./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/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_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/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_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/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 48e85989ab1491232146c3f83e5190897575ef5dfc7883637a27a3a165441b73 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:54:52,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:54:52,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:54:52,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:54:52,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:54:52,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:54:52,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:54:52,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:54:52,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:54:52,671 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:54:52,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:54:52,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:54:52,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:54:52,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:54:52,674 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:54:52,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:54:52,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:54:52,676 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:54:52,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:54:52,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:54:52,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:54:52,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:54:52,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:54:52,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:54:52,679 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:54:52,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:54:52,680 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:54:52,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:54:52,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:54:52,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:54:52,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:54:52,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:54:52,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:54:52,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:54:52,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:54:52,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:54:52,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:54:52,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:54:52,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:54:52,684 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:54:52,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:54:52,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:54:52,684 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_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e85989ab1491232146c3f83e5190897575ef5dfc7883637a27a3a165441b73 [2023-11-29 01:54:52,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:54:52,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:54:52,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:54:52,921 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:54:52,921 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:54:52,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-92.i [2023-11-29 01:54:55,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:54:55,939 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:54:55,939 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-92.i [2023-11-29 01:54:55,955 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/data/17b8ed499/4c725dc9faa64e99963f6afc0bbe05cb/FLAG39a2fceeb [2023-11-29 01:54:55,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/data/17b8ed499/4c725dc9faa64e99963f6afc0bbe05cb [2023-11-29 01:54:55,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:54:55,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:54:55,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:54:55,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:54:55,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:54:55,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:54:55" (1/1) ... [2023-11-29 01:54:55,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80dc2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:55, skipping insertion in model container [2023-11-29 01:54:55,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:54:55" (1/1) ... [2023-11-29 01:54:56,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:54:56,189 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_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-92.i[916,929] [2023-11-29 01:54:56,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:54:56,370 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:54:56,383 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_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-92.i[916,929] [2023-11-29 01:54:56,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:54:56,488 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:54:56,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56 WrapperNode [2023-11-29 01:54:56,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:54:56,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:54:56,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:54:56,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:54:56,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,607 INFO L138 Inliner]: procedures = 26, calls = 116, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 850 [2023-11-29 01:54:56,607 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:54:56,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:54:56,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:54:56,608 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:54:56,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,730 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 01:54:56,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,799 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:54:56,800 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:54:56,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:54:56,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:54:56,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (1/1) ... [2023-11-29 01:54:56,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:54:56,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:56,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:54:56,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:54:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:54:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:54:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:54:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:54:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:54:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:54:57,020 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:54:57,022 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:54:58,034 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:54:58,092 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:54:58,092 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:54:58,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:54:58 BoogieIcfgContainer [2023-11-29 01:54:58,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:54:58,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:54:58,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:54:58,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:54:58,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:54:55" (1/3) ... [2023-11-29 01:54:58,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329ed34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:54:58, skipping insertion in model container [2023-11-29 01:54:58,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:54:56" (2/3) ... [2023-11-29 01:54:58,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329ed34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:54:58, skipping insertion in model container [2023-11-29 01:54:58,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:54:58" (3/3) ... [2023-11-29 01:54:58,101 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-92.i [2023-11-29 01:54:58,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:54:58,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:54:58,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:54:58,174 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;@7c81da1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:54:58,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:54:58,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 226 states have (on average 1.676991150442478) internal successors, (379), 227 states have internal predecessors, (379), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 01:54:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-29 01:54:58,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:58,218 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:58,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:58,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:58,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1878872529, now seen corresponding path program 1 times [2023-11-29 01:54:58,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:58,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591895591] [2023-11-29 01:54:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:58,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:58,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:58,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591895591] [2023-11-29 01:54:58,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:54:58,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63966231] [2023-11-29 01:54:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:58,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:58,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:58,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:58,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:54:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:58,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:54:59,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 20808 trivial. 0 not checked. [2023-11-29 01:54:59,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:54:59,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63966231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:59,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:54:59,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20018048] [2023-11-29 01:54:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:59,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:54:59,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:54:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:54:59,153 INFO L87 Difference]: Start difference. First operand has 332 states, 226 states have (on average 1.676991150442478) internal successors, (379), 227 states have internal predecessors, (379), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-11-29 01:54:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:59,234 INFO L93 Difference]: Finished difference Result 661 states and 1271 transitions. [2023-11-29 01:54:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:54:59,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) Word has length 656 [2023-11-29 01:54:59,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:59,250 INFO L225 Difference]: With dead ends: 661 [2023-11-29 01:54:59,250 INFO L226 Difference]: Without dead ends: 330 [2023-11-29 01:54:59,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 655 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 01:54:59,261 INFO L413 NwaCegarLoop]: 576 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, 576 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 01:54:59,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:54:59,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-11-29 01:54:59,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2023-11-29 01:54:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 225 states have (on average 1.6577777777777778) internal successors, (373), 225 states have internal predecessors, (373), 103 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 01:54:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 579 transitions. [2023-11-29 01:54:59,358 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 579 transitions. Word has length 656 [2023-11-29 01:54:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:59,359 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 579 transitions. [2023-11-29 01:54:59,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (103), 2 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 2 states have call successors, (103) [2023-11-29 01:54:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 579 transitions. [2023-11-29 01:54:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-29 01:54:59,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:59,380 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:59,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:54:59,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:54:59,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:59,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash -204189247, now seen corresponding path program 1 times [2023-11-29 01:54:59,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:59,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713544587] [2023-11-29 01:54:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:59,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:59,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:54:59,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816582424] [2023-11-29 01:54:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:59,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:59,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:59,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:59,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:55:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:00,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:55:00,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:00,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:00,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713544587] [2023-11-29 01:55:00,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816582424] [2023-11-29 01:55:00,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816582424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:00,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:00,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:00,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213582701] [2023-11-29 01:55:00,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:00,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:00,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:00,226 INFO L87 Difference]: Start difference. First operand 330 states and 579 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:00,335 INFO L93 Difference]: Finished difference Result 861 states and 1521 transitions. [2023-11-29 01:55:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:00,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 656 [2023-11-29 01:55:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:00,343 INFO L225 Difference]: With dead ends: 861 [2023-11-29 01:55:00,343 INFO L226 Difference]: Without dead ends: 532 [2023-11-29 01:55:00,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 654 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 01:55:00,346 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 369 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:00,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1372 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:55:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-11-29 01:55:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 529. [2023-11-29 01:55:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 393 states have (on average 1.6997455470737914) internal successors, (668), 394 states have internal predecessors, (668), 133 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2023-11-29 01:55:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 934 transitions. [2023-11-29 01:55:00,427 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 934 transitions. Word has length 656 [2023-11-29 01:55:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:00,430 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 934 transitions. [2023-11-29 01:55:00,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 934 transitions. [2023-11-29 01:55:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 01:55:00,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:00,449 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:00,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:55:00,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:00,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:00,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 109733193, now seen corresponding path program 1 times [2023-11-29 01:55:00,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267513046] [2023-11-29 01:55:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:00,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:00,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001751694] [2023-11-29 01:55:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:00,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:00,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:00,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:00,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:55:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:01,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:55:01,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:01,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:01,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267513046] [2023-11-29 01:55:01,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001751694] [2023-11-29 01:55:01,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001751694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:01,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:01,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:01,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979947991] [2023-11-29 01:55:01,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:01,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:01,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:01,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:01,242 INFO L87 Difference]: Start difference. First operand 529 states and 934 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:01,328 INFO L93 Difference]: Finished difference Result 1428 states and 2520 transitions. [2023-11-29 01:55:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 01:55:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:01,340 INFO L225 Difference]: With dead ends: 1428 [2023-11-29 01:55:01,340 INFO L226 Difference]: Without dead ends: 900 [2023-11-29 01:55:01,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 655 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 01:55:01,344 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 344 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:01,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1272 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2023-11-29 01:55:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 897. [2023-11-29 01:55:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 674 states have (on average 1.695845697329377) internal successors, (1143), 677 states have internal predecessors, (1143), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 215 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 01:55:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1579 transitions. [2023-11-29 01:55:01,455 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1579 transitions. Word has length 657 [2023-11-29 01:55:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:01,456 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1579 transitions. [2023-11-29 01:55:01,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1579 transitions. [2023-11-29 01:55:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 01:55:01,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:01,465 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:01,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:55:01,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:01,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:01,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 164126091, now seen corresponding path program 1 times [2023-11-29 01:55:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:01,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277183064] [2023-11-29 01:55:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:01,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:01,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816148779] [2023-11-29 01:55:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:01,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:01,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:01,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:01,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:55:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:02,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:55:02,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:02,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277183064] [2023-11-29 01:55:02,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816148779] [2023-11-29 01:55:02,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816148779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:02,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:02,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284472664] [2023-11-29 01:55:02,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:02,193 INFO L87 Difference]: Start difference. First operand 897 states and 1579 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:02,316 INFO L93 Difference]: Finished difference Result 2657 states and 4675 transitions. [2023-11-29 01:55:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:02,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 01:55:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:02,331 INFO L225 Difference]: With dead ends: 2657 [2023-11-29 01:55:02,331 INFO L226 Difference]: Without dead ends: 1761 [2023-11-29 01:55:02,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 655 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 01:55:02,335 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 551 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:02,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1490 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2023-11-29 01:55:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1183. [2023-11-29 01:55:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 960 states have (on average 1.7572916666666667) internal successors, (1687), 963 states have internal predecessors, (1687), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 215 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 01:55:02,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2123 transitions. [2023-11-29 01:55:02,469 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2123 transitions. Word has length 657 [2023-11-29 01:55:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:02,470 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 2123 transitions. [2023-11-29 01:55:02,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:02,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2123 transitions. [2023-11-29 01:55:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 01:55:02,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:02,479 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:02,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:55:02,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:02,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:02,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:02,681 INFO L85 PathProgramCache]: Analyzing trace with hash -416475317, now seen corresponding path program 1 times [2023-11-29 01:55:02,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:02,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671752368] [2023-11-29 01:55:02,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:02,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:02,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:02,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59333648] [2023-11-29 01:55:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:02,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:02,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:02,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:02,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:55:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:03,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:55:03,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:03,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:03,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:03,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671752368] [2023-11-29 01:55:03,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:03,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59333648] [2023-11-29 01:55:03,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59333648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:03,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:03,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281717129] [2023-11-29 01:55:03,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:03,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:03,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:03,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:03,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:03,259 INFO L87 Difference]: Start difference. First operand 1183 states and 2123 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:03,377 INFO L93 Difference]: Finished difference Result 3331 states and 5959 transitions. [2023-11-29 01:55:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:03,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 01:55:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:03,394 INFO L225 Difference]: With dead ends: 3331 [2023-11-29 01:55:03,395 INFO L226 Difference]: Without dead ends: 2149 [2023-11-29 01:55:03,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 655 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 01:55:03,400 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 509 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:03,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1139 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-11-29 01:55:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1471. [2023-11-29 01:55:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1248 states have (on average 1.797275641025641) internal successors, (2243), 1251 states have internal predecessors, (2243), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 215 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 01:55:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2679 transitions. [2023-11-29 01:55:03,540 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2679 transitions. Word has length 657 [2023-11-29 01:55:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:03,541 INFO L495 AbstractCegarLoop]: Abstraction has 1471 states and 2679 transitions. [2023-11-29 01:55:03,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2679 transitions. [2023-11-29 01:55:03,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 01:55:03,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:03,551 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:03,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:55:03,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:03,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:03,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash -354435703, now seen corresponding path program 1 times [2023-11-29 01:55:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100257024] [2023-11-29 01:55:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:03,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:03,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:03,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817642511] [2023-11-29 01:55:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:03,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:03,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:03,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:03,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:55:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:04,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:55:04,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:04,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:04,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:04,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100257024] [2023-11-29 01:55:04,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:04,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817642511] [2023-11-29 01:55:04,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817642511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:04,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:04,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217815941] [2023-11-29 01:55:04,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:04,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:55:04,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:04,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:55:04,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:55:04,284 INFO L87 Difference]: Start difference. First operand 1471 states and 2679 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:04,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:04,409 INFO L93 Difference]: Finished difference Result 3976 states and 7220 transitions. [2023-11-29 01:55:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:55:04,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 01:55:04,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:04,424 INFO L225 Difference]: With dead ends: 3976 [2023-11-29 01:55:04,424 INFO L226 Difference]: Without dead ends: 2506 [2023-11-29 01:55:04,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 655 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 01:55:04,428 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 332 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:04,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1140 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:55:04,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2023-11-29 01:55:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2503. [2023-11-29 01:55:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2085 states have (on average 1.773621103117506) internal successors, (3698), 2092 states have internal predecessors, (3698), 409 states have call successors, (409), 8 states have call predecessors, (409), 8 states have return successors, (409), 402 states have call predecessors, (409), 409 states have call successors, (409) [2023-11-29 01:55:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4516 transitions. [2023-11-29 01:55:04,548 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4516 transitions. Word has length 657 [2023-11-29 01:55:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:04,549 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4516 transitions. [2023-11-29 01:55:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4516 transitions. [2023-11-29 01:55:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-29 01:55:04,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:04,557 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:04,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:55:04,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:55:04,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:04,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:04,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1726243001, now seen corresponding path program 1 times [2023-11-29 01:55:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32680761] [2023-11-29 01:55:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:04,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:04,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:04,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821498944] [2023-11-29 01:55:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:04,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:04,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:04,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:04,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:55:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:05,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:55:05,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:06,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:06,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:06,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32680761] [2023-11-29 01:55:06,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:06,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821498944] [2023-11-29 01:55:06,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821498944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:06,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:06,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:06,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308864515] [2023-11-29 01:55:06,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:06,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:55:06,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:06,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:55:06,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:55:06,927 INFO L87 Difference]: Start difference. First operand 2503 states and 4516 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:07,487 INFO L93 Difference]: Finished difference Result 8065 states and 14569 transitions. [2023-11-29 01:55:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:55:07,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 657 [2023-11-29 01:55:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:07,527 INFO L225 Difference]: With dead ends: 8065 [2023-11-29 01:55:07,528 INFO L226 Difference]: Without dead ends: 5563 [2023-11-29 01:55:07,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:55:07,537 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 1099 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:07,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1631 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:55:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2023-11-29 01:55:07,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5551. [2023-11-29 01:55:07,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 4687 states have (on average 1.7746959675698741) internal successors, (8318), 4700 states have internal predecessors, (8318), 845 states have call successors, (845), 18 states have call predecessors, (845), 18 states have return successors, (845), 832 states have call predecessors, (845), 845 states have call successors, (845) [2023-11-29 01:55:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 10008 transitions. [2023-11-29 01:55:08,011 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 10008 transitions. Word has length 657 [2023-11-29 01:55:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:08,013 INFO L495 AbstractCegarLoop]: Abstraction has 5551 states and 10008 transitions. [2023-11-29 01:55:08,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 10008 transitions. [2023-11-29 01:55:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 01:55:08,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:08,025 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:08,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:55:08,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 01:55:08,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:08,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1332067754, now seen corresponding path program 1 times [2023-11-29 01:55:08,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:08,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875216183] [2023-11-29 01:55:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:08,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:08,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:08,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82947469] [2023-11-29 01:55:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:08,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:08,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:08,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:08,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:55:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:08,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:55:08,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:10,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:10,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:10,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875216183] [2023-11-29 01:55:10,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:10,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82947469] [2023-11-29 01:55:10,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82947469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:10,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:10,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:55:10,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786335542] [2023-11-29 01:55:10,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:10,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:55:10,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:55:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:55:10,318 INFO L87 Difference]: Start difference. First operand 5551 states and 10008 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:11,057 INFO L93 Difference]: Finished difference Result 19153 states and 34533 transitions. [2023-11-29 01:55:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:55:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 658 [2023-11-29 01:55:11,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:11,130 INFO L225 Difference]: With dead ends: 19153 [2023-11-29 01:55:11,131 INFO L226 Difference]: Without dead ends: 13603 [2023-11-29 01:55:11,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:55:11,145 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1059 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:11,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1509 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:55:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13603 states. [2023-11-29 01:55:12,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13603 to 13583. [2023-11-29 01:55:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13583 states, 11439 states have (on average 1.7720080426610718) internal successors, (20270), 11472 states have internal predecessors, (20270), 2099 states have call successors, (2099), 44 states have call predecessors, (2099), 44 states have return successors, (2099), 2066 states have call predecessors, (2099), 2099 states have call successors, (2099) [2023-11-29 01:55:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13583 states to 13583 states and 24468 transitions. [2023-11-29 01:55:12,124 INFO L78 Accepts]: Start accepts. Automaton has 13583 states and 24468 transitions. Word has length 658 [2023-11-29 01:55:12,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:12,125 INFO L495 AbstractCegarLoop]: Abstraction has 13583 states and 24468 transitions. [2023-11-29 01:55:12,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 13583 states and 24468 transitions. [2023-11-29 01:55:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 01:55:12,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:12,143 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:12,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:55:12,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:12,345 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:12,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash 514419304, now seen corresponding path program 1 times [2023-11-29 01:55:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795379958] [2023-11-29 01:55:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:12,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:12,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:12,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069085106] [2023-11-29 01:55:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:12,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:12,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:12,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:12,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:55:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:12,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:55:12,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:12,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:12,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:12,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795379958] [2023-11-29 01:55:12,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:12,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069085106] [2023-11-29 01:55:12,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069085106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:12,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:12,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:55:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165803781] [2023-11-29 01:55:12,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:12,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:55:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:55:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:55:12,807 INFO L87 Difference]: Start difference. First operand 13583 states and 24468 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:13,708 INFO L93 Difference]: Finished difference Result 27650 states and 49423 transitions. [2023-11-29 01:55:13,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:55:13,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 658 [2023-11-29 01:55:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:13,742 INFO L225 Difference]: With dead ends: 27650 [2023-11-29 01:55:13,742 INFO L226 Difference]: Without dead ends: 14068 [2023-11-29 01:55:13,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 656 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 01:55:13,760 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 750 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:13,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1156 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:55:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14068 states. [2023-11-29 01:55:14,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14068 to 9383. [2023-11-29 01:55:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9383 states, 7821 states have (on average 1.7534842091804117) internal successors, (13714), 7842 states have internal predecessors, (13714), 1526 states have call successors, (1526), 35 states have call predecessors, (1526), 35 states have return successors, (1526), 1505 states have call predecessors, (1526), 1526 states have call successors, (1526) [2023-11-29 01:55:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9383 states to 9383 states and 16766 transitions. [2023-11-29 01:55:14,654 INFO L78 Accepts]: Start accepts. Automaton has 9383 states and 16766 transitions. Word has length 658 [2023-11-29 01:55:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:14,655 INFO L495 AbstractCegarLoop]: Abstraction has 9383 states and 16766 transitions. [2023-11-29 01:55:14,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:14,655 INFO L276 IsEmpty]: Start isEmpty. Operand 9383 states and 16766 transitions. [2023-11-29 01:55:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 01:55:14,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:14,664 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:14,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:55:14,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:14,865 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:14,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -726433262, now seen corresponding path program 1 times [2023-11-29 01:55:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265125174] [2023-11-29 01:55:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:14,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98356952] [2023-11-29 01:55:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:14,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:14,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:14,933 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:14,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:55:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:15,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:55:15,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:16,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:16,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:16,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265125174] [2023-11-29 01:55:16,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:16,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98356952] [2023-11-29 01:55:16,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98356952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:16,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:16,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:55:16,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669403724] [2023-11-29 01:55:16,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:16,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:55:16,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:16,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:55:16,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:55:16,135 INFO L87 Difference]: Start difference. First operand 9383 states and 16766 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:17,912 INFO L93 Difference]: Finished difference Result 25775 states and 45711 transitions. [2023-11-29 01:55:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:55:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 658 [2023-11-29 01:55:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:17,958 INFO L225 Difference]: With dead ends: 25775 [2023-11-29 01:55:17,958 INFO L226 Difference]: Without dead ends: 16393 [2023-11-29 01:55:17,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:55:17,981 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1608 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:17,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 2353 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:55:18,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16393 states. [2023-11-29 01:55:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16393 to 14123. [2023-11-29 01:55:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14123 states, 11639 states have (on average 1.7307328808316866) internal successors, (20144), 11680 states have internal predecessors, (20144), 2420 states have call successors, (2420), 63 states have call predecessors, (2420), 63 states have return successors, (2420), 2379 states have call predecessors, (2420), 2420 states have call successors, (2420) [2023-11-29 01:55:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14123 states to 14123 states and 24984 transitions. [2023-11-29 01:55:19,141 INFO L78 Accepts]: Start accepts. Automaton has 14123 states and 24984 transitions. Word has length 658 [2023-11-29 01:55:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:19,142 INFO L495 AbstractCegarLoop]: Abstraction has 14123 states and 24984 transitions. [2023-11-29 01:55:19,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:19,142 INFO L276 IsEmpty]: Start isEmpty. Operand 14123 states and 24984 transitions. [2023-11-29 01:55:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 01:55:19,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:19,159 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:19,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:55:19,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:55:19,360 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:19,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1324550736, now seen corresponding path program 1 times [2023-11-29 01:55:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:19,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090356485] [2023-11-29 01:55:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:19,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:19,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:19,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277046172] [2023-11-29 01:55:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:19,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:19,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:19,430 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:19,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:55:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:19,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:55:19,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:21,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:21,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090356485] [2023-11-29 01:55:21,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277046172] [2023-11-29 01:55:21,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277046172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:21,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:21,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:55:21,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753763868] [2023-11-29 01:55:21,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:21,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:55:21,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:21,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:55:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:55:21,865 INFO L87 Difference]: Start difference. First operand 14123 states and 24984 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:24,941 INFO L93 Difference]: Finished difference Result 69070 states and 122190 transitions. [2023-11-29 01:55:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:55:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 658 [2023-11-29 01:55:24,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:25,041 INFO L225 Difference]: With dead ends: 69070 [2023-11-29 01:55:25,041 INFO L226 Difference]: Without dead ends: 54948 [2023-11-29 01:55:25,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:55:25,076 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 1241 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:25,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 3052 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:55:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54948 states. [2023-11-29 01:55:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54948 to 48739. [2023-11-29 01:55:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48739 states, 42668 states have (on average 1.7622105559201275) internal successors, (75190), 42798 states have internal predecessors, (75190), 5896 states have call successors, (5896), 174 states have call predecessors, (5896), 174 states have return successors, (5896), 5766 states have call predecessors, (5896), 5896 states have call successors, (5896) [2023-11-29 01:55:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48739 states to 48739 states and 86982 transitions. [2023-11-29 01:55:27,444 INFO L78 Accepts]: Start accepts. Automaton has 48739 states and 86982 transitions. Word has length 658 [2023-11-29 01:55:27,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:27,445 INFO L495 AbstractCegarLoop]: Abstraction has 48739 states and 86982 transitions. [2023-11-29 01:55:27,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:27,445 INFO L276 IsEmpty]: Start isEmpty. Operand 48739 states and 86982 transitions. [2023-11-29 01:55:27,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-29 01:55:27,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:27,474 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:27,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:55:27,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:27,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:27,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash -480887598, now seen corresponding path program 1 times [2023-11-29 01:55:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:27,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646489132] [2023-11-29 01:55:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:27,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:27,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140761875] [2023-11-29 01:55:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:27,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:27,743 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:27,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:55:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:28,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:55:28,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:55:29,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:55:29,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:29,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646489132] [2023-11-29 01:55:29,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:29,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140761875] [2023-11-29 01:55:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140761875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:29,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:29,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:55:29,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57771273] [2023-11-29 01:55:29,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:29,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:55:29,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:29,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:55:29,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:55:29,037 INFO L87 Difference]: Start difference. First operand 48739 states and 86982 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:33,427 INFO L93 Difference]: Finished difference Result 190013 states and 339797 transitions. [2023-11-29 01:55:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:55:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 658 [2023-11-29 01:55:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:33,705 INFO L225 Difference]: With dead ends: 190013 [2023-11-29 01:55:33,705 INFO L226 Difference]: Without dead ends: 141275 [2023-11-29 01:55:33,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:55:33,763 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 806 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:33,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2181 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:55:33,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141275 states. [2023-11-29 01:55:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141275 to 134599. [2023-11-29 01:55:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134599 states, 121354 states have (on average 1.7799990111574402) internal successors, (216010), 121662 states have internal predecessors, (216010), 12848 states have call successors, (12848), 396 states have call predecessors, (12848), 396 states have return successors, (12848), 12540 states have call predecessors, (12848), 12848 states have call successors, (12848) [2023-11-29 01:55:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134599 states to 134599 states and 241706 transitions. [2023-11-29 01:55:39,901 INFO L78 Accepts]: Start accepts. Automaton has 134599 states and 241706 transitions. Word has length 658 [2023-11-29 01:55:39,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:39,902 INFO L495 AbstractCegarLoop]: Abstraction has 134599 states and 241706 transitions. [2023-11-29 01:55:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:55:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 134599 states and 241706 transitions. [2023-11-29 01:55:39,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-29 01:55:39,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:39,951 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:39,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 01:55:40,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:40,152 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:40,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1278976075, now seen corresponding path program 1 times [2023-11-29 01:55:40,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:40,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144014995] [2023-11-29 01:55:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:40,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:40,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481592015] [2023-11-29 01:55:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:40,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:40,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:40,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:40,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:55:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:40,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:55:40,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10452 proven. 171 refuted. 0 times theorem prover too weak. 10389 trivial. 0 not checked. [2023-11-29 01:55:41,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 135 proven. 171 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 01:55:41,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:41,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144014995] [2023-11-29 01:55:41,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:41,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481592015] [2023-11-29 01:55:41,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481592015] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:55:41,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:55:41,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 01:55:41,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273366290] [2023-11-29 01:55:41,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:55:41,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:55:41,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:41,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:55:41,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:55:41,613 INFO L87 Difference]: Start difference. First operand 134599 states and 241706 transitions. Second operand has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 3 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 3 states have call predecessors, (161), 3 states have call successors, (161) [2023-11-29 01:55:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:51,202 INFO L93 Difference]: Finished difference Result 406275 states and 727372 transitions. [2023-11-29 01:55:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:55:51,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 3 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 3 states have call predecessors, (161), 3 states have call successors, (161) Word has length 659 [2023-11-29 01:55:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:52,044 INFO L225 Difference]: With dead ends: 406275 [2023-11-29 01:55:52,044 INFO L226 Difference]: Without dead ends: 271677 [2023-11-29 01:55:52,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1310 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:55:52,180 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1945 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:52,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1947 Valid, 2035 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:55:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271677 states. [2023-11-29 01:56:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271677 to 135047. [2023-11-29 01:56:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135047 states, 121690 states have (on average 1.76532171912236) internal successors, (214822), 121998 states have internal predecessors, (214822), 12848 states have call successors, (12848), 508 states have call predecessors, (12848), 508 states have return successors, (12848), 12540 states have call predecessors, (12848), 12848 states have call successors, (12848) [2023-11-29 01:56:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135047 states to 135047 states and 240518 transitions. [2023-11-29 01:56:00,914 INFO L78 Accepts]: Start accepts. Automaton has 135047 states and 240518 transitions. Word has length 659 [2023-11-29 01:56:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:00,915 INFO L495 AbstractCegarLoop]: Abstraction has 135047 states and 240518 transitions. [2023-11-29 01:56:00,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 3 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 3 states have call predecessors, (161), 3 states have call successors, (161) [2023-11-29 01:56:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 135047 states and 240518 transitions. [2023-11-29 01:56:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-29 01:56:01,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:01,103 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:01,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:56:01,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:56:01,304 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:01,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:01,305 INFO L85 PathProgramCache]: Analyzing trace with hash -589982009, now seen corresponding path program 1 times [2023-11-29 01:56:01,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:01,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930507180] [2023-11-29 01:56:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:01,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:01,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:56:01,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244051788] [2023-11-29 01:56:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:01,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:56:01,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:56:01,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:56:01,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:56:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:01,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:56:01,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:56:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 8886 proven. 90 refuted. 0 times theorem prover too weak. 12036 trivial. 0 not checked. [2023-11-29 01:56:02,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:56:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 216 proven. 90 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 01:56:02,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:02,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930507180] [2023-11-29 01:56:02,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:56:02,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244051788] [2023-11-29 01:56:02,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244051788] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:56:02,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:56:02,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 01:56:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755103481] [2023-11-29 01:56:02,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:56:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:56:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:56:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:56:02,312 INFO L87 Difference]: Start difference. First operand 135047 states and 240518 transitions. Second operand has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 3 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) [2023-11-29 01:56:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:07,943 INFO L93 Difference]: Finished difference Result 270997 states and 481911 transitions. [2023-11-29 01:56:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:56:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 3 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) Word has length 660 [2023-11-29 01:56:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:08,198 INFO L225 Difference]: With dead ends: 270997 [2023-11-29 01:56:08,198 INFO L226 Difference]: Without dead ends: 135951 [2023-11-29 01:56:08,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1322 GetRequests, 1312 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 01:56:08,334 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1029 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:08,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1181 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:56:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135951 states. [2023-11-29 01:56:14,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135951 to 135159. [2023-11-29 01:56:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135159 states, 121774 states have (on average 1.7576986877330136) internal successors, (214042), 122082 states have internal predecessors, (214042), 12848 states have call successors, (12848), 536 states have call predecessors, (12848), 536 states have return successors, (12848), 12540 states have call predecessors, (12848), 12848 states have call successors, (12848) [2023-11-29 01:56:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135159 states to 135159 states and 239738 transitions. [2023-11-29 01:56:14,949 INFO L78 Accepts]: Start accepts. Automaton has 135159 states and 239738 transitions. Word has length 660 [2023-11-29 01:56:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:14,950 INFO L495 AbstractCegarLoop]: Abstraction has 135159 states and 239738 transitions. [2023-11-29 01:56:14,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 3 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 3 states have call predecessors, (134), 3 states have call successors, (134) [2023-11-29 01:56:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 135159 states and 239738 transitions. [2023-11-29 01:56:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-29 01:56:14,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:14,985 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:14,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:56:15,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:56:15,186 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:15,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash 181918700, now seen corresponding path program 1 times [2023-11-29 01:56:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627218783] [2023-11-29 01:56:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:15,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:56:15,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429434348] [2023-11-29 01:56:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:15,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:56:15,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:56:15,242 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:56:15,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:56:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:15,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:56:15,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:56:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:56:15,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:56:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:15,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627218783] [2023-11-29 01:56:15,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:56:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429434348] [2023-11-29 01:56:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429434348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:15,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:15,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:56:15,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108259841] [2023-11-29 01:56:15,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:15,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:56:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:15,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:56:15,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:56:15,678 INFO L87 Difference]: Start difference. First operand 135159 states and 239738 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:56:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:24,774 INFO L93 Difference]: Finished difference Result 384759 states and 681452 transitions. [2023-11-29 01:56:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:56:24,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 661 [2023-11-29 01:56:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:25,488 INFO L225 Difference]: With dead ends: 384759 [2023-11-29 01:56:25,488 INFO L226 Difference]: Without dead ends: 249601 [2023-11-29 01:56:25,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 659 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 01:56:25,594 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 373 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:25,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1263 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:56:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249601 states. [2023-11-29 01:56:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249601 to 249571. [2023-11-29 01:56:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249571 states, 223642 states have (on average 1.7438495452553635) internal successors, (389998), 224286 states have internal predecessors, (389998), 24884 states have call successors, (24884), 1044 states have call predecessors, (24884), 1044 states have return successors, (24884), 24240 states have call predecessors, (24884), 24884 states have call successors, (24884) [2023-11-29 01:56:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249571 states to 249571 states and 439766 transitions. [2023-11-29 01:56:38,193 INFO L78 Accepts]: Start accepts. Automaton has 249571 states and 439766 transitions. Word has length 661 [2023-11-29 01:56:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:38,194 INFO L495 AbstractCegarLoop]: Abstraction has 249571 states and 439766 transitions. [2023-11-29 01:56:38,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:56:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 249571 states and 439766 transitions. [2023-11-29 01:56:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-29 01:56:38,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:38,261 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:38,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:56:38,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:56:38,462 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:38,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash 222593450, now seen corresponding path program 1 times [2023-11-29 01:56:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:38,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191596954] [2023-11-29 01:56:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:38,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:38,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:56:38,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651351607] [2023-11-29 01:56:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:38,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:56:38,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:56:38,514 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:56:38,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:56:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:38,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:56:38,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:56:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10518 proven. 138 refuted. 0 times theorem prover too weak. 10356 trivial. 0 not checked. [2023-11-29 01:56:39,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:56:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 168 proven. 138 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 01:56:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191596954] [2023-11-29 01:56:39,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:56:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651351607] [2023-11-29 01:56:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651351607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:56:39,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:56:39,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:56:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357382773] [2023-11-29 01:56:39,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:56:39,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:56:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:56:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:56:39,653 INFO L87 Difference]: Start difference. First operand 249571 states and 439766 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-11-29 01:56:46,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:46,891 INFO L93 Difference]: Finished difference Result 379197 states and 665675 transitions. [2023-11-29 01:56:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:56:46,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) Word has length 661 [2023-11-29 01:56:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:47,130 INFO L225 Difference]: With dead ends: 379197 [2023-11-29 01:56:47,130 INFO L226 Difference]: Without dead ends: 129627 [2023-11-29 01:56:47,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1314 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 01:56:47,266 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 994 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:47,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1151 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:56:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129627 states. [2023-11-29 01:56:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129627 to 128611. [2023-11-29 01:56:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128611 states, 114554 states have (on average 1.727726661661749) internal successors, (197918), 114862 states have internal predecessors, (197918), 13380 states have call successors, (13380), 676 states have call predecessors, (13380), 676 states have return successors, (13380), 13072 states have call predecessors, (13380), 13380 states have call successors, (13380) [2023-11-29 01:56:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128611 states to 128611 states and 224678 transitions. [2023-11-29 01:56:54,467 INFO L78 Accepts]: Start accepts. Automaton has 128611 states and 224678 transitions. Word has length 661 [2023-11-29 01:56:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:54,468 INFO L495 AbstractCegarLoop]: Abstraction has 128611 states and 224678 transitions. [2023-11-29 01:56:54,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-11-29 01:56:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 128611 states and 224678 transitions. [2023-11-29 01:56:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:56:54,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:54,499 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:56:54,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:56:54,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:56:54,699 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:54,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash 51297638, now seen corresponding path program 1 times [2023-11-29 01:56:54,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:54,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751977594] [2023-11-29 01:56:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:54,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:56:54,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344557971] [2023-11-29 01:56:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:54,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:56:54,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:56:54,749 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:56:54,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:56:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:55,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:56:55,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:56:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:56:55,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:56:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751977594] [2023-11-29 01:56:55,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:56:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344557971] [2023-11-29 01:56:55,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344557971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:55,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:55,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:56:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142718157] [2023-11-29 01:56:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:55,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:56:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:56:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:56:55,125 INFO L87 Difference]: Start difference. First operand 128611 states and 224678 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:57:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:02,761 INFO L93 Difference]: Finished difference Result 275175 states and 479536 transitions. [2023-11-29 01:57:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:57:02,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 662 [2023-11-29 01:57:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:03,028 INFO L225 Difference]: With dead ends: 275175 [2023-11-29 01:57:03,028 INFO L226 Difference]: Without dead ends: 146565 [2023-11-29 01:57:03,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 660 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 01:57:03,121 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 793 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:03,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1730 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:57:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146565 states. [2023-11-29 01:57:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146565 to 128899. [2023-11-29 01:57:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128899 states, 114842 states have (on average 1.7091830514968391) internal successors, (196286), 115150 states have internal predecessors, (196286), 13380 states have call successors, (13380), 676 states have call predecessors, (13380), 676 states have return successors, (13380), 13072 states have call predecessors, (13380), 13380 states have call successors, (13380) [2023-11-29 01:57:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128899 states to 128899 states and 223046 transitions. [2023-11-29 01:57:10,972 INFO L78 Accepts]: Start accepts. Automaton has 128899 states and 223046 transitions. Word has length 662 [2023-11-29 01:57:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:10,973 INFO L495 AbstractCegarLoop]: Abstraction has 128899 states and 223046 transitions. [2023-11-29 01:57:10,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:57:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 128899 states and 223046 transitions. [2023-11-29 01:57:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:57:11,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:11,004 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:11,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:57:11,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:57:11,205 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:11,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash 239573756, now seen corresponding path program 1 times [2023-11-29 01:57:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:11,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366682179] [2023-11-29 01:57:11,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:11,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:57:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999553011] [2023-11-29 01:57:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:11,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:11,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:11,259 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:11,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:57:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:11,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:57:11,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10578 proven. 144 refuted. 0 times theorem prover too weak. 10290 trivial. 0 not checked. [2023-11-29 01:57:11,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 162 proven. 144 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 01:57:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366682179] [2023-11-29 01:57:12,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:57:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999553011] [2023-11-29 01:57:12,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999553011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:57:12,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:12,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:57:12,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832505927] [2023-11-29 01:57:12,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:57:12,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:57:12,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:57:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:57:12,337 INFO L87 Difference]: Start difference. First operand 128899 states and 223046 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-29 01:57:18,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:18,787 INFO L93 Difference]: Finished difference Result 259149 states and 447387 transitions. [2023-11-29 01:57:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:57:18,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) Word has length 662 [2023-11-29 01:57:18,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:19,006 INFO L225 Difference]: With dead ends: 259149 [2023-11-29 01:57:19,006 INFO L226 Difference]: Without dead ends: 130251 [2023-11-29 01:57:19,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1316 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 01:57:19,101 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 319 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:19,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1147 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:57:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130251 states. [2023-11-29 01:57:25,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130251 to 129123. [2023-11-29 01:57:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129123 states, 115010 states have (on average 1.703138857490653) internal successors, (195878), 115318 states have internal predecessors, (195878), 13380 states have call successors, (13380), 732 states have call predecessors, (13380), 732 states have return successors, (13380), 13072 states have call predecessors, (13380), 13380 states have call successors, (13380) [2023-11-29 01:57:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129123 states to 129123 states and 222638 transitions. [2023-11-29 01:57:26,424 INFO L78 Accepts]: Start accepts. Automaton has 129123 states and 222638 transitions. Word has length 662 [2023-11-29 01:57:26,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:26,425 INFO L495 AbstractCegarLoop]: Abstraction has 129123 states and 222638 transitions. [2023-11-29 01:57:26,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-29 01:57:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 129123 states and 222638 transitions. [2023-11-29 01:57:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:57:26,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:26,465 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:26,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:57:26,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:57:26,665 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:26,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:26,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1754570950, now seen corresponding path program 1 times [2023-11-29 01:57:26,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:26,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227737618] [2023-11-29 01:57:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:26,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:57:26,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822783603] [2023-11-29 01:57:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:26,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:26,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:26,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:26,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:57:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:27,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:57:27,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:57:27,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:57:27,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:27,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227737618] [2023-11-29 01:57:27,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:57:27,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822783603] [2023-11-29 01:57:27,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822783603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:27,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:27,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:57:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490274277] [2023-11-29 01:57:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:27,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:57:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:27,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:57:27,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:57:27,799 INFO L87 Difference]: Start difference. First operand 129123 states and 222638 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:57:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:40,619 INFO L93 Difference]: Finished difference Result 314129 states and 536449 transitions. [2023-11-29 01:57:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:57:40,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 662 [2023-11-29 01:57:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:40,977 INFO L225 Difference]: With dead ends: 314129 [2023-11-29 01:57:40,977 INFO L226 Difference]: Without dead ends: 185007 [2023-11-29 01:57:41,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:41,103 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2561 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:41,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2561 Valid, 2829 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:57:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185007 states. [2023-11-29 01:57:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185007 to 129075. [2023-11-29 01:57:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129075 states, 114962 states have (on average 1.7005097336511195) internal successors, (195494), 115270 states have internal predecessors, (195494), 13380 states have call successors, (13380), 732 states have call predecessors, (13380), 732 states have return successors, (13380), 13072 states have call predecessors, (13380), 13380 states have call successors, (13380) [2023-11-29 01:57:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129075 states to 129075 states and 222254 transitions. [2023-11-29 01:57:49,862 INFO L78 Accepts]: Start accepts. Automaton has 129075 states and 222254 transitions. Word has length 662 [2023-11-29 01:57:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:49,863 INFO L495 AbstractCegarLoop]: Abstraction has 129075 states and 222254 transitions. [2023-11-29 01:57:49,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:57:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 129075 states and 222254 transitions. [2023-11-29 01:57:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:57:49,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:49,901 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:49,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:57:50,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:50,102 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:50,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1174149434, now seen corresponding path program 1 times [2023-11-29 01:57:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:50,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704124535] [2023-11-29 01:57:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:50,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:50,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:57:50,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827157008] [2023-11-29 01:57:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:50,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:50,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:50,152 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:50,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:57:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:50,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:57:50,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:51,097 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:57:51,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:57:51,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:51,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704124535] [2023-11-29 01:57:51,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:57:51,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827157008] [2023-11-29 01:57:51,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827157008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:51,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:51,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:57:51,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219673732] [2023-11-29 01:57:51,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:57:51,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:57:51,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:57:51,101 INFO L87 Difference]: Start difference. First operand 129075 states and 222254 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:58:06,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:06,608 INFO L93 Difference]: Finished difference Result 366577 states and 624967 transitions. [2023-11-29 01:58:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:58:06,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 662 [2023-11-29 01:58:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:07,084 INFO L225 Difference]: With dead ends: 366577 [2023-11-29 01:58:07,084 INFO L226 Difference]: Without dead ends: 237503 [2023-11-29 01:58:07,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:58:07,231 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 1919 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:07,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 3522 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:58:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237503 states. [2023-11-29 01:58:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237503 to 160791. [2023-11-29 01:58:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160791 states, 146678 states have (on average 1.7177354477154039) internal successors, (251954), 146986 states have internal predecessors, (251954), 13380 states have call successors, (13380), 732 states have call predecessors, (13380), 732 states have return successors, (13380), 13072 states have call predecessors, (13380), 13380 states have call successors, (13380) [2023-11-29 01:58:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160791 states to 160791 states and 278714 transitions. [2023-11-29 01:58:17,623 INFO L78 Accepts]: Start accepts. Automaton has 160791 states and 278714 transitions. Word has length 662 [2023-11-29 01:58:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:17,624 INFO L495 AbstractCegarLoop]: Abstraction has 160791 states and 278714 transitions. [2023-11-29 01:58:17,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:58:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 160791 states and 278714 transitions. [2023-11-29 01:58:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:58:17,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:17,667 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:17,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:58:17,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:17,867 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:17,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1197589828, now seen corresponding path program 1 times [2023-11-29 01:58:17,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:17,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182079487] [2023-11-29 01:58:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:17,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:58:17,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695075354] [2023-11-29 01:58:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:17,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:17,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:17,916 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:17,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:58:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:18,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:58:18,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10608 proven. 153 refuted. 0 times theorem prover too weak. 10251 trivial. 0 not checked. [2023-11-29 01:58:18,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 153 proven. 153 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 01:58:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182079487] [2023-11-29 01:58:18,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:58:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695075354] [2023-11-29 01:58:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695075354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:18,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:58:18,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 01:58:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401079036] [2023-11-29 01:58:18,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:18,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:58:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:58:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:58:18,912 INFO L87 Difference]: Start difference. First operand 160791 states and 278714 transitions. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-11-29 01:58:27,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:27,569 INFO L93 Difference]: Finished difference Result 249546 states and 427080 transitions. [2023-11-29 01:58:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:58:27,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) Word has length 662 [2023-11-29 01:58:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:27,728 INFO L225 Difference]: With dead ends: 249546 [2023-11-29 01:58:27,728 INFO L226 Difference]: Without dead ends: 88358 [2023-11-29 01:58:27,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1315 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:58:27,817 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 657 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:27,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1999 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:58:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88358 states. [2023-11-29 01:58:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88358 to 86812. [2023-11-29 01:58:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86812 states, 72556 states have (on average 1.637245713655659) internal successors, (118792), 72865 states have internal predecessors, (118792), 13456 states have call successors, (13456), 799 states have call predecessors, (13456), 799 states have return successors, (13456), 13147 states have call predecessors, (13456), 13456 states have call successors, (13456) [2023-11-29 01:58:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86812 states to 86812 states and 145704 transitions. [2023-11-29 01:58:35,617 INFO L78 Accepts]: Start accepts. Automaton has 86812 states and 145704 transitions. Word has length 662 [2023-11-29 01:58:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:35,617 INFO L495 AbstractCegarLoop]: Abstraction has 86812 states and 145704 transitions. [2023-11-29 01:58:35,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 2 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 2 states have call predecessors, (155), 2 states have call successors, (155) [2023-11-29 01:58:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 86812 states and 145704 transitions. [2023-11-29 01:58:35,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:58:35,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:35,638 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:35,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:58:35,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:58:35,839 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:35,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash 153886840, now seen corresponding path program 1 times [2023-11-29 01:58:35,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:35,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098914276] [2023-11-29 01:58:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:35,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:58:35,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87198065] [2023-11-29 01:58:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:35,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:35,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:35,892 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:35,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:58:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:36,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:58:36,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:36,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:58:36,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:58:36,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:36,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098914276] [2023-11-29 01:58:36,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:58:36,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87198065] [2023-11-29 01:58:36,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87198065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:36,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:36,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:58:36,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653622376] [2023-11-29 01:58:36,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:36,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:58:36,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:36,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:58:36,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:36,284 INFO L87 Difference]: Start difference. First operand 86812 states and 145704 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:58:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:45,049 INFO L93 Difference]: Finished difference Result 197536 states and 331618 transitions. [2023-11-29 01:58:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:58:45,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 662 [2023-11-29 01:58:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:45,253 INFO L225 Difference]: With dead ends: 197536 [2023-11-29 01:58:45,254 INFO L226 Difference]: Without dead ends: 110886 [2023-11-29 01:58:45,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 660 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 01:58:45,332 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 527 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:45,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1443 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110886 states. [2023-11-29 01:58:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110886 to 69784. [2023-11-29 01:58:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69784 states, 58372 states have (on average 1.6356472281230727) internal successors, (95476), 58597 states have internal predecessors, (95476), 10720 states have call successors, (10720), 691 states have call predecessors, (10720), 691 states have return successors, (10720), 10495 states have call predecessors, (10720), 10720 states have call successors, (10720) [2023-11-29 01:58:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69784 states to 69784 states and 116916 transitions. [2023-11-29 01:58:52,536 INFO L78 Accepts]: Start accepts. Automaton has 69784 states and 116916 transitions. Word has length 662 [2023-11-29 01:58:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:52,537 INFO L495 AbstractCegarLoop]: Abstraction has 69784 states and 116916 transitions. [2023-11-29 01:58:52,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:58:52,538 INFO L276 IsEmpty]: Start isEmpty. Operand 69784 states and 116916 transitions. [2023-11-29 01:58:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:58:52,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:52,551 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:52,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:58:52,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:58:52,752 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:52,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1335500296, now seen corresponding path program 1 times [2023-11-29 01:58:52,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:52,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682711568] [2023-11-29 01:58:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:52,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:58:52,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778633322] [2023-11-29 01:58:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:52,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:52,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:52,800 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:52,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:58:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:53,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:58:53,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 7068 proven. 63 refuted. 0 times theorem prover too weak. 13881 trivial. 0 not checked. [2023-11-29 01:58:53,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 243 proven. 63 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 01:58:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:53,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682711568] [2023-11-29 01:58:53,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:58:53,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778633322] [2023-11-29 01:58:53,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778633322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:53,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:58:53,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:58:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352234685] [2023-11-29 01:58:53,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:58:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:58:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:58:53,696 INFO L87 Difference]: Start difference. First operand 69784 states and 116916 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-11-29 01:59:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:00,511 INFO L93 Difference]: Finished difference Result 140548 states and 234719 transitions. [2023-11-29 01:59:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:59:00,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) Word has length 662 [2023-11-29 01:59:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:00,642 INFO L225 Difference]: With dead ends: 140548 [2023-11-29 01:59:00,642 INFO L226 Difference]: Without dead ends: 70926 [2023-11-29 01:59:00,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1316 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 01:59:00,703 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 649 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:00,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1127 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:59:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70926 states. [2023-11-29 01:59:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70926 to 69896. [2023-11-29 01:59:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69896 states, 58456 states have (on average 1.6150266867387437) internal successors, (94408), 58681 states have internal predecessors, (94408), 10720 states have call successors, (10720), 719 states have call predecessors, (10720), 719 states have return successors, (10720), 10495 states have call predecessors, (10720), 10720 states have call successors, (10720) [2023-11-29 01:59:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69896 states to 69896 states and 115848 transitions. [2023-11-29 01:59:07,377 INFO L78 Accepts]: Start accepts. Automaton has 69896 states and 115848 transitions. Word has length 662 [2023-11-29 01:59:07,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:07,378 INFO L495 AbstractCegarLoop]: Abstraction has 69896 states and 115848 transitions. [2023-11-29 01:59:07,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (124), 2 states have call predecessors, (124), 4 states have return successors, (125), 2 states have call predecessors, (125), 2 states have call successors, (125) [2023-11-29 01:59:07,378 INFO L276 IsEmpty]: Start isEmpty. Operand 69896 states and 115848 transitions. [2023-11-29 01:59:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:59:07,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:07,392 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:07,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:59:07,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:59:07,593 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:07,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2115461498, now seen corresponding path program 1 times [2023-11-29 01:59:07,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:07,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621836044] [2023-11-29 01:59:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:07,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:07,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:07,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676866820] [2023-11-29 01:59:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:07,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:07,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:07,639 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:07,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:59:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:08,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:59:08,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:59:08,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:08,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:08,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621836044] [2023-11-29 01:59:08,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:08,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676866820] [2023-11-29 01:59:08,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676866820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:08,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:08,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:59:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386683537] [2023-11-29 01:59:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:59:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:59:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:59:08,763 INFO L87 Difference]: Start difference. First operand 69896 states and 115848 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:59:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:22,093 INFO L93 Difference]: Finished difference Result 202364 states and 334240 transitions. [2023-11-29 01:59:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:59:22,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 662 [2023-11-29 01:59:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:22,328 INFO L225 Difference]: With dead ends: 202364 [2023-11-29 01:59:22,328 INFO L226 Difference]: Without dead ends: 132630 [2023-11-29 01:59:22,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:59:22,404 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 2195 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 3387 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:22,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 3387 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:59:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132630 states. [2023-11-29 01:59:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132630 to 98440. [2023-11-29 01:59:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98440 states, 84028 states have (on average 1.6247917360879707) internal successors, (136528), 84337 states have internal predecessors, (136528), 13504 states have call successors, (13504), 907 states have call predecessors, (13504), 907 states have return successors, (13504), 13195 states have call predecessors, (13504), 13504 states have call successors, (13504) [2023-11-29 01:59:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98440 states to 98440 states and 163536 transitions. [2023-11-29 01:59:32,140 INFO L78 Accepts]: Start accepts. Automaton has 98440 states and 163536 transitions. Word has length 662 [2023-11-29 01:59:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:32,141 INFO L495 AbstractCegarLoop]: Abstraction has 98440 states and 163536 transitions. [2023-11-29 01:59:32,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 7 states have internal predecessors, (150), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 01:59:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 98440 states and 163536 transitions. [2023-11-29 01:59:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-29 01:59:32,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:32,163 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:32,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:59:32,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:32,363 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:32,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash -256277764, now seen corresponding path program 1 times [2023-11-29 01:59:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694014854] [2023-11-29 01:59:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:32,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:32,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:32,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94408398] [2023-11-29 01:59:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:32,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:32,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:32,414 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:32,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:59:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:32,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:59:32,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 5206 proven. 42 refuted. 0 times theorem prover too weak. 15764 trivial. 0 not checked. [2023-11-29 01:59:32,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:59:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 264 proven. 42 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 01:59:33,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:33,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694014854] [2023-11-29 01:59:33,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:33,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94408398] [2023-11-29 01:59:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94408398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:59:33,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:59:33,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 01:59:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736871167] [2023-11-29 01:59:33,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:59:33,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:59:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:59:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:59:33,269 INFO L87 Difference]: Start difference. First operand 98440 states and 163536 transitions. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-11-29 01:59:42,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:42,139 INFO L93 Difference]: Finished difference Result 198028 states and 328127 transitions. [2023-11-29 01:59:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:59:42,140 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 662 [2023-11-29 01:59:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:42,320 INFO L225 Difference]: With dead ends: 198028 [2023-11-29 01:59:42,320 INFO L226 Difference]: Without dead ends: 99750 [2023-11-29 01:59:42,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1327 GetRequests, 1314 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:59:42,408 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 658 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:42,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1546 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:59:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99750 states. [2023-11-29 01:59:51,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99750 to 98552. [2023-11-29 01:59:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98552 states, 84112 states have (on average 1.5882157123834886) internal successors, (133588), 84421 states have internal predecessors, (133588), 13504 states have call successors, (13504), 935 states have call predecessors, (13504), 935 states have return successors, (13504), 13195 states have call predecessors, (13504), 13504 states have call successors, (13504) [2023-11-29 01:59:51,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98552 states to 98552 states and 160596 transitions. [2023-11-29 01:59:51,812 INFO L78 Accepts]: Start accepts. Automaton has 98552 states and 160596 transitions. Word has length 662 [2023-11-29 01:59:51,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:51,813 INFO L495 AbstractCegarLoop]: Abstraction has 98552 states and 160596 transitions. [2023-11-29 01:59:51,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-11-29 01:59:51,813 INFO L276 IsEmpty]: Start isEmpty. Operand 98552 states and 160596 transitions. [2023-11-29 01:59:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 01:59:51,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:51,834 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:51,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:59:52,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:52,035 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:52,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash 81973395, now seen corresponding path program 1 times [2023-11-29 01:59:52,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017387243] [2023-11-29 01:59:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:52,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:52,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:52,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642506802] [2023-11-29 01:59:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:52,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:52,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:52,083 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:52,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:59:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:52,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:59:52,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 01:59:53,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:53,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017387243] [2023-11-29 01:59:53,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:53,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642506802] [2023-11-29 01:59:53,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642506802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:53,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:53,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:59:53,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896918] [2023-11-29 01:59:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:59:53,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:53,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:59:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:59:53,142 INFO L87 Difference]: Start difference. First operand 98552 states and 160596 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 02:00:09,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:09,794 INFO L93 Difference]: Finished difference Result 299030 states and 486711 transitions. [2023-11-29 02:00:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:00:09,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 663 [2023-11-29 02:00:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:10,183 INFO L225 Difference]: With dead ends: 299030 [2023-11-29 02:00:10,183 INFO L226 Difference]: Without dead ends: 200640 [2023-11-29 02:00:10,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:00:10,295 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 558 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:10,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 2005 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:00:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200640 states. [2023-11-29 02:00:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200640 to 197276. [2023-11-29 02:00:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197276 states, 168484 states have (on average 1.587307993637378) internal successors, (267436), 169101 states have internal predecessors, (267436), 26932 states have call successors, (26932), 1859 states have call predecessors, (26932), 1859 states have return successors, (26932), 26315 states have call predecessors, (26932), 26932 states have call successors, (26932) [2023-11-29 02:00:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197276 states to 197276 states and 321300 transitions. [2023-11-29 02:00:30,195 INFO L78 Accepts]: Start accepts. Automaton has 197276 states and 321300 transitions. Word has length 663 [2023-11-29 02:00:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:30,196 INFO L495 AbstractCegarLoop]: Abstraction has 197276 states and 321300 transitions. [2023-11-29 02:00:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 02:00:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 197276 states and 321300 transitions. [2023-11-29 02:00:30,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:00:30,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:30,218 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:00:30,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 02:00:30,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 02:00:30,419 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:30,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash -504832619, now seen corresponding path program 1 times [2023-11-29 02:00:30,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:30,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773779370] [2023-11-29 02:00:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:30,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:00:30,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669291293] [2023-11-29 02:00:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:30,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:30,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:30,462 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:30,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 02:00:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:30,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:00:30,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21012 trivial. 0 not checked. [2023-11-29 02:00:31,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:00:31,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773779370] [2023-11-29 02:00:31,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:00:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669291293] [2023-11-29 02:00:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669291293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:31,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:31,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:00:31,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114964967] [2023-11-29 02:00:31,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:31,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:00:31,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:00:31,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:00:31,195 INFO L87 Difference]: Start difference. First operand 197276 states and 321300 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 02:00:37,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:01:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:25,089 INFO L93 Difference]: Finished difference Result 705512 states and 1152936 transitions. [2023-11-29 02:01:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:01:25,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) Word has length 663 [2023-11-29 02:01:25,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:26,276 INFO L225 Difference]: With dead ends: 705512 [2023-11-29 02:01:26,276 INFO L226 Difference]: Without dead ends: 508398 [2023-11-29 02:01:26,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:01:26,497 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1133 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 135 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:26,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 2287 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 371 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2023-11-29 02:01:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508398 states. [2023-11-29 02:01:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508398 to 237156. [2023-11-29 02:01:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237156 states, 206156 states have (on average 1.5996623915869537) internal successors, (329780), 206869 states have internal predecessors, (329780), 29044 states have call successors, (29044), 1955 states have call predecessors, (29044), 1955 states have return successors, (29044), 28331 states have call predecessors, (29044), 29044 states have call successors, (29044) [2023-11-29 02:01:58,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237156 states to 237156 states and 387868 transitions. [2023-11-29 02:01:58,355 INFO L78 Accepts]: Start accepts. Automaton has 237156 states and 387868 transitions. Word has length 663 [2023-11-29 02:01:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:58,356 INFO L495 AbstractCegarLoop]: Abstraction has 237156 states and 387868 transitions. [2023-11-29 02:01:58,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (103), 1 states have call predecessors, (103), 1 states have return successors, (103), 1 states have call predecessors, (103), 1 states have call successors, (103) [2023-11-29 02:01:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 237156 states and 387868 transitions. [2023-11-29 02:01:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:01:58,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:58,388 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:01:58,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 02:01:58,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 02:01:58,589 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:58,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1229271831, now seen corresponding path program 1 times [2023-11-29 02:01:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:58,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075159242] [2023-11-29 02:01:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:58,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:01:58,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953912977] [2023-11-29 02:01:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:58,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:58,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:01:58,645 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:01:58,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 02:01:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:59,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:01:59,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:01:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 10102 proven. 186 refuted. 0 times theorem prover too weak. 10724 trivial. 0 not checked. [2023-11-29 02:01:59,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:01:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 120 proven. 186 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 02:01:59,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:59,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075159242] [2023-11-29 02:01:59,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:01:59,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953912977] [2023-11-29 02:01:59,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953912977] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:01:59,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:01:59,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 02:01:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461855959] [2023-11-29 02:01:59,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:01:59,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:01:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:01:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:01:59,861 INFO L87 Difference]: Start difference. First operand 237156 states and 387868 transitions. Second operand has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) [2023-11-29 02:02:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:02:29,908 INFO L93 Difference]: Finished difference Result 477960 states and 779430 transitions. [2023-11-29 02:02:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:02:29,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) Word has length 663 [2023-11-29 02:02:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:02:30,352 INFO L225 Difference]: With dead ends: 477960 [2023-11-29 02:02:30,352 INFO L226 Difference]: Without dead ends: 240966 [2023-11-29 02:02:30,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 1316 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:02:30,521 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 650 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:02:30,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1794 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:02:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240966 states. [2023-11-29 02:02:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240966 to 238056. [2023-11-29 02:02:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238056 states, 206831 states have (on average 1.5960808582852668) internal successors, (330119), 207544 states have internal predecessors, (330119), 29044 states have call successors, (29044), 2180 states have call predecessors, (29044), 2180 states have return successors, (29044), 28331 states have call predecessors, (29044), 29044 states have call successors, (29044) [2023-11-29 02:03:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238056 states to 238056 states and 388207 transitions. [2023-11-29 02:03:00,839 INFO L78 Accepts]: Start accepts. Automaton has 238056 states and 388207 transitions. Word has length 663 [2023-11-29 02:03:00,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:00,839 INFO L495 AbstractCegarLoop]: Abstraction has 238056 states and 388207 transitions. [2023-11-29 02:03:00,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 3 states have call successors, (165), 2 states have call predecessors, (165), 4 states have return successors, (166), 3 states have call predecessors, (166), 3 states have call successors, (166) [2023-11-29 02:03:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 238056 states and 388207 transitions. [2023-11-29 02:03:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-29 02:03:00,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:00,861 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:03:00,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 02:03:01,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 02:03:01,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:01,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1498937515, now seen corresponding path program 1 times [2023-11-29 02:03:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681198282] [2023-11-29 02:03:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:01,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:03:01,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589986044] [2023-11-29 02:03:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:01,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:03:01,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:03:01,109 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:03:01,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f7e39b3-8cdf-4733-b2f5-4d5cded4a5e0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 02:03:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:01,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:03:01,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:03:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 5206 proven. 42 refuted. 0 times theorem prover too weak. 15764 trivial. 0 not checked. [2023-11-29 02:03:03,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:03:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21012 backedges. 264 proven. 42 refuted. 0 times theorem prover too weak. 20706 trivial. 0 not checked. [2023-11-29 02:03:04,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681198282] [2023-11-29 02:03:04,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:03:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589986044] [2023-11-29 02:03:04,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589986044] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:03:04,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:03:04,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 02:03:04,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323580865] [2023-11-29 02:03:04,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:03:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:03:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:04,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:03:04,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:03:04,242 INFO L87 Difference]: Start difference. First operand 238056 states and 388207 transitions. Second operand has 12 states, 12 states have (on average 24.583333333333332) internal successors, (295), 12 states have internal predecessors, (295), 4 states have call successors, (206), 3 states have call predecessors, (206), 5 states have return successors, (206), 4 states have call predecessors, (206), 4 states have call successors, (206)