:08,087 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:32:08,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:08,088 INFO L85 PathProgramCache]: Analyzing trace with hash -857955921, now seen corresponding path program 1 times [2023-11-29 03:32:08,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:08,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936675472] [2023-11-29 03:32:08,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:08,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:08,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:32:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452346107] [2023-11-29 03:32:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:08,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:32:08,145 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:32:08,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 03:32:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:08,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:32:08,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:32:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:32:08,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:32:08,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:08,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936675472] [2023-11-29 03:32:08,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:32:08,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452346107] [2023-11-29 03:32:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452346107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:08,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:08,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:32:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396726540] [2023-11-29 03:32:08,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:08,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:32:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:32:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:32:08,613 INFO L87 Difference]: Start difference. First operand 56523 states and 86892 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:32:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:32:13,536 INFO L93 Difference]: Finished difference Result 132207 states and 203464 transitions. [2023-11-29 03:32:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:32:13,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 482 [2023-11-29 03:32:13,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:32:13,654 INFO L225 Difference]: With dead ends: 132207 [2023-11-29 03:32:13,654 INFO L226 Difference]: Without dead ends: 75685 [2023-11-29 03:32:13,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:32:13,710 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 207 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:32:13,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1012 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:32:13,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75685 states. [2023-11-29 03:32:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75685 to 69403. [2023-11-29 03:32:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69403 states, 58362 states have (on average 1.4774682156197525) internal successors, (86228), 58606 states have internal predecessors, (86228), 9488 states have call successors, (9488), 1552 states have call predecessors, (9488), 1552 states have return successors, (9488), 9244 states have call predecessors, (9488), 9488 states have call successors, (9488) [2023-11-29 03:32:19,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69403 states to 69403 states and 105204 transitions. [2023-11-29 03:32:19,470 INFO L78 Accepts]: Start accepts. Automaton has 69403 states and 105204 transitions. Word has length 482 [2023-11-29 03:32:19,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:32:19,470 INFO L495 AbstractCegarLoop]: Abstraction has 69403 states and 105204 transitions. [2023-11-29 03:32:19,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:32:19,471 INFO L276 IsEmpty]: Start isEmpty. Operand 69403 states and 105204 transitions. [2023-11-29 03:32:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:32:19,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:32:19,485 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:32:19,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 03:32:19,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:32:19,685 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:32:19,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1063930604, now seen corresponding path program 1 times [2023-11-29 03:32:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756685739] [2023-11-29 03:32:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:19,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:32:19,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713698654] [2023-11-29 03:32:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:19,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:19,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:32:19,746 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:32:19,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 03:32:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:20,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:32:20,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:32:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:32:20,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:32:20,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:20,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756685739] [2023-11-29 03:32:20,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:32:20,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713698654] [2023-11-29 03:32:20,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713698654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:20,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:20,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:32:20,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593647135] [2023-11-29 03:32:20,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:20,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:32:20,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:20,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:32:20,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:32:20,208 INFO L87 Difference]: Start difference. First operand 69403 states and 105204 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:32:29,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:32:29,046 INFO L93 Difference]: Finished difference Result 167777 states and 252163 transitions. [2023-11-29 03:32:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:32:29,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 483 [2023-11-29 03:32:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:32:29,221 INFO L225 Difference]: With dead ends: 167777 [2023-11-29 03:32:29,221 INFO L226 Difference]: Without dead ends: 98375 [2023-11-29 03:32:29,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:32:29,287 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 734 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:32:29,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1233 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:32:29,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98375 states. [2023-11-29 03:32:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98375 to 44883. [2023-11-29 03:32:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44883 states, 36530 states have (on average 1.4430331234601697) internal successors, (52714), 36578 states have internal predecessors, (52714), 7360 states have call successors, (7360), 992 states have call predecessors, (7360), 992 states have return successors, (7360), 7312 states have call predecessors, (7360), 7360 states have call successors, (7360) [2023-11-29 03:32:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44883 states to 44883 states and 67434 transitions. [2023-11-29 03:32:34,708 INFO L78 Accepts]: Start accepts. Automaton has 44883 states and 67434 transitions. Word has length 483 [2023-11-29 03:32:34,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:32:34,709 INFO L495 AbstractCegarLoop]: Abstraction has 44883 states and 67434 transitions. [2023-11-29 03:32:34,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:32:34,709 INFO L276 IsEmpty]: Start isEmpty. Operand 44883 states and 67434 transitions. [2023-11-29 03:32:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:32:34,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:32:34,717 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:32:34,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 03:32:34,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:32:34,917 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:32:34,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:34,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1891465968, now seen corresponding path program 1 times [2023-11-29 03:32:34,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:34,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773884360] [2023-11-29 03:32:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:34,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:34,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:32:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250107969] [2023-11-29 03:32:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:34,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:34,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:32:34,973 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:32:34,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 03:32:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:35,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:32:35,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:32:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:32:35,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:32:35,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:35,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773884360] [2023-11-29 03:32:35,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:32:35,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250107969] [2023-11-29 03:32:35,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250107969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:32:35,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:32:35,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:32:35,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033337852] [2023-11-29 03:32:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:32:35,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:32:35,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:35,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:32:35,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:32:35,763 INFO L87 Difference]: Start difference. First operand 44883 states and 67434 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:32:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:32:46,083 INFO L93 Difference]: Finished difference Result 125606 states and 188347 transitions. [2023-11-29 03:32:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:32:46,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 483 [2023-11-29 03:32:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:32:46,215 INFO L225 Difference]: With dead ends: 125606 [2023-11-29 03:32:46,215 INFO L226 Difference]: Without dead ends: 80724 [2023-11-29 03:32:46,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:32:46,255 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1570 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:32:46,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 2041 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:32:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80724 states. [2023-11-29 03:32:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80724 to 40659. [2023-11-29 03:32:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40659 states, 33042 states have (on average 1.4333878094546335) internal successors, (47362), 33074 states have internal predecessors, (47362), 6720 states have call successors, (6720), 896 states have call predecessors, (6720), 896 states have return successors, (6720), 6688 states have call predecessors, (6720), 6720 states have call successors, (6720) [2023-11-29 03:32:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40659 states to 40659 states and 60802 transitions. [2023-11-29 03:32:51,509 INFO L78 Accepts]: Start accepts. Automaton has 40659 states and 60802 transitions. Word has length 483 [2023-11-29 03:32:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:32:51,510 INFO L495 AbstractCegarLoop]: Abstraction has 40659 states and 60802 transitions. [2023-11-29 03:32:51,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:32:51,510 INFO L276 IsEmpty]: Start isEmpty. Operand 40659 states and 60802 transitions. [2023-11-29 03:32:51,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:32:51,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:32:51,517 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:32:51,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 03:32:51,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:51,718 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:32:51,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:32:51,719 INFO L85 PathProgramCache]: Analyzing trace with hash 82085882, now seen corresponding path program 1 times [2023-11-29 03:32:51,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:32:51,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869662510] [2023-11-29 03:32:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:51,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:32:51,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:32:51,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708723302] [2023-11-29 03:32:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:32:51,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:32:51,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:32:51,779 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:32:51,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 03:32:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:32:52,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:32:52,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:32:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4557 proven. 75 refuted. 0 times theorem prover too weak. 5028 trivial. 0 not checked. [2023-11-29 03:32:52,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:32:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 132 proven. 75 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-29 03:32:52,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:32:52,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869662510] [2023-11-29 03:32:52,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:32:52,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708723302] [2023-11-29 03:32:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708723302] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:32:52,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:32:52,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 03:32:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688748661] [2023-11-29 03:32:52,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:32:52,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:32:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:32:52,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:32:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:32:52,700 INFO L87 Difference]: Start difference. First operand 40659 states and 60802 transitions. Second operand has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 3 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) [2023-11-29 03:33:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:33:03,365 INFO L93 Difference]: Finished difference Result 124471 states and 184772 transitions. [2023-11-29 03:33:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:33:03,366 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 3 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) Word has length 483 [2023-11-29 03:33:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:33:03,510 INFO L225 Difference]: With dead ends: 124471 [2023-11-29 03:33:03,510 INFO L226 Difference]: Without dead ends: 83813 [2023-11-29 03:33:03,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:33:03,565 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1594 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:33:03,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 2569 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 03:33:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83813 states. [2023-11-29 03:33:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83813 to 41235. [2023-11-29 03:33:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41235 states, 33522 states have (on average 1.4262275520553667) internal successors, (47810), 33554 states have internal predecessors, (47810), 6720 states have call successors, (6720), 992 states have call predecessors, (6720), 992 states have return successors, (6720), 6688 states have call predecessors, (6720), 6720 states have call successors, (6720) [2023-11-29 03:33:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41235 states to 41235 states and 61250 transitions. [2023-11-29 03:33:08,865 INFO L78 Accepts]: Start accepts. Automaton has 41235 states and 61250 transitions. Word has length 483 [2023-11-29 03:33:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:33:08,866 INFO L495 AbstractCegarLoop]: Abstraction has 41235 states and 61250 transitions. [2023-11-29 03:33:08,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 3 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) [2023-11-29 03:33:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 41235 states and 61250 transitions. [2023-11-29 03:33:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:33:08,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:33:08,874 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:33:08,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 03:33:09,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:33:09,075 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:33:09,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:33:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1958568700, now seen corresponding path program 1 times [2023-11-29 03:33:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:33:09,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112796466] [2023-11-29 03:33:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:33:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:33:09,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:33:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352268769] [2023-11-29 03:33:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:33:09,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:33:09,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:33:09,319 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:33:09,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 03:33:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:33:09,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:33:09,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:33:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:33:10,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:33:10,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:33:10,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112796466] [2023-11-29 03:33:10,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:33:10,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352268769] [2023-11-29 03:33:10,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352268769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:33:10,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:33:10,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:33:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089943936] [2023-11-29 03:33:10,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:33:10,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:33:10,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:33:10,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:33:10,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:33:10,193 INFO L87 Difference]: Start difference. First operand 41235 states and 61250 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:33:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:33:18,768 INFO L93 Difference]: Finished difference Result 123703 states and 183748 transitions. [2023-11-29 03:33:18,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:33:18,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 483 [2023-11-29 03:33:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:33:18,911 INFO L225 Difference]: With dead ends: 123703 [2023-11-29 03:33:18,911 INFO L226 Difference]: Without dead ends: 82469 [2023-11-29 03:33:18,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:33:18,964 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 321 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:33:18,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1250 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:33:19,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82469 states. [2023-11-29 03:33:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82469 to 82467. [2023-11-29 03:33:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82467 states, 67042 states have (on average 1.4209898272724562) internal successors, (95266), 67106 states have internal predecessors, (95266), 13440 states have call successors, (13440), 1984 states have call predecessors, (13440), 1984 states have return successors, (13440), 13376 states have call predecessors, (13440), 13440 states have call successors, (13440) [2023-11-29 03:33:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82467 states to 82467 states and 122146 transitions. [2023-11-29 03:33:28,598 INFO L78 Accepts]: Start accepts. Automaton has 82467 states and 122146 transitions. Word has length 483 [2023-11-29 03:33:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:33:28,598 INFO L495 AbstractCegarLoop]: Abstraction has 82467 states and 122146 transitions. [2023-11-29 03:33:28,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:33:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 82467 states and 122146 transitions. [2023-11-29 03:33:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:33:28,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:33:28,611 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:33:28,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 03:33:28,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:33:28,812 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:33:28,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:33:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash -70017410, now seen corresponding path program 1 times [2023-11-29 03:33:28,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:33:28,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604694209] [2023-11-29 03:33:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:33:28,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:33:28,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:33:28,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742170963] [2023-11-29 03:33:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:33:28,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:33:28,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:33:28,868 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:33:28,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 03:33:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:33:29,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:33:29,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:33:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4519 proven. 132 refuted. 0 times theorem prover too weak. 5009 trivial. 0 not checked. [2023-11-29 03:33:30,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:33:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 75 proven. 132 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-29 03:33:30,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:33:30,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604694209] [2023-11-29 03:33:30,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:33:30,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742170963] [2023-11-29 03:33:30,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742170963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:33:30,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:33:30,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 03:33:30,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479611541] [2023-11-29 03:33:30,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:33:30,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:33:30,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:33:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:33:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:33:30,543 INFO L87 Difference]: Start difference. First operand 82467 states and 122146 transitions. Second operand has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-11-29 03:33:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:33:43,398 INFO L93 Difference]: Finished difference Result 241977 states and 361125 transitions. [2023-11-29 03:33:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:33:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) Word has length 483 [2023-11-29 03:33:43,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:33:43,633 INFO L225 Difference]: With dead ends: 241977 [2023-11-29 03:33:43,633 INFO L226 Difference]: Without dead ends: 159511 [2023-11-29 03:33:43,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:33:43,714 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1662 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:33:43,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 3019 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:33:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159511 states. [2023-11-29 03:33:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159511 to 82851. [2023-11-29 03:33:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82851 states, 67330 states have (on average 1.4180008911332245) internal successors, (95474), 67394 states have internal predecessors, (95474), 13440 states have call successors, (13440), 2080 states have call predecessors, (13440), 2080 states have return successors, (13440), 13376 states have call predecessors, (13440), 13440 states have call successors, (13440) [2023-11-29 03:33:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82851 states to 82851 states and 122354 transitions. [2023-11-29 03:33:55,196 INFO L78 Accepts]: Start accepts. Automaton has 82851 states and 122354 transitions. Word has length 483 [2023-11-29 03:33:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:33:55,196 INFO L495 AbstractCegarLoop]: Abstraction has 82851 states and 122354 transitions. [2023-11-29 03:33:55,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.166666666666668) internal successors, (206), 12 states have internal predecessors, (206), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-11-29 03:33:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 82851 states and 122354 transitions. [2023-11-29 03:33:55,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:33:55,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:33:55,209 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:33:55,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 03:33:55,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:33:55,410 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:33:55,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:33:55,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2147354308, now seen corresponding path program 1 times [2023-11-29 03:33:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:33:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943928291] [2023-11-29 03:33:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:33:55,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:33:55,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:33:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612519228] [2023-11-29 03:33:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:33:55,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:33:55,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:33:55,462 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:33:55,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 03:33:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:33:56,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:33:56,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:33:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 5802 proven. 123 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2023-11-29 03:33:56,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:33:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 285 proven. 126 refuted. 0 times theorem prover too weak. 9249 trivial. 0 not checked. [2023-11-29 03:33:56,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:33:56,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943928291] [2023-11-29 03:33:56,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:33:56,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612519228] [2023-11-29 03:33:56,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612519228] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:33:56,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:33:56,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 03:33:56,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909897001] [2023-11-29 03:33:56,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:33:56,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:33:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:33:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:33:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:33:56,605 INFO L87 Difference]: Start difference. First operand 82851 states and 122354 transitions. Second operand has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 5 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 5 states have call predecessors, (104), 5 states have call successors, (104) [2023-11-29 03:34:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:34:08,169 INFO L93 Difference]: Finished difference Result 170501 states and 248931 transitions. [2023-11-29 03:34:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:34:08,169 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 5 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 5 states have call predecessors, (104), 5 states have call successors, (104) Word has length 483 [2023-11-29 03:34:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:34:08,327 INFO L225 Difference]: With dead ends: 170501 [2023-11-29 03:34:08,327 INFO L226 Difference]: Without dead ends: 87651 [2023-11-29 03:34:08,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 953 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:34:08,410 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 841 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:34:08,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1125 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:34:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87651 states. [2023-11-29 03:34:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87651 to 84003. [2023-11-29 03:34:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84003 states, 68546 states have (on average 1.4040498351472004) internal successors, (96242), 68610 states have internal predecessors, (96242), 12864 states have call successors, (12864), 2592 states have call predecessors, (12864), 2592 states have return successors, (12864), 12800 states have call predecessors, (12864), 12864 states have call successors, (12864) [2023-11-29 03:34:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84003 states to 84003 states and 121970 transitions. [2023-11-29 03:34:18,946 INFO L78 Accepts]: Start accepts. Automaton has 84003 states and 121970 transitions. Word has length 483 [2023-11-29 03:34:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:34:18,947 INFO L495 AbstractCegarLoop]: Abstraction has 84003 states and 121970 transitions. [2023-11-29 03:34:18,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 5 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 5 states have call predecessors, (104), 5 states have call successors, (104) [2023-11-29 03:34:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 84003 states and 121970 transitions. [2023-11-29 03:34:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:34:18,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:34:18,959 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:34:18,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 03:34:19,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:34:19,160 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:34:19,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:34:19,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1561336766, now seen corresponding path program 1 times [2023-11-29 03:34:19,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:34:19,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609027704] [2023-11-29 03:34:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:34:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:34:19,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:34:19,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602675282] [2023-11-29 03:34:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:34:19,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:34:19,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:34:19,219 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:34:19,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 03:34:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:34:19,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:34:19,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:34:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 4654 proven. 270 refuted. 0 times theorem prover too weak. 4736 trivial. 0 not checked. [2023-11-29 03:34:20,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:34:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 138 proven. 273 refuted. 0 times theorem prover too weak. 9249 trivial. 0 not checked. [2023-11-29 03:34:21,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:34:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609027704] [2023-11-29 03:34:21,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:34:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602675282] [2023-11-29 03:34:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602675282] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:34:21,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:34:21,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-29 03:34:21,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836222033] [2023-11-29 03:34:21,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:34:21,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:34:21,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:34:21,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:34:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:34:21,395 INFO L87 Difference]: Start difference. First operand 84003 states and 121970 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (117), 3 states have call predecessors, (117), 7 states have return successors, (118), 5 states have call predecessors, (118), 5 states have call successors, (118) [2023-11-29 03:34:46,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:34:46,136 INFO L93 Difference]: Finished difference Result 553753 states and 833037 transitions. [2023-11-29 03:34:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 03:34:46,137 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (117), 3 states have call predecessors, (117), 7 states have return successors, (118), 5 states have call predecessors, (118), 5 states have call successors, (118) Word has length 483 [2023-11-29 03:34:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:34:47,057 INFO L225 Difference]: With dead ends: 553753 [2023-11-29 03:34:47,057 INFO L226 Difference]: Without dead ends: 469751 [2023-11-29 03:34:47,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1342, Invalid=3214, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 03:34:47,164 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 3744 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:34:47,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3771 Valid, 3205 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 03:34:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469751 states. [2023-11-29 03:35:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469751 to 297187. [2023-11-29 03:35:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297187 states, 278082 states have (on average 1.481757179536971) internal successors, (412050), 278914 states have internal predecessors, (412050), 15168 states have call successors, (15168), 3936 states have call predecessors, (15168), 3936 states have return successors, (15168), 14336 states have call predecessors, (15168), 15168 states have call successors, (15168) [2023-11-29 03:35:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297187 states to 297187 states and 442386 transitions. [2023-11-29 03:35:06,332 INFO L78 Accepts]: Start accepts. Automaton has 297187 states and 442386 transitions. Word has length 483 [2023-11-29 03:35:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:35:06,333 INFO L495 AbstractCegarLoop]: Abstraction has 297187 states and 442386 transitions. [2023-11-29 03:35:06,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (117), 3 states have call predecessors, (117), 7 states have return successors, (118), 5 states have call predecessors, (118), 5 states have call successors, (118) [2023-11-29 03:35:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 297187 states and 442386 transitions. [2023-11-29 03:35:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:35:06,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:35:06,684 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:35:06,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 03:35:06,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:35:06,885 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:35:06,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:35:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1894596868, now seen corresponding path program 1 times [2023-11-29 03:35:06,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:35:06,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603004414] [2023-11-29 03:35:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:35:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:35:06,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:35:06,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2161551] [2023-11-29 03:35:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:35:06,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:35:06,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:35:06,961 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:35:06,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 03:35:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:35:07,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:35:07,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:35:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 3177 proven. 165 refuted. 0 times theorem prover too weak. 6318 trivial. 0 not checked. [2023-11-29 03:35:09,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:35:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 42 proven. 165 refuted. 0 times theorem prover too weak. 9453 trivial. 0 not checked. [2023-11-29 03:35:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:35:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603004414] [2023-11-29 03:35:10,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:35:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2161551] [2023-11-29 03:35:10,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2161551] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:35:10,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:35:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2023-11-29 03:35:10,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006796189] [2023-11-29 03:35:10,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:35:10,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:35:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:35:10,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:35:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:35:10,374 INFO L87 Difference]: Start difference. First operand 297187 states and 442386 transitions. Second operand has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-11-29 03:36:21,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:21,701 INFO L93 Difference]: Finished difference Result 2943837 states and 4467575 transitions. [2023-11-29 03:36:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 03:36:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) Word has length 483 [2023-11-29 03:36:21,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:26,181 INFO L225 Difference]: With dead ends: 2943837 [2023-11-29 03:36:26,181 INFO L226 Difference]: Without dead ends: 2646651 [2023-11-29 03:36:26,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=776, Invalid=1876, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 03:36:26,732 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 6133 mSDsluCounter, 6594 mSDsCounter, 0 mSdLazyCounter, 3643 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6202 SdHoareTripleChecker+Valid, 7036 SdHoareTripleChecker+Invalid, 4570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 3643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:26,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6202 Valid, 7036 Invalid, 4570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 3643 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 03:36:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646651 states. [2023-11-29 03:37:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646651 to 1006371. [2023-11-29 03:37:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006371 states, 951266 states have (on average 1.4785706626747934) internal successors, (1406514), 954306 states have internal predecessors, (1406514), 42912 states have call successors, (42912), 12192 states have call predecessors, (42912), 12192 states have return successors, (42912), 39872 states have call predecessors, (42912), 42912 states have call successors, (42912) [2023-11-29 03:37:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006371 states to 1006371 states and 1492338 transitions. [2023-11-29 03:37:39,619 INFO L78 Accepts]: Start accepts. Automaton has 1006371 states and 1492338 transitions. Word has length 483 [2023-11-29 03:37:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:39,620 INFO L495 AbstractCegarLoop]: Abstraction has 1006371 states and 1492338 transitions. [2023-11-29 03:37:39,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-11-29 03:37:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1006371 states and 1492338 transitions. [2023-11-29 03:37:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 03:37:39,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:39,756 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:39,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 03:37:39,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 03:37:39,957 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:39,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1018577862, now seen corresponding path program 1 times [2023-11-29 03:37:39,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:39,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021429384] [2023-11-29 03:37:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:39,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:40,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:37:40,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370976379] [2023-11-29 03:37:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:40,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:40,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:40,011 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:40,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e7dee0-d2b5-4235-90c3-06ad1dbe896e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 03:37:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:40,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:37:40,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2023-11-29 03:37:40,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:37:40,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021429384] [2023-11-29 03:37:40,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:37:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370976379] [2023-11-29 03:37:40,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370976379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:40,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:40,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:37:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258499643] [2023-11-29 03:37:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:40,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:40,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:40,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:40,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:40,935 INFO L87 Difference]: Start difference. First operand 1006371 states and 1492338 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2023-11-29 03:38:39,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:39,389 INFO L93 Difference]: Finished difference Result 2139704 states and 3180075 transitions. [2023-11-29 03:38:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:38:39,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 483 [2023-11-29 03:38:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:41,385 INFO L225 Difference]: With dead ends: 2139704 [2023-11-29 03:38:41,385 INFO L226 Difference]: Without dead ends: 1133334 [2023-11-29 03:38:41,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:38:41,856 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 302 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:41,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1237 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]