./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/printf-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/printf-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:58:20,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:58:20,743 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:58:20,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:58:20,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:58:20,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:58:20,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:58:20,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:58:20,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:58:20,786 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:58:20,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:58:20,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:58:20,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:58:20,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:58:20,790 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:58:20,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:58:20,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:58:20,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:58:20,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:58:20,793 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:58:20,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:58:20,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:58:20,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:58:20,796 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:58:20,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:58:20,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:58:20,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:58:20,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:58:20,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:20,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:58:20,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:58:20,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:58:20,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:58:20,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:58:20,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:58:20,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:58:20,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:58:20,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:58:20,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:58:20,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1277896718e4a2de50a241e859788fd2cca972852ccec2fe2acb0e0515dfcaa [2023-11-26 11:58:21,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:58:21,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:58:21,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:58:21,240 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:58:21,241 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:58:21,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-26 11:58:24,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:58:25,301 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:58:25,302 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i [2023-11-26 11:58:25,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/data/d5ab8329b/dab5454af3f6405081a43477ed85d01c/FLAG94e18da2b [2023-11-26 11:58:25,359 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/data/d5ab8329b/dab5454af3f6405081a43477ed85d01c [2023-11-26 11:58:25,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:58:25,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:58:25,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:25,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:58:25,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:58:25,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:25" (1/1) ... [2023-11-26 11:58:25,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e98eeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:25, skipping insertion in model container [2023-11-26 11:58:25,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:58:25" (1/1) ... [2023-11-26 11:58:25,489 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:58:27,147 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-26 11:58:27,158 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-26 11:58:27,163 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-26 11:58:27,172 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-26 11:58:27,174 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-26 11:58:27,184 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-26 11:58:27,198 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-26 11:58:27,200 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-26 11:58:27,203 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-26 11:58:27,206 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-26 11:58:27,210 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-26 11:58:27,212 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-26 11:58:27,215 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-26 11:58:27,219 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-26 11:58:27,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:27,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:58:27,504 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2023-11-26 11:58:27,506 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2023-11-26 11:58:27,509 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2023-11-26 11:58:27,510 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2023-11-26 11:58:27,512 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2023-11-26 11:58:27,522 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2023-11-26 11:58:27,536 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2023-11-26 11:58:27,539 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2023-11-26 11:58:27,540 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2023-11-26 11:58:27,543 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2023-11-26 11:58:27,547 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2023-11-26 11:58:27,548 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2023-11-26 11:58:27,559 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2023-11-26 11:58:27,562 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2023-11-26 11:58:27,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:58:27,932 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:27,932 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:27,932 WARN L675 CHandler]: The function strtol is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:27,932 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:27,933 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:27,933 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:27,933 WARN L675 CHandler]: The function convert is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:58:27,942 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:58:27,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27 WrapperNode [2023-11-26 11:58:27,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:58:27,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:27,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:58:27,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:58:27,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,125 INFO L138 Inliner]: procedures = 648, calls = 511, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1570 [2023-11-26 11:58:28,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:58:28,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:58:28,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:58:28,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:58:28,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,192 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 11:58:28,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,430 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:58:28,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:58:28,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:58:28,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:58:28,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (1/1) ... [2023-11-26 11:58:28,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:58:28,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:28,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:58:28,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:58:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-26 11:58:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-26 11:58:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-26 11:58:28,514 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-26 11:58:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-26 11:58:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:58:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-26 11:58:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-26 11:58:28,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-26 11:58:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-26 11:58:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-26 11:58:28,515 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-26 11:58:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-26 11:58:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:58:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure get_width_prec [2023-11-26 11:58:28,516 INFO L138 BoogieDeclarations]: Found implementation of procedure get_width_prec [2023-11-26 11:58:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-26 11:58:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-26 11:58:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:58:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-26 11:58:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:58:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 11:58:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:58:28,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:58:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-26 11:58:28,518 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-26 11:58:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-26 11:58:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-26 11:58:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure handle_errors [2023-11-26 11:58:28,518 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_errors [2023-11-26 11:58:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure bb_process_escape_sequence [2023-11-26 11:58:28,519 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_process_escape_sequence [2023-11-26 11:58:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:58:28,519 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:58:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure print_direc [2023-11-26 11:58:28,519 INFO L138 BoogieDeclarations]: Found implementation of procedure print_direc [2023-11-26 11:58:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:58:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 11:58:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 11:58:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-26 11:58:28,520 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-26 11:58:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-26 11:58:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:58:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-11-26 11:58:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtoll [2023-11-26 11:58:28,521 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtoll [2023-11-26 11:58:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure multiconvert [2023-11-26 11:58:28,522 INFO L138 BoogieDeclarations]: Found implementation of procedure multiconvert [2023-11-26 11:58:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-26 11:58:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:58:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-26 11:58:28,522 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-26 11:58:29,014 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:58:29,017 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:58:30,858 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:58:30,933 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:58:30,934 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-26 11:58:30,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:30 BoogieIcfgContainer [2023-11-26 11:58:30,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:58:30,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:58:30,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:58:30,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:58:30,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:58:25" (1/3) ... [2023-11-26 11:58:30,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8d9608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:30, skipping insertion in model container [2023-11-26 11:58:30,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:58:27" (2/3) ... [2023-11-26 11:58:30,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8d9608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:58:30, skipping insertion in model container [2023-11-26 11:58:30,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:58:30" (3/3) ... [2023-11-26 11:58:30,944 INFO L112 eAbstractionObserver]: Analyzing ICFG printf-2.i [2023-11-26 11:58:30,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:58:30,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-26 11:58:31,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:58:31,037 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a532681, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:58:31,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-26 11:58:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 323 states have (on average 1.631578947368421) internal successors, (527), 338 states have internal predecessors, (527), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-26 11:58:31,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:58:31,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:31,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:31,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:31,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1032440798, now seen corresponding path program 1 times [2023-11-26 11:58:31,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:31,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766284170] [2023-11-26 11:58:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:31,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 11:58:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:31,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:31,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766284170] [2023-11-26 11:58:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766284170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:31,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107740632] [2023-11-26 11:58:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:31,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:31,902 INFO L87 Difference]: Start difference. First operand has 391 states, 323 states have (on average 1.631578947368421) internal successors, (527), 338 states have internal predecessors, (527), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:32,196 INFO L93 Difference]: Finished difference Result 781 states and 1245 transitions. [2023-11-26 11:58:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:32,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2023-11-26 11:58:32,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:32,256 INFO L225 Difference]: With dead ends: 781 [2023-11-26 11:58:32,258 INFO L226 Difference]: Without dead ends: 380 [2023-11-26 11:58:32,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:32,277 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 0 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:32,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1054 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:58:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-26 11:58:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-11-26 11:58:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 315 states have (on average 1.4793650793650794) internal successors, (466), 329 states have internal predecessors, (466), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:58:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 542 transitions. [2023-11-26 11:58:32,354 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 542 transitions. Word has length 42 [2023-11-26 11:58:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:32,355 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 542 transitions. [2023-11-26 11:58:32,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 542 transitions. [2023-11-26 11:58:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 11:58:32,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:32,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:32,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:58:32,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:32,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 70884883, now seen corresponding path program 1 times [2023-11-26 11:58:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:32,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442433237] [2023-11-26 11:58:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:32,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:58:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:32,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442433237] [2023-11-26 11:58:32,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442433237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813489742] [2023-11-26 11:58:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:32,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:32,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:32,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:32,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:58:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:33,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:58:33,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:33,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:33,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813489742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:33,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:58:33,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-26 11:58:33,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764326209] [2023-11-26 11:58:33,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:33,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:58:33,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:58:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:33,508 INFO L87 Difference]: Start difference. First operand 380 states and 542 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:58:33,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:33,785 INFO L93 Difference]: Finished difference Result 760 states and 1086 transitions. [2023-11-26 11:58:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:58:33,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-11-26 11:58:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:33,797 INFO L225 Difference]: With dead ends: 760 [2023-11-26 11:58:33,798 INFO L226 Difference]: Without dead ends: 383 [2023-11-26 11:58:33,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:33,802 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 0 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:33,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2038 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:58:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-26 11:58:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2023-11-26 11:58:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 318 states have (on average 1.4748427672955975) internal successors, (469), 332 states have internal predecessors, (469), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:58:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 545 transitions. [2023-11-26 11:58:33,865 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 545 transitions. Word has length 47 [2023-11-26 11:58:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:33,866 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 545 transitions. [2023-11-26 11:58:33,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:58:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 545 transitions. [2023-11-26 11:58:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:58:33,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:33,872 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:33,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:34,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:58:34,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:34,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:34,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1551480797, now seen corresponding path program 2 times [2023-11-26 11:58:34,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:34,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807415034] [2023-11-26 11:58:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:34,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:58:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:58:34,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807415034] [2023-11-26 11:58:34,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807415034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:34,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:34,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:58:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746283348] [2023-11-26 11:58:34,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:34,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:34,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:34,633 INFO L87 Difference]: Start difference. First operand 383 states and 545 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:35,484 INFO L93 Difference]: Finished difference Result 744 states and 1058 transitions. [2023-11-26 11:58:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:35,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-11-26 11:58:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:35,488 INFO L225 Difference]: With dead ends: 744 [2023-11-26 11:58:35,489 INFO L226 Difference]: Without dead ends: 383 [2023-11-26 11:58:35,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:58:35,493 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:35,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1864 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:58:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-26 11:58:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2023-11-26 11:58:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 318 states have (on average 1.471698113207547) internal successors, (468), 332 states have internal predecessors, (468), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:58:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 544 transitions. [2023-11-26 11:58:35,526 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 544 transitions. Word has length 50 [2023-11-26 11:58:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:35,527 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 544 transitions. [2023-11-26 11:58:35,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:35,528 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 544 transitions. [2023-11-26 11:58:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:58:35,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:35,530 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:35,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:58:35,530 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:35,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 831151806, now seen corresponding path program 1 times [2023-11-26 11:58:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704977615] [2023-11-26 11:58:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:36,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:58:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:58:36,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704977615] [2023-11-26 11:58:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704977615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:36,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:36,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:58:36,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828626139] [2023-11-26 11:58:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:36,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:36,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:36,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:36,104 INFO L87 Difference]: Start difference. First operand 383 states and 544 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:36,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:36,959 INFO L93 Difference]: Finished difference Result 765 states and 1092 transitions. [2023-11-26 11:58:36,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:36,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2023-11-26 11:58:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:36,965 INFO L225 Difference]: With dead ends: 765 [2023-11-26 11:58:36,965 INFO L226 Difference]: Without dead ends: 406 [2023-11-26 11:58:36,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:58:36,968 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 18 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:36,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1836 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:58:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-26 11:58:36,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 399. [2023-11-26 11:58:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 334 states have (on average 1.4760479041916168) internal successors, (493), 348 states have internal predecessors, (493), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:58:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 569 transitions. [2023-11-26 11:58:36,987 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 569 transitions. Word has length 51 [2023-11-26 11:58:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:36,988 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 569 transitions. [2023-11-26 11:58:36,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 569 transitions. [2023-11-26 11:58:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:58:36,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:36,990 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:36,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:58:36,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:36,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash 987465916, now seen corresponding path program 1 times [2023-11-26 11:58:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692323037] [2023-11-26 11:58:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:58:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:37,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:37,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692323037] [2023-11-26 11:58:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692323037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:37,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622404365] [2023-11-26 11:58:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:37,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:37,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:37,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:37,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:58:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:37,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:58:37,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:38,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:38,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622404365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:38,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:58:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-11-26 11:58:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281530589] [2023-11-26 11:58:38,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:38,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:58:38,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:38,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:58:38,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:58:38,110 INFO L87 Difference]: Start difference. First operand 399 states and 569 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:58:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:38,369 INFO L93 Difference]: Finished difference Result 798 states and 1143 transitions. [2023-11-26 11:58:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:58:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2023-11-26 11:58:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:38,373 INFO L225 Difference]: With dead ends: 798 [2023-11-26 11:58:38,373 INFO L226 Difference]: Without dead ends: 405 [2023-11-26 11:58:38,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:58:38,376 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:38,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2542 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:58:38,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-26 11:58:38,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2023-11-26 11:58:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 340 states have (on average 1.4676470588235293) internal successors, (499), 354 states have internal predecessors, (499), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:58:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 575 transitions. [2023-11-26 11:58:38,394 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 575 transitions. Word has length 51 [2023-11-26 11:58:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:38,395 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 575 transitions. [2023-11-26 11:58:38,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:58:38,395 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 575 transitions. [2023-11-26 11:58:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:58:38,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:38,397 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:38,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:38,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:38,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:38,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:38,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1286284164, now seen corresponding path program 2 times [2023-11-26 11:58:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:38,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355776012] [2023-11-26 11:58:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:38,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:58:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 11:58:39,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:39,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355776012] [2023-11-26 11:58:39,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355776012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:39,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:39,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:58:39,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067779639] [2023-11-26 11:58:39,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:39,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:58:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:39,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:58:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:58:39,436 INFO L87 Difference]: Start difference. First operand 405 states and 575 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:39,862 INFO L93 Difference]: Finished difference Result 795 states and 1133 transitions. [2023-11-26 11:58:39,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:58:39,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-11-26 11:58:39,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:39,866 INFO L225 Difference]: With dead ends: 795 [2023-11-26 11:58:39,866 INFO L226 Difference]: Without dead ends: 408 [2023-11-26 11:58:39,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:39,869 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 126 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:39,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2362 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:58:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-26 11:58:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 406. [2023-11-26 11:58:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 341 states have (on average 1.466275659824047) internal successors, (500), 355 states have internal predecessors, (500), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:58:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 576 transitions. [2023-11-26 11:58:39,889 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 576 transitions. Word has length 57 [2023-11-26 11:58:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:39,889 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 576 transitions. [2023-11-26 11:58:39,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 576 transitions. [2023-11-26 11:58:39,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:58:39,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:39,891 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:58:39,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:39,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash 559512038, now seen corresponding path program 1 times [2023-11-26 11:58:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624277415] [2023-11-26 11:58:39,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:39,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:58:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 11:58:40,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:40,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624277415] [2023-11-26 11:58:40,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624277415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:40,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:40,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:40,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235509269] [2023-11-26 11:58:40,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:40,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:40,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:40,186 INFO L87 Difference]: Start difference. First operand 406 states and 576 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:40,368 INFO L93 Difference]: Finished difference Result 797 states and 1136 transitions. [2023-11-26 11:58:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-11-26 11:58:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:40,372 INFO L225 Difference]: With dead ends: 797 [2023-11-26 11:58:40,373 INFO L226 Difference]: Without dead ends: 407 [2023-11-26 11:58:40,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:40,376 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:40,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1018 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:58:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-26 11:58:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2023-11-26 11:58:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 342 states have (on average 1.4649122807017543) internal successors, (501), 356 states have internal predecessors, (501), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:58:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 577 transitions. [2023-11-26 11:58:40,402 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 577 transitions. Word has length 60 [2023-11-26 11:58:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:40,402 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 577 transitions. [2023-11-26 11:58:40,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 577 transitions. [2023-11-26 11:58:40,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:58:40,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:40,405 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:40,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:58:40,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:40,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:40,406 INFO L85 PathProgramCache]: Analyzing trace with hash 477092071, now seen corresponding path program 1 times [2023-11-26 11:58:40,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:40,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987699493] [2023-11-26 11:58:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:40,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:58:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 11:58:40,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:40,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987699493] [2023-11-26 11:58:40,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987699493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:40,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614359166] [2023-11-26 11:58:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:40,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:40,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:40,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:40,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:58:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:41,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:58:41,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 11:58:41,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 11:58:41,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614359166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:41,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:58:41,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 11:58:41,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211565109] [2023-11-26 11:58:41,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:41,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:58:41,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:41,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:58:41,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:41,435 INFO L87 Difference]: Start difference. First operand 407 states and 577 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:41,702 INFO L93 Difference]: Finished difference Result 801 states and 1142 transitions. [2023-11-26 11:58:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:58:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-11-26 11:58:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:41,706 INFO L225 Difference]: With dead ends: 801 [2023-11-26 11:58:41,706 INFO L226 Difference]: Without dead ends: 410 [2023-11-26 11:58:41,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:41,709 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:41,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2034 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:58:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-26 11:58:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2023-11-26 11:58:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 345 states have (on average 1.4608695652173913) internal successors, (504), 359 states have internal predecessors, (504), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-26 11:58:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 580 transitions. [2023-11-26 11:58:41,752 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 580 transitions. Word has length 61 [2023-11-26 11:58:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:41,753 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 580 transitions. [2023-11-26 11:58:41,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:41,754 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 580 transitions. [2023-11-26 11:58:41,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:58:41,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:41,755 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:41,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:41,966 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:41,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1668919846, now seen corresponding path program 2 times [2023-11-26 11:58:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:41,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994801358] [2023-11-26 11:58:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:41,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:58:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-26 11:58:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994801358] [2023-11-26 11:58:42,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994801358] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791059295] [2023-11-26 11:58:42,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:58:42,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:42,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:42,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:42,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:58:42,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:58:42,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:58:42,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-26 11:58:42,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:43,057 INFO L378 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 31 treesize of output 19 [2023-11-26 11:58:43,064 INFO L378 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 25 treesize of output 13 [2023-11-26 11:58:43,118 INFO L378 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 15 treesize of output 1 [2023-11-26 11:58:43,123 INFO L378 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 15 treesize of output 1 [2023-11-26 11:58:43,172 INFO L378 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 25 treesize of output 17 [2023-11-26 11:58:43,176 INFO L378 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 21 treesize of output 13 [2023-11-26 11:58:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-26 11:58:43,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:43,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791059295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:43,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:43,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-26 11:58:43,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898014204] [2023-11-26 11:58:43,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:43,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:58:43,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:58:43,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:58:43,389 INFO L87 Difference]: Start difference. First operand 410 states and 580 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:44,897 INFO L93 Difference]: Finished difference Result 581 states and 836 transitions. [2023-11-26 11:58:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:58:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-11-26 11:58:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:44,902 INFO L225 Difference]: With dead ends: 581 [2023-11-26 11:58:44,902 INFO L226 Difference]: Without dead ends: 565 [2023-11-26 11:58:44,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:58:44,903 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 437 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:44,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 3082 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 11:58:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-11-26 11:58:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 525. [2023-11-26 11:58:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 452 states have (on average 1.4845132743362832) internal successors, (671), 468 states have internal predecessors, (671), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-26 11:58:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 761 transitions. [2023-11-26 11:58:44,933 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 761 transitions. Word has length 64 [2023-11-26 11:58:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:44,934 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 761 transitions. [2023-11-26 11:58:44,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 761 transitions. [2023-11-26 11:58:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:58:44,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:44,936 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:44,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:45,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:45,150 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:45,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:45,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1493945153, now seen corresponding path program 1 times [2023-11-26 11:58:45,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:45,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459362269] [2023-11-26 11:58:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:58:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-26 11:58:45,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:45,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459362269] [2023-11-26 11:58:45,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459362269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:45,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:45,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:58:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142664608] [2023-11-26 11:58:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:45,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:58:45,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:58:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:45,775 INFO L87 Difference]: Start difference. First operand 525 states and 761 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:46,547 INFO L93 Difference]: Finished difference Result 1162 states and 1713 transitions. [2023-11-26 11:58:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:58:46,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-11-26 11:58:46,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:46,553 INFO L225 Difference]: With dead ends: 1162 [2023-11-26 11:58:46,553 INFO L226 Difference]: Without dead ends: 672 [2023-11-26 11:58:46,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:58:46,556 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 283 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:46,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 3650 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:58:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-26 11:58:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 524. [2023-11-26 11:58:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 451 states have (on average 1.483370288248337) internal successors, (669), 467 states have internal predecessors, (669), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-26 11:58:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 759 transitions. [2023-11-26 11:58:46,594 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 759 transitions. Word has length 68 [2023-11-26 11:58:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:46,595 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 759 transitions. [2023-11-26 11:58:46,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 759 transitions. [2023-11-26 11:58:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:58:46,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:46,603 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 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] [2023-11-26 11:58:46,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:58:46,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:46,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1283083644, now seen corresponding path program 1 times [2023-11-26 11:58:46,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:46,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906160729] [2023-11-26 11:58:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:46,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:47,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:58:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-26 11:58:47,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:47,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906160729] [2023-11-26 11:58:47,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906160729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:47,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056877269] [2023-11-26 11:58:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:47,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:47,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:47,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:47,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:58:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:47,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:58:47,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-26 11:58:47,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:58:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-26 11:58:48,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056877269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:58:48,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:58:48,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-26 11:58:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728250238] [2023-11-26 11:58:48,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:58:48,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:58:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:58:48,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:58:48,031 INFO L87 Difference]: Start difference. First operand 524 states and 759 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:48,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:48,349 INFO L93 Difference]: Finished difference Result 1038 states and 1512 transitions. [2023-11-26 11:58:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:58:48,350 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-11-26 11:58:48,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:48,354 INFO L225 Difference]: With dead ends: 1038 [2023-11-26 11:58:48,354 INFO L226 Difference]: Without dead ends: 530 [2023-11-26 11:58:48,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:58:48,358 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 0 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:48,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2026 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:58:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-11-26 11:58:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2023-11-26 11:58:48,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 457 states have (on average 1.4770240700218817) internal successors, (675), 473 states have internal predecessors, (675), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-26 11:58:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 765 transitions. [2023-11-26 11:58:48,389 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 765 transitions. Word has length 69 [2023-11-26 11:58:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:48,390 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 765 transitions. [2023-11-26 11:58:48,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:58:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 765 transitions. [2023-11-26 11:58:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 11:58:48,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:48,392 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 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] [2023-11-26 11:58:48,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 11:58:48,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:48,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting print_direcErr0ASSERT_VIOLATIONERROR_FUNCTION === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-11-26 11:58:48,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:48,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1666272996, now seen corresponding path program 2 times [2023-11-26 11:58:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286107173] [2023-11-26 11:58:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:48,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:58:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-26 11:58:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286107173] [2023-11-26 11:58:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286107173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812623675] [2023-11-26 11:58:58,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:58:58,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:58,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:58,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:58,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81ab9bee-1711-426e-86a1-c3c5f33846f8/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:58:59,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:58:59,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:58:59,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-26 11:58:59,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:59,562 INFO L378 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 15 treesize of output 11 [2023-11-26 11:58:59,589 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-26 11:58:59,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-26 11:58:59,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:58:59,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 89 treesize of output 75 [2023-11-26 11:58:59,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:58:59,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 61 [2023-11-26 11:58:59,725 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:58:59,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 79 [2023-11-26 11:58:59,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:58:59,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:58:59,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:58:59,773 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-11-26 11:58:59,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 34 [2023-11-26 11:58:59,979 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:58:59,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:58:59,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,069 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:59:00,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:59:00,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,204 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:59:00,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:59:00,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,294 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:59:00,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:59:00,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,393 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:59:00,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:59:00,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,496 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:59:00,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:59:00,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,587 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:59:00,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:59:00,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,691 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:59:00,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:59:00,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,790 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-11-26 11:59:00,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 88 [2023-11-26 11:59:00,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 38 [2023-11-26 11:59:00,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 20 [2023-11-26 11:59:00,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-11-26 11:59:01,827 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2023-11-26 11:59:01,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 16 [2023-11-26 11:59:01,876 INFO L378 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 11 treesize of output 7 [2023-11-26 11:59:01,940 INFO L378 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 19 treesize of output 11 [2023-11-26 11:59:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-26 11:59:02,158 INFO L327 TraceCheckSpWp]: Computing backward predicates...