./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 09:14:35,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:14:35,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:14:35,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:14:35,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:14:35,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:14:35,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:14:35,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:14:35,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:14:35,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:14:35,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:14:35,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:14:35,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:14:35,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:14:35,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:14:35,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:14:35,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:14:35,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:14:35,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:14:35,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:14:35,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:14:35,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:14:35,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:14:35,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:14:35,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:14:35,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:14:35,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:14:35,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:14:35,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:14:35,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:14:35,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:14:35,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:14:35,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:14:35,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:14:35,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:14:35,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:14:35,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:14:35,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:14:35,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:14:35,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:14:35,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:14:35,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 09:14:35,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:14:35,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:14:35,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:14:35,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:14:35,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:14:35,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:14:35,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:14:35,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:14:35,834 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:14:35,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:14:35,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:14:35,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:14:35,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:14:35,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:14:35,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:14:35,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:14:35,837 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:14:35,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:14:35,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:14:35,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:14:35,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:14:35,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:14:35,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:14:35,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:14:35,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:14:35,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:14:35,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:14:35,840 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:14:35,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:14:35,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:14:35,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2022-11-21 09:14:36,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:14:36,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:14:36,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:14:36,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:14:36,261 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:14:36,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-21 09:14:39,351 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:14:39,967 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:14:39,969 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-21 09:14:40,016 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/data/e5f87d929/703f4da6000d4c78a1eedff14eb24db9/FLAG67ffefc9e [2022-11-21 09:14:40,034 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/data/e5f87d929/703f4da6000d4c78a1eedff14eb24db9 [2022-11-21 09:14:40,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:14:40,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:14:40,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:14:40,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:14:40,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:14:40,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:14:40" (1/1) ... [2022-11-21 09:14:40,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13bb88a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:40, skipping insertion in model container [2022-11-21 09:14:40,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:14:40" (1/1) ... [2022-11-21 09:14:40,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:14:40,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:14:41,142 WARN L237 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_afea4160-fca0-4c21-93e0-f056aadf8b41/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-21 09:14:41,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:14:41,742 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:14:41,963 WARN L237 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_afea4160-fca0-4c21-93e0-f056aadf8b41/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2022-11-21 09:14:42,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:14:42,273 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:14:42,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42 WrapperNode [2022-11-21 09:14:42,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:14:42,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:14:42,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:14:42,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:14:42,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,515 INFO L138 Inliner]: procedures = 174, calls = 1356, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 2485 [2022-11-21 09:14:42,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:14:42,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:14:42,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:14:42,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:14:42,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,642 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:14:42,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:14:42,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:14:42,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:14:42,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (1/1) ... [2022-11-21 09:14:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:14:42,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:14:42,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:14:42,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:14:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2022-11-21 09:14:42,766 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2022-11-21 09:14:42,766 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2022-11-21 09:14:42,767 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2022-11-21 09:14:42,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 09:14:42,767 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-21 09:14:42,767 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-21 09:14:42,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2022-11-21 09:14:42,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2022-11-21 09:14:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 09:14:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 09:14:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-21 09:14:42,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-21 09:14:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:14:42,769 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-21 09:14:42,770 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-21 09:14:42,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-21 09:14:42,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-21 09:14:42,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-21 09:14:42,770 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-21 09:14:42,770 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-21 09:14:42,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-21 09:14:42,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 09:14:42,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 09:14:42,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-21 09:14:42,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-21 09:14:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2022-11-21 09:14:42,772 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2022-11-21 09:14:42,772 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-21 09:14:42,772 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-21 09:14:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-21 09:14:42,773 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-21 09:14:42,773 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2022-11-21 09:14:42,774 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2022-11-21 09:14:42,774 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2022-11-21 09:14:42,774 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2022-11-21 09:14:42,775 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-21 09:14:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-21 09:14:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2022-11-21 09:14:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2022-11-21 09:14:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2022-11-21 09:14:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2022-11-21 09:14:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:14:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-21 09:14:42,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-21 09:14:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2022-11-21 09:14:42,777 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2022-11-21 09:14:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-21 09:14:42,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-21 09:14:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-21 09:14:42,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-21 09:14:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 09:14:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 09:14:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:14:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-21 09:14:42,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-21 09:14:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2022-11-21 09:14:42,780 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2022-11-21 09:14:42,780 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2022-11-21 09:14:42,781 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2022-11-21 09:14:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:14:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-21 09:14:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-21 09:14:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2022-11-21 09:14:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2022-11-21 09:14:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-21 09:14:42,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-21 09:14:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:14:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 09:14:42,783 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-21 09:14:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-21 09:14:42,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-21 09:14:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-11-21 09:14:42,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-11-21 09:14:42,784 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-21 09:14:42,785 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-21 09:14:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 09:14:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2022-11-21 09:14:42,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2022-11-21 09:14:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-21 09:14:42,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-21 09:14:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-21 09:14:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-21 09:14:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2022-11-21 09:14:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2022-11-21 09:14:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:14:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 09:14:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-21 09:14:42,789 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-21 09:14:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2022-11-21 09:14:42,789 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2022-11-21 09:14:42,789 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-21 09:14:42,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-21 09:14:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-21 09:14:42,790 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-21 09:14:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2022-11-21 09:14:42,790 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2022-11-21 09:14:42,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-21 09:14:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-21 09:14:42,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:14:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-21 09:14:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-21 09:14:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 09:14:42,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-21 09:14:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-21 09:14:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:14:42,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:14:43,559 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:14:43,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:14:43,879 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-21 09:14:44,836 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-21 09:14:46,148 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:14:46,175 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:14:46,175 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 09:14:46,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:14:46 BoogieIcfgContainer [2022-11-21 09:14:46,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:14:46,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:14:46,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:14:46,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:14:46,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:14:40" (1/3) ... [2022-11-21 09:14:46,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604fe64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:14:46, skipping insertion in model container [2022-11-21 09:14:46,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:14:42" (2/3) ... [2022-11-21 09:14:46,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604fe64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:14:46, skipping insertion in model container [2022-11-21 09:14:46,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:14:46" (3/3) ... [2022-11-21 09:14:46,201 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-11-21 09:14:46,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:14:46,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:14:46,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:14:46,358 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=LoopsAndPotentialCycles, 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;@20c71ec1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:14:46,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:14:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 527 states have (on average 1.3567362428842504) internal successors, (715), 557 states have internal predecessors, (715), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-21 09:14:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 09:14:46,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:14:46,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:46,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:14:46,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:46,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1782780063, now seen corresponding path program 1 times [2022-11-21 09:14:46,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:46,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136754372] [2022-11-21 09:14:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:47,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:14:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:14:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:14:47,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:47,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136754372] [2022-11-21 09:14:47,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136754372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:47,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:47,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:47,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449678949] [2022-11-21 09:14:47,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:47,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:14:47,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:14:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:14:47,260 INFO L87 Difference]: Start difference. First operand has 750 states, 527 states have (on average 1.3567362428842504) internal successors, (715), 557 states have internal predecessors, (715), 178 states have call successors, (178), 45 states have call predecessors, (178), 43 states have return successors, (172), 166 states have call predecessors, (172), 172 states have call successors, (172) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 09:14:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:14:52,157 INFO L93 Difference]: Finished difference Result 2529 states and 3735 transitions. [2022-11-21 09:14:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:14:52,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-21 09:14:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:14:52,191 INFO L225 Difference]: With dead ends: 2529 [2022-11-21 09:14:52,191 INFO L226 Difference]: Without dead ends: 1756 [2022-11-21 09:14:52,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:14:52,208 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 2158 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 1142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1142 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:14:52,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 2688 Invalid, 2741 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1142 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 09:14:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2022-11-21 09:14:52,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1433. [2022-11-21 09:14:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1013 states have (on average 1.3405725567620927) internal successors, (1358), 1053 states have internal predecessors, (1358), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-21 09:14:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2025 transitions. [2022-11-21 09:14:52,452 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2025 transitions. Word has length 29 [2022-11-21 09:14:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:14:52,453 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 2025 transitions. [2022-11-21 09:14:52,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 09:14:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2025 transitions. [2022-11-21 09:14:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 09:14:52,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:14:52,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:52,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:14:52,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:14:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:52,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1459439698, now seen corresponding path program 1 times [2022-11-21 09:14:52,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:52,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869981397] [2022-11-21 09:14:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:52,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:14:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:52,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:14:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:14:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:14:52,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:52,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869981397] [2022-11-21 09:14:52,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869981397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:52,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:52,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148590968] [2022-11-21 09:14:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:52,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:14:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:14:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:14:52,800 INFO L87 Difference]: Start difference. First operand 1433 states and 2025 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:14:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:14:55,200 INFO L93 Difference]: Finished difference Result 1782 states and 2557 transitions. [2022-11-21 09:14:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:14:55,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-21 09:14:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:14:55,213 INFO L225 Difference]: With dead ends: 1782 [2022-11-21 09:14:55,214 INFO L226 Difference]: Without dead ends: 1769 [2022-11-21 09:14:55,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:14:55,217 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 1606 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:14:55,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 1628 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 09:14:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-11-21 09:14:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1433. [2022-11-21 09:14:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1013 states have (on average 1.3395853899308983) internal successors, (1357), 1053 states have internal predecessors, (1357), 336 states have call successors, (336), 84 states have call predecessors, (336), 83 states have return successors, (331), 319 states have call predecessors, (331), 331 states have call successors, (331) [2022-11-21 09:14:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2024 transitions. [2022-11-21 09:14:55,333 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2024 transitions. Word has length 39 [2022-11-21 09:14:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:14:55,334 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 2024 transitions. [2022-11-21 09:14:55,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:14:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2024 transitions. [2022-11-21 09:14:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-21 09:14:55,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:14:55,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:14:55,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:14:55,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:14:55,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:14:55,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1516698000, now seen corresponding path program 1 times [2022-11-21 09:14:55,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:14:55,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233334098] [2022-11-21 09:14:55,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:14:55,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:14:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:14:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:14:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:55,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:14:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:14:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:14:55,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:14:55,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233334098] [2022-11-21 09:14:55,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233334098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:55,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:14:55,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:14:55,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559833157] [2022-11-21 09:14:55,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:55,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:14:55,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:56,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:14:56,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:14:56,001 INFO L87 Difference]: Start difference. First operand 1433 states and 2024 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:00,458 INFO L93 Difference]: Finished difference Result 4901 states and 7229 transitions. [2022-11-21 09:15:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:15:00,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-21 09:15:00,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:00,482 INFO L225 Difference]: With dead ends: 4901 [2022-11-21 09:15:00,482 INFO L226 Difference]: Without dead ends: 3487 [2022-11-21 09:15:00,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:15:00,496 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 2241 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 1141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:00,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 2636 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 09:15:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2022-11-21 09:15:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 2986. [2022-11-21 09:15:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2119 states have (on average 1.335063709296838) internal successors, (2829), 2195 states have internal predecessors, (2829), 678 states have call successors, (678), 165 states have call predecessors, (678), 188 states have return successors, (793), 669 states have call predecessors, (793), 673 states have call successors, (793) [2022-11-21 09:15:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 4300 transitions. [2022-11-21 09:15:00,708 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 4300 transitions. Word has length 39 [2022-11-21 09:15:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:00,709 INFO L495 AbstractCegarLoop]: Abstraction has 2986 states and 4300 transitions. [2022-11-21 09:15:00,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 4300 transitions. [2022-11-21 09:15:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 09:15:00,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:00,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:00,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:15:00,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash -227405644, now seen corresponding path program 1 times [2022-11-21 09:15:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:00,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735694765] [2022-11-21 09:15:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:15:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:15:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:01,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735694765] [2022-11-21 09:15:01,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735694765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:01,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:01,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:15:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743770629] [2022-11-21 09:15:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:15:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:15:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:15:01,248 INFO L87 Difference]: Start difference. First operand 2986 states and 4300 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:05,519 INFO L93 Difference]: Finished difference Result 9888 states and 14915 transitions. [2022-11-21 09:15:05,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:15:05,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-21 09:15:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:05,571 INFO L225 Difference]: With dead ends: 9888 [2022-11-21 09:15:05,572 INFO L226 Difference]: Without dead ends: 6921 [2022-11-21 09:15:05,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:15:05,594 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 2244 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 1165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1165 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:05,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2347 Valid, 2529 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1165 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 09:15:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6921 states. [2022-11-21 09:15:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6921 to 6085. [2022-11-21 09:15:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 4324 states have (on average 1.3304810360777057) internal successors, (5753), 4472 states have internal predecessors, (5753), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-21 09:15:06,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 8932 transitions. [2022-11-21 09:15:06,175 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 8932 transitions. Word has length 40 [2022-11-21 09:15:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:06,178 INFO L495 AbstractCegarLoop]: Abstraction has 6085 states and 8932 transitions. [2022-11-21 09:15:06,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 8932 transitions. [2022-11-21 09:15:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 09:15:06,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:06,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:15:06,182 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1539961107, now seen corresponding path program 1 times [2022-11-21 09:15:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:06,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056682023] [2022-11-21 09:15:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:06,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:15:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:15:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:06,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056682023] [2022-11-21 09:15:06,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056682023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:06,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:06,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:15:06,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614262035] [2022-11-21 09:15:06,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:06,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:15:06,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:06,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:15:06,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:15:06,454 INFO L87 Difference]: Start difference. First operand 6085 states and 8932 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:10,655 INFO L93 Difference]: Finished difference Result 6919 states and 10282 transitions. [2022-11-21 09:15:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:15:10,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-21 09:15:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:10,697 INFO L225 Difference]: With dead ends: 6919 [2022-11-21 09:15:10,697 INFO L226 Difference]: Without dead ends: 6916 [2022-11-21 09:15:10,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:15:10,701 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 2244 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 1158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1158 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 2520 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1158 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 09:15:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2022-11-21 09:15:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 6086. [2022-11-21 09:15:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6086 states, 4325 states have (on average 1.3304046242774565) internal successors, (5754), 4473 states have internal predecessors, (5754), 1362 states have call successors, (1362), 327 states have call predecessors, (1362), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-21 09:15:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 8933 transitions. [2022-11-21 09:15:11,185 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 8933 transitions. Word has length 41 [2022-11-21 09:15:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:11,186 INFO L495 AbstractCegarLoop]: Abstraction has 6086 states and 8933 transitions. [2022-11-21 09:15:11,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 8933 transitions. [2022-11-21 09:15:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-21 09:15:11,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:11,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:15:11,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 493760407, now seen corresponding path program 1 times [2022-11-21 09:15:11,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:11,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635095412] [2022-11-21 09:15:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:15:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:15:11,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:11,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635095412] [2022-11-21 09:15:11,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635095412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:11,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:11,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:15:11,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804853647] [2022-11-21 09:15:11,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:11,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:15:11,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:15:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:15:11,460 INFO L87 Difference]: Start difference. First operand 6086 states and 8933 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:13,929 INFO L93 Difference]: Finished difference Result 6915 states and 10278 transitions. [2022-11-21 09:15:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:15:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-21 09:15:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:13,986 INFO L225 Difference]: With dead ends: 6915 [2022-11-21 09:15:13,987 INFO L226 Difference]: Without dead ends: 6912 [2022-11-21 09:15:13,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:15:13,992 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 1585 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:13,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 1576 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 09:15:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2022-11-21 09:15:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 6085. [2022-11-21 09:15:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6085 states, 4325 states have (on average 1.3301734104046243) internal successors, (5753), 4472 states have internal predecessors, (5753), 1361 states have call successors, (1361), 327 states have call predecessors, (1361), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-21 09:15:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 8931 transitions. [2022-11-21 09:15:14,553 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 8931 transitions. Word has length 42 [2022-11-21 09:15:14,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:14,555 INFO L495 AbstractCegarLoop]: Abstraction has 6085 states and 8931 transitions. [2022-11-21 09:15:14,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:14,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 8931 transitions. [2022-11-21 09:15:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 09:15:14,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:14,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:15:14,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1873685354, now seen corresponding path program 1 times [2022-11-21 09:15:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:14,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015280489] [2022-11-21 09:15:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:15:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:15:14,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:14,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015280489] [2022-11-21 09:15:14,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015280489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:14,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:14,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:15:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957900930] [2022-11-21 09:15:14,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:14,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:15:14,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:14,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:15:14,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:15:14,788 INFO L87 Difference]: Start difference. First operand 6085 states and 8931 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:17,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:17,100 INFO L93 Difference]: Finished difference Result 6914 states and 10276 transitions. [2022-11-21 09:15:17,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:15:17,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-11-21 09:15:17,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:17,135 INFO L225 Difference]: With dead ends: 6914 [2022-11-21 09:15:17,136 INFO L226 Difference]: Without dead ends: 6902 [2022-11-21 09:15:17,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:15:17,141 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 1580 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:17,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1673 Valid, 1576 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 09:15:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6902 states. [2022-11-21 09:15:17,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6902 to 6075. [2022-11-21 09:15:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6075 states, 4316 states have (on average 1.329935125115848) internal successors, (5740), 4462 states have internal predecessors, (5740), 1360 states have call successors, (1360), 327 states have call predecessors, (1360), 398 states have return successors, (1817), 1369 states have call predecessors, (1817), 1357 states have call successors, (1817) [2022-11-21 09:15:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6075 states to 6075 states and 8917 transitions. [2022-11-21 09:15:17,661 INFO L78 Accepts]: Start accepts. Automaton has 6075 states and 8917 transitions. Word has length 43 [2022-11-21 09:15:17,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:17,662 INFO L495 AbstractCegarLoop]: Abstraction has 6075 states and 8917 transitions. [2022-11-21 09:15:17,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 09:15:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6075 states and 8917 transitions. [2022-11-21 09:15:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-21 09:15:17,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:17,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:17,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:15:17,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1836418368, now seen corresponding path program 1 times [2022-11-21 09:15:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18547857] [2022-11-21 09:15:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 09:15:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 09:15:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:17,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 09:15:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:15:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 09:15:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 09:15:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-21 09:15:18,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:18,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18547857] [2022-11-21 09:15:18,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18547857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:18,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:18,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 09:15:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688519863] [2022-11-21 09:15:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:18,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:15:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:15:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:15:18,216 INFO L87 Difference]: Start difference. First operand 6075 states and 8917 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 09:15:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:22,439 INFO L93 Difference]: Finished difference Result 14644 states and 21643 transitions. [2022-11-21 09:15:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:15:22,440 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2022-11-21 09:15:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:22,481 INFO L225 Difference]: With dead ends: 14644 [2022-11-21 09:15:22,481 INFO L226 Difference]: Without dead ends: 8588 [2022-11-21 09:15:22,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:15:22,506 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 2974 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 2186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2186 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:22,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 2717 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2186 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 09:15:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8588 states. [2022-11-21 09:15:23,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8588 to 7239. [2022-11-21 09:15:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7239 states, 5161 states have (on average 1.326487114900213) internal successors, (6846), 5339 states have internal predecessors, (6846), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-11-21 09:15:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7239 states to 7239 states and 10565 transitions. [2022-11-21 09:15:23,244 INFO L78 Accepts]: Start accepts. Automaton has 7239 states and 10565 transitions. Word has length 143 [2022-11-21 09:15:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:23,244 INFO L495 AbstractCegarLoop]: Abstraction has 7239 states and 10565 transitions. [2022-11-21 09:15:23,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 09:15:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7239 states and 10565 transitions. [2022-11-21 09:15:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-21 09:15:23,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:23,256 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:23,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:15:23,257 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 747404625, now seen corresponding path program 1 times [2022-11-21 09:15:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:23,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909989509] [2022-11-21 09:15:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:15:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 09:15:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:15:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 09:15:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:15:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 09:15:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 09:15:23,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:23,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909989509] [2022-11-21 09:15:23,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909989509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:23,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:23,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 09:15:23,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391446260] [2022-11-21 09:15:23,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:23,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:15:23,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:15:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:15:23,696 INFO L87 Difference]: Start difference. First operand 7239 states and 10565 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 09:15:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:28,076 INFO L93 Difference]: Finished difference Result 15788 states and 23271 transitions. [2022-11-21 09:15:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:15:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-11-21 09:15:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:28,125 INFO L225 Difference]: With dead ends: 15788 [2022-11-21 09:15:28,125 INFO L226 Difference]: Without dead ends: 8572 [2022-11-21 09:15:28,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:15:28,158 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 1706 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 1247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1247 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:28,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 3502 Invalid, 3458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1247 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 09:15:28,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2022-11-21 09:15:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 7247. [2022-11-21 09:15:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 5169 states have (on average 1.3259818146643452) internal successors, (6854), 5347 states have internal predecessors, (6854), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-11-21 09:15:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 10573 transitions. [2022-11-21 09:15:28,935 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 10573 transitions. Word has length 152 [2022-11-21 09:15:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:28,936 INFO L495 AbstractCegarLoop]: Abstraction has 7247 states and 10573 transitions. [2022-11-21 09:15:28,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 09:15:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 10573 transitions. [2022-11-21 09:15:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-21 09:15:28,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:28,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:28,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:15:28,949 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:28,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1634627471, now seen corresponding path program 1 times [2022-11-21 09:15:28,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:28,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21882108] [2022-11-21 09:15:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:28,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:15:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 09:15:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:15:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 09:15:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:15:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 09:15:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 09:15:30,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:30,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21882108] [2022-11-21 09:15:30,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21882108] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:30,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16683689] [2022-11-21 09:15:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:30,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:30,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:30,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:30,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:15:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:30,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 09:15:30,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 09:15:31,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:15:31,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16683689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:31,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:15:31,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-21 09:15:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993081303] [2022-11-21 09:15:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:31,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:15:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:15:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:15:31,051 INFO L87 Difference]: Start difference. First operand 7247 states and 10573 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 09:15:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:31,870 INFO L93 Difference]: Finished difference Result 14701 states and 21497 transitions. [2022-11-21 09:15:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:15:31,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-11-21 09:15:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:31,901 INFO L225 Difference]: With dead ends: 14701 [2022-11-21 09:15:31,901 INFO L226 Difference]: Without dead ends: 7477 [2022-11-21 09:15:31,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:15:31,925 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 223 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:31,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2016 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:15:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2022-11-21 09:15:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7247. [2022-11-21 09:15:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 5169 states have (on average 1.3244341265235056) internal successors, (6846), 5339 states have internal predecessors, (6846), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 527 states have return successors, (2169), 1643 states have call predecessors, (2169), 1547 states have call successors, (2169) [2022-11-21 09:15:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 10565 transitions. [2022-11-21 09:15:32,579 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 10565 transitions. Word has length 152 [2022-11-21 09:15:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:32,579 INFO L495 AbstractCegarLoop]: Abstraction has 7247 states and 10565 transitions. [2022-11-21 09:15:32,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 09:15:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 10565 transitions. [2022-11-21 09:15:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-21 09:15:32,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:32,593 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:32,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:15:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 09:15:32,804 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash -796703472, now seen corresponding path program 1 times [2022-11-21 09:15:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:32,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434964922] [2022-11-21 09:15:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:32,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:15:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 09:15:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:15:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 09:15:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 09:15:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:15:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 09:15:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:33,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:34,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 09:15:34,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:34,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434964922] [2022-11-21 09:15:34,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434964922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:34,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436566989] [2022-11-21 09:15:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:34,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:34,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:34,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:34,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:15:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:34,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-21 09:15:34,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 09:15:35,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:15:35,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436566989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:35,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:15:35,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2022-11-21 09:15:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258238206] [2022-11-21 09:15:35,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:35,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:15:35,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:15:35,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-21 09:15:35,109 INFO L87 Difference]: Start difference. First operand 7247 states and 10565 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 09:15:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:37,080 INFO L93 Difference]: Finished difference Result 23673 states and 34941 transitions. [2022-11-21 09:15:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 09:15:37,081 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2022-11-21 09:15:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:37,161 INFO L225 Difference]: With dead ends: 23673 [2022-11-21 09:15:37,161 INFO L226 Difference]: Without dead ends: 16449 [2022-11-21 09:15:37,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 09:15:37,194 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1513 mSDsluCounter, 12897 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 14238 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:37,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 14238 Invalid, 353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 09:15:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16449 states. [2022-11-21 09:15:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16449 to 7311. [2022-11-21 09:15:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7311 states, 5221 states have (on average 1.321202834705995) internal successors, (6898), 5387 states have internal predecessors, (6898), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 539 states have return successors, (2217), 1659 states have call predecessors, (2217), 1547 states have call successors, (2217) [2022-11-21 09:15:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7311 states to 7311 states and 10665 transitions. [2022-11-21 09:15:38,167 INFO L78 Accepts]: Start accepts. Automaton has 7311 states and 10665 transitions. Word has length 157 [2022-11-21 09:15:38,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:38,168 INFO L495 AbstractCegarLoop]: Abstraction has 7311 states and 10665 transitions. [2022-11-21 09:15:38,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 9 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 09:15:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7311 states and 10665 transitions. [2022-11-21 09:15:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-21 09:15:38,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:38,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:38,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:15:38,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:38,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:38,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1329675430, now seen corresponding path program 1 times [2022-11-21 09:15:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:38,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654878573] [2022-11-21 09:15:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:38,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-21 09:15:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 09:15:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 09:15:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 09:15:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 09:15:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:15:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 09:15:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 09:15:39,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:39,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654878573] [2022-11-21 09:15:39,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654878573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487941903] [2022-11-21 09:15:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:39,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:39,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:39,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:39,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 09:15:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 09:15:40,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-21 09:15:40,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:15:40,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487941903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:40,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:15:40,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-21 09:15:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620571067] [2022-11-21 09:15:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:40,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:15:40,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:15:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:15:40,480 INFO L87 Difference]: Start difference. First operand 7311 states and 10665 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 09:15:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:41,154 INFO L93 Difference]: Finished difference Result 14604 states and 21311 transitions. [2022-11-21 09:15:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 09:15:41,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2022-11-21 09:15:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:41,189 INFO L225 Difference]: With dead ends: 14604 [2022-11-21 09:15:41,190 INFO L226 Difference]: Without dead ends: 7312 [2022-11-21 09:15:41,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:15:41,213 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 2 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:41,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3076 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:15:41,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2022-11-21 09:15:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 7312. [2022-11-21 09:15:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7312 states, 5222 states have (on average 1.3211413251627728) internal successors, (6899), 5388 states have internal predecessors, (6899), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 539 states have return successors, (2217), 1659 states have call predecessors, (2217), 1547 states have call successors, (2217) [2022-11-21 09:15:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7312 states to 7312 states and 10666 transitions. [2022-11-21 09:15:41,899 INFO L78 Accepts]: Start accepts. Automaton has 7312 states and 10666 transitions. Word has length 163 [2022-11-21 09:15:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:41,899 INFO L495 AbstractCegarLoop]: Abstraction has 7312 states and 10666 transitions. [2022-11-21 09:15:41,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 09:15:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7312 states and 10666 transitions. [2022-11-21 09:15:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-21 09:15:41,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:41,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:41,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:15:42,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:42,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:42,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1018686141, now seen corresponding path program 1 times [2022-11-21 09:15:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:42,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725162303] [2022-11-21 09:15:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:42,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 09:15:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 09:15:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 09:15:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 09:15:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:15:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 09:15:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-21 09:15:43,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:43,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725162303] [2022-11-21 09:15:43,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725162303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:43,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51718203] [2022-11-21 09:15:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:43,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:43,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:43,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:43,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 09:15:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:44,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 09:15:44,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-21 09:15:44,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:15:44,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51718203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:44,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:15:44,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-11-21 09:15:44,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221859543] [2022-11-21 09:15:44,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:44,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:15:44,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:15:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-21 09:15:44,176 INFO L87 Difference]: Start difference. First operand 7312 states and 10666 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 09:15:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:45,171 INFO L93 Difference]: Finished difference Result 14900 states and 21802 transitions. [2022-11-21 09:15:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:15:45,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2022-11-21 09:15:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:45,220 INFO L225 Difference]: With dead ends: 14900 [2022-11-21 09:15:45,221 INFO L226 Difference]: Without dead ends: 7612 [2022-11-21 09:15:45,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-21 09:15:45,247 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 227 mSDsluCounter, 4345 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:45,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 5515 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:15:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7612 states. [2022-11-21 09:15:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7612 to 7352. [2022-11-21 09:15:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 5254 states have (on average 1.3207080319756377) internal successors, (6939), 5412 states have internal predecessors, (6939), 1558 states have call successors, (1558), 352 states have call predecessors, (1558), 539 states have return successors, (2225), 1675 states have call predecessors, (2225), 1555 states have call successors, (2225) [2022-11-21 09:15:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10722 transitions. [2022-11-21 09:15:46,106 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10722 transitions. Word has length 164 [2022-11-21 09:15:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:46,106 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 10722 transitions. [2022-11-21 09:15:46,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 09:15:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10722 transitions. [2022-11-21 09:15:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-21 09:15:46,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:46,123 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:46,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 09:15:46,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:46,334 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:46,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1879769671, now seen corresponding path program 2 times [2022-11-21 09:15:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:46,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451693075] [2022-11-21 09:15:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 09:15:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 09:15:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 09:15:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 09:15:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 09:15:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-21 09:15:47,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:47,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451693075] [2022-11-21 09:15:47,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451693075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:47,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664538906] [2022-11-21 09:15:47,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:15:47,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:47,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:47,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:47,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 09:15:48,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:15:48,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:15:48,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 09:15:48,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 09:15:48,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:15:48,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664538906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:48,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:15:48,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-21 09:15:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231562970] [2022-11-21 09:15:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:15:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:15:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:15:48,829 INFO L87 Difference]: Start difference. First operand 7352 states and 10722 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 09:15:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:49,452 INFO L93 Difference]: Finished difference Result 14696 states and 21958 transitions. [2022-11-21 09:15:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:15:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2022-11-21 09:15:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:49,494 INFO L225 Difference]: With dead ends: 14696 [2022-11-21 09:15:49,494 INFO L226 Difference]: Without dead ends: 7352 [2022-11-21 09:15:49,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:15:49,528 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 0 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:49,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4098 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:15:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2022-11-21 09:15:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 7352. [2022-11-21 09:15:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 5254 states have (on average 1.3207080319756377) internal successors, (6939), 5412 states have internal predecessors, (6939), 1558 states have call successors, (1558), 352 states have call predecessors, (1558), 539 states have return successors, (2217), 1675 states have call predecessors, (2217), 1555 states have call successors, (2217) [2022-11-21 09:15:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10714 transitions. [2022-11-21 09:15:50,373 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10714 transitions. Word has length 170 [2022-11-21 09:15:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:50,374 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 10714 transitions. [2022-11-21 09:15:50,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-21 09:15:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10714 transitions. [2022-11-21 09:15:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-21 09:15:50,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:50,389 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:50,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:15:50,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 09:15:50,601 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash 222400003, now seen corresponding path program 1 times [2022-11-21 09:15:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:50,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231534662] [2022-11-21 09:15:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:50,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 09:15:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 09:15:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 09:15:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:15:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 09:15:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-21 09:15:51,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:51,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231534662] [2022-11-21 09:15:51,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231534662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:51,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620842216] [2022-11-21 09:15:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:51,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:51,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:51,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:51,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 09:15:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:52,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-21 09:15:52,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 09:15:52,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:15:52,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620842216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:52,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:15:52,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-11-21 09:15:52,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168537071] [2022-11-21 09:15:52,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:52,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:15:52,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:15:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-11-21 09:15:52,766 INFO L87 Difference]: Start difference. First operand 7352 states and 10714 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-21 09:15:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:55,120 INFO L93 Difference]: Finished difference Result 17180 states and 25497 transitions. [2022-11-21 09:15:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:15:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 176 [2022-11-21 09:15:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:55,166 INFO L225 Difference]: With dead ends: 17180 [2022-11-21 09:15:55,166 INFO L226 Difference]: Without dead ends: 9852 [2022-11-21 09:15:55,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 09:15:55,191 INFO L413 NwaCegarLoop]: 2016 mSDtfsCounter, 2252 mSDsluCounter, 17333 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 19349 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:55,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 19349 Invalid, 820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [198 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 09:15:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9852 states. [2022-11-21 09:15:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9852 to 7327. [2022-11-21 09:15:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7327 states, 5237 states have (on average 1.320030551842658) internal successors, (6913), 5395 states have internal predecessors, (6913), 1550 states have call successors, (1550), 352 states have call predecessors, (1550), 539 states have return successors, (2209), 1667 states have call predecessors, (2209), 1547 states have call successors, (2209) [2022-11-21 09:15:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 10672 transitions. [2022-11-21 09:15:56,127 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 10672 transitions. Word has length 176 [2022-11-21 09:15:56,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:56,128 INFO L495 AbstractCegarLoop]: Abstraction has 7327 states and 10672 transitions. [2022-11-21 09:15:56,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-21 09:15:56,129 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 10672 transitions. [2022-11-21 09:15:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-21 09:15:56,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:56,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:56,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 09:15:56,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 09:15:56,357 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:56,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1907114897, now seen corresponding path program 1 times [2022-11-21 09:15:56,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:56,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116652943] [2022-11-21 09:15:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:15:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 09:15:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 09:15:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 09:15:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:15:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:15:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 09:15:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-21 09:15:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:15:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:15:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:15:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:15:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:15:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-21 09:15:58,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:58,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116652943] [2022-11-21 09:15:58,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116652943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:58,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734502889] [2022-11-21 09:15:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:58,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:58,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:58,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:58,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 09:15:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:59,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 09:15:59,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 09:15:59,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:16:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-21 09:16:00,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734502889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:16:00,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:16:00,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 24 [2022-11-21 09:16:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235127106] [2022-11-21 09:16:00,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:16:00,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 09:16:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:00,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 09:16:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:16:00,246 INFO L87 Difference]: Start difference. First operand 7327 states and 10672 transitions. Second operand has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 15 states have internal predecessors, (244), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) [2022-11-21 09:16:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:16:15,853 INFO L93 Difference]: Finished difference Result 17235 states and 25720 transitions. [2022-11-21 09:16:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 09:16:15,854 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 15 states have internal predecessors, (244), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) Word has length 196 [2022-11-21 09:16:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:16:15,895 INFO L225 Difference]: With dead ends: 17235 [2022-11-21 09:16:15,896 INFO L226 Difference]: Without dead ends: 9932 [2022-11-21 09:16:15,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=280, Invalid=1280, Unknown=0, NotChecked=0, Total=1560 [2022-11-21 09:16:15,916 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 6239 mSDsluCounter, 11721 mSDsCounter, 0 mSdLazyCounter, 10369 mSolverCounterSat, 4047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6351 SdHoareTripleChecker+Valid, 12909 SdHoareTripleChecker+Invalid, 14416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4047 IncrementalHoareTripleChecker+Valid, 10369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:16:15,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6351 Valid, 12909 Invalid, 14416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4047 Valid, 10369 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2022-11-21 09:16:15,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2022-11-21 09:16:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 7099. [2022-11-21 09:16:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7099 states, 5085 states have (on average 1.32055063913471) internal successors, (6715), 5235 states have internal predecessors, (6715), 1480 states have call successors, (1480), 348 states have call predecessors, (1480), 533 states have return successors, (2119), 1599 states have call predecessors, (2119), 1477 states have call successors, (2119) [2022-11-21 09:16:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 10314 transitions. [2022-11-21 09:16:16,947 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 10314 transitions. Word has length 196 [2022-11-21 09:16:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:16:16,947 INFO L495 AbstractCegarLoop]: Abstraction has 7099 states and 10314 transitions. [2022-11-21 09:16:16,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.166666666666666) internal successors, (244), 15 states have internal predecessors, (244), 6 states have call successors, (60), 12 states have call predecessors, (60), 6 states have return successors, (50), 8 states have call predecessors, (50), 6 states have call successors, (50) [2022-11-21 09:16:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 10314 transitions. [2022-11-21 09:16:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-21 09:16:16,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:16:16,959 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:16,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 09:16:17,173 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:16:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2083453667, now seen corresponding path program 2 times [2022-11-21 09:16:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:17,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140883018] [2022-11-21 09:16:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:16:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:17,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:16:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:16:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:17,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 09:16:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:16:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 09:16:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:16:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 09:16:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 09:16:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:16:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:16:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 09:16:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:16:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-21 09:16:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:16:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:16:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:16:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:16:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:16:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-21 09:16:18,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140883018] [2022-11-21 09:16:18,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140883018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:18,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276823994] [2022-11-21 09:16:18,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:16:18,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:18,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:18,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:18,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 09:16:19,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:16:19,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:16:19,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 148 conjunts are in the unsatisfiable core [2022-11-21 09:16:19,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:16:19,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 09:16:19,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 09:16:20,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-21 09:16:20,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-21 09:16:20,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2022-11-21 09:16:20,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-21 09:16:20,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-21 09:16:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 09:16:20,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:16:43,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276823994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:43,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:16:43,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 31 [2022-11-21 09:16:43,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170245675] [2022-11-21 09:16:43,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:16:43,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 09:16:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:16:43,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 09:16:43,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1476, Unknown=2, NotChecked=0, Total=1640 [2022-11-21 09:16:43,280 INFO L87 Difference]: Start difference. First operand 7099 states and 10314 transitions. Second operand has 31 states, 30 states have (on average 7.166666666666667) internal successors, (215), 21 states have internal predecessors, (215), 9 states have call successors, (41), 13 states have call predecessors, (41), 9 states have return successors, (37), 11 states have call predecessors, (37), 9 states have call successors, (37) [2022-11-21 09:16:49,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:16:51,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:16:55,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:00,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:02,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:10,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:17,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:24,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:26,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:29,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:41,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:17:48,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:18:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:18:05,818 INFO L93 Difference]: Finished difference Result 29362 states and 45074 transitions. [2022-11-21 09:18:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-11-21 09:18:05,819 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 7.166666666666667) internal successors, (215), 21 states have internal predecessors, (215), 9 states have call successors, (41), 13 states have call predecessors, (41), 9 states have return successors, (37), 11 states have call predecessors, (37), 9 states have call successors, (37) Word has length 196 [2022-11-21 09:18:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:18:05,921 INFO L225 Difference]: With dead ends: 29362 [2022-11-21 09:18:05,921 INFO L226 Difference]: Without dead ends: 22273 [2022-11-21 09:18:05,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 300 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4915 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=2621, Invalid=14669, Unknown=2, NotChecked=0, Total=17292 [2022-11-21 09:18:05,957 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 9196 mSDsluCounter, 24650 mSDsCounter, 0 mSdLazyCounter, 32147 mSolverCounterSat, 7139 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9318 SdHoareTripleChecker+Valid, 26179 SdHoareTripleChecker+Invalid, 39298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 7139 IncrementalHoareTripleChecker+Valid, 32147 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:18:05,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9318 Valid, 26179 Invalid, 39298 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [7139 Valid, 32147 Invalid, 12 Unknown, 0 Unchecked, 69.3s Time] [2022-11-21 09:18:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22273 states. [2022-11-21 09:18:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22273 to 17754. [2022-11-21 09:18:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17754 states, 12748 states have (on average 1.3331502980859742) internal successors, (16995), 13230 states have internal predecessors, (16995), 3578 states have call successors, (3578), 892 states have call predecessors, (3578), 1427 states have return successors, (6351), 3815 states have call predecessors, (6351), 3575 states have call successors, (6351) [2022-11-21 09:18:09,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17754 states to 17754 states and 26924 transitions. [2022-11-21 09:18:09,256 INFO L78 Accepts]: Start accepts. Automaton has 17754 states and 26924 transitions. Word has length 196 [2022-11-21 09:18:09,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:18:09,256 INFO L495 AbstractCegarLoop]: Abstraction has 17754 states and 26924 transitions. [2022-11-21 09:18:09,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 7.166666666666667) internal successors, (215), 21 states have internal predecessors, (215), 9 states have call successors, (41), 13 states have call predecessors, (41), 9 states have return successors, (37), 11 states have call predecessors, (37), 9 states have call successors, (37) [2022-11-21 09:18:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 17754 states and 26924 transitions. [2022-11-21 09:18:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-21 09:18:09,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:18:09,278 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:18:09,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 09:18:09,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 09:18:09,495 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:18:09,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:18:09,496 INFO L85 PathProgramCache]: Analyzing trace with hash 20655744, now seen corresponding path program 1 times [2022-11-21 09:18:09,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:18:09,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406907194] [2022-11-21 09:18:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:18:09,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:18:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:18:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 09:18:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 09:18:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:18:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 09:18:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:18:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 09:18:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:18:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:18:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:18:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 09:18:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:18:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:18:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-21 09:18:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:18:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:18:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:18:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:18:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:18:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-21 09:18:10,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:18:10,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406907194] [2022-11-21 09:18:10,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406907194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:18:10,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629725091] [2022-11-21 09:18:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:18:10,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:18:10,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:18:10,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:18:10,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 09:18:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:11,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 09:18:11,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:18:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-21 09:18:11,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:18:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-21 09:18:12,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629725091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:18:12,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:18:12,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2022-11-21 09:18:12,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671231643] [2022-11-21 09:18:12,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:18:12,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 09:18:12,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:18:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 09:18:12,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-21 09:18:12,395 INFO L87 Difference]: Start difference. First operand 17754 states and 26924 transitions. Second operand has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (52), 10 states have call predecessors, (52), 5 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-21 09:18:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:18:22,929 INFO L93 Difference]: Finished difference Result 37099 states and 56471 transitions. [2022-11-21 09:18:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 09:18:22,930 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (52), 10 states have call predecessors, (52), 5 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 204 [2022-11-21 09:18:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:18:23,015 INFO L225 Difference]: With dead ends: 37099 [2022-11-21 09:18:23,015 INFO L226 Difference]: Without dead ends: 19364 [2022-11-21 09:18:23,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 09:18:23,073 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 2187 mSDsluCounter, 4450 mSDsCounter, 0 mSdLazyCounter, 3307 mSolverCounterSat, 1613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 5233 SdHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1613 IncrementalHoareTripleChecker+Valid, 3307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:18:23,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2242 Valid, 5233 Invalid, 4920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1613 Valid, 3307 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-21 09:18:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19364 states. [2022-11-21 09:18:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19364 to 17758. [2022-11-21 09:18:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17758 states, 12752 states have (on average 1.3331242158092849) internal successors, (17000), 13234 states have internal predecessors, (17000), 3578 states have call successors, (3578), 892 states have call predecessors, (3578), 1427 states have return successors, (6351), 3815 states have call predecessors, (6351), 3575 states have call successors, (6351) [2022-11-21 09:18:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17758 states to 17758 states and 26929 transitions. [2022-11-21 09:18:25,912 INFO L78 Accepts]: Start accepts. Automaton has 17758 states and 26929 transitions. Word has length 204 [2022-11-21 09:18:25,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:18:25,912 INFO L495 AbstractCegarLoop]: Abstraction has 17758 states and 26929 transitions. [2022-11-21 09:18:25,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 13 states have internal predecessors, (179), 2 states have call successors, (52), 10 states have call predecessors, (52), 5 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-21 09:18:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 17758 states and 26929 transitions. [2022-11-21 09:18:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-21 09:18:25,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:18:25,924 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:18:25,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 09:18:26,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 09:18:26,127 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:18:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:18:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1851771552, now seen corresponding path program 2 times [2022-11-21 09:18:26,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:18:26,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589174437] [2022-11-21 09:18:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:18:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:18:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:18:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 09:18:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 09:18:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:18:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:18:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:18:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 09:18:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 09:18:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:18:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:18:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 09:18:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:18:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:18:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:18:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-21 09:18:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:18:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 09:18:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:18:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 09:18:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 09:18:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:18:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-21 09:18:30,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:18:30,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589174437] [2022-11-21 09:18:30,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589174437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:18:30,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:18:30,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 09:18:30,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624120220] [2022-11-21 09:18:30,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:18:30,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 09:18:30,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:18:30,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 09:18:30,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-21 09:18:30,053 INFO L87 Difference]: Start difference. First operand 17758 states and 26929 transitions. Second operand has 22 states, 22 states have (on average 5.590909090909091) internal successors, (123), 13 states have internal predecessors, (123), 8 states have call successors, (22), 10 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-21 09:18:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:18:54,701 INFO L93 Difference]: Finished difference Result 51334 states and 79134 transitions. [2022-11-21 09:18:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 09:18:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.590909090909091) internal successors, (123), 13 states have internal predecessors, (123), 8 states have call successors, (22), 10 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 7 states have call successors, (22) Word has length 206 [2022-11-21 09:18:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:18:54,972 INFO L225 Difference]: With dead ends: 51334 [2022-11-21 09:18:54,972 INFO L226 Difference]: Without dead ends: 33600 [2022-11-21 09:18:55,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=649, Invalid=2321, Unknown=0, NotChecked=0, Total=2970 [2022-11-21 09:18:55,029 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 9231 mSDsluCounter, 8015 mSDsCounter, 0 mSdLazyCounter, 8929 mSolverCounterSat, 5870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9295 SdHoareTripleChecker+Valid, 8864 SdHoareTripleChecker+Invalid, 14799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5870 IncrementalHoareTripleChecker+Valid, 8929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:18:55,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9295 Valid, 8864 Invalid, 14799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5870 Valid, 8929 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2022-11-21 09:18:55,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33600 states. [2022-11-21 09:19:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33600 to 29154. [2022-11-21 09:19:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29154 states, 20952 states have (on average 1.334860633829706) internal successors, (27968), 21762 states have internal predecessors, (27968), 5894 states have call successors, (5894), 1496 states have call predecessors, (5894), 2307 states have return successors, (10147), 6199 states have call predecessors, (10147), 5891 states have call successors, (10147) [2022-11-21 09:19:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29154 states to 29154 states and 44009 transitions. [2022-11-21 09:19:00,543 INFO L78 Accepts]: Start accepts. Automaton has 29154 states and 44009 transitions. Word has length 206 [2022-11-21 09:19:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:19:00,544 INFO L495 AbstractCegarLoop]: Abstraction has 29154 states and 44009 transitions. [2022-11-21 09:19:00,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.590909090909091) internal successors, (123), 13 states have internal predecessors, (123), 8 states have call successors, (22), 10 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-21 09:19:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 29154 states and 44009 transitions. [2022-11-21 09:19:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-21 09:19:00,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:19:00,556 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:19:00,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 09:19:00,557 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:19:00,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:19:00,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2099838639, now seen corresponding path program 1 times [2022-11-21 09:19:00,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:19:00,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051036728] [2022-11-21 09:19:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:19:00,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:19:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:00,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:19:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 09:19:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 09:19:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:19:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 09:19:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 09:19:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:19:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 09:19:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:19:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-21 09:19:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-21 09:19:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-21 09:19:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-21 09:19:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-21 09:19:01,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:19:01,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051036728] [2022-11-21 09:19:01,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051036728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:19:01,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:19:01,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 09:19:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276798799] [2022-11-21 09:19:01,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:19:01,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:19:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:19:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:19:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:19:01,325 INFO L87 Difference]: Start difference. First operand 29154 states and 44009 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-21 09:19:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:19:22,831 INFO L93 Difference]: Finished difference Result 100613 states and 154967 transitions. [2022-11-21 09:19:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:19:22,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 202 [2022-11-21 09:19:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:19:23,109 INFO L225 Difference]: With dead ends: 100613 [2022-11-21 09:19:23,109 INFO L226 Difference]: Without dead ends: 71488 [2022-11-21 09:19:23,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:19:23,182 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 5063 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 3416 mSolverCounterSat, 3459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 6875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3459 IncrementalHoareTripleChecker+Valid, 3416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:19:23,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5166 Valid, 4435 Invalid, 6875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3459 Valid, 3416 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-21 09:19:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71488 states. [2022-11-21 09:19:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71488 to 28756. [2022-11-21 09:19:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28756 states, 20644 states have (on average 1.3364658012013175) internal successors, (27590), 21424 states have internal predecessors, (27590), 5864 states have call successors, (5864), 1496 states have call predecessors, (5864), 2247 states have return successors, (9863), 6139 states have call predecessors, (9863), 5861 states have call successors, (9863) [2022-11-21 09:19:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28756 states to 28756 states and 43317 transitions. [2022-11-21 09:19:29,307 INFO L78 Accepts]: Start accepts. Automaton has 28756 states and 43317 transitions. Word has length 202 [2022-11-21 09:19:29,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:19:29,308 INFO L495 AbstractCegarLoop]: Abstraction has 28756 states and 43317 transitions. [2022-11-21 09:19:29,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-21 09:19:29,308 INFO L276 IsEmpty]: Start isEmpty. Operand 28756 states and 43317 transitions. [2022-11-21 09:19:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-21 09:19:29,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:19:29,319 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:19:29,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 09:19:29,319 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:19:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:19:29,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1184011407, now seen corresponding path program 1 times [2022-11-21 09:19:29,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:19:29,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972127985] [2022-11-21 09:19:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:19:29,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:19:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 09:19:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 09:19:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 09:19:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:19:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:29,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 09:19:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 09:19:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 09:19:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-21 09:19:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:19:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-21 09:19:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-21 09:19:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-21 09:19:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-21 09:19:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-21 09:19:30,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:19:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972127985] [2022-11-21 09:19:30,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972127985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:19:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904725907] [2022-11-21 09:19:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:19:30,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:19:30,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:19:30,134 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:19:30,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afea4160-fca0-4c21-93e0-f056aadf8b41/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 09:19:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:30,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 3256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 09:19:30,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:19:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-21 09:19:31,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:19:31,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904725907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:19:31,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:19:31,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2022-11-21 09:19:31,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758721186] [2022-11-21 09:19:31,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:19:31,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:19:31,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:19:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:19:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:19:31,320 INFO L87 Difference]: Start difference. First operand 28756 states and 43317 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)