./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:13:38,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:13:38,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:13:38,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:13:38,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:13:38,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:13:38,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:13:38,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:13:38,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:13:38,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:13:38,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:13:38,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:13:38,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:13:38,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:13:38,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:13:38,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:13:38,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:13:38,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:13:38,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:13:38,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:13:38,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:13:38,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:13:38,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:13:38,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:13:38,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:13:38,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:13:38,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:13:38,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:13:38,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:13:38,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:13:38,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:13:38,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:13:38,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:13:38,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:13:38,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:13:38,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:13:38,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:13:38,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:13:38,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:13:38,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:13:38,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:13:38,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:13:38,628 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:13:38,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:13:38,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:13:38,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:13:38,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:13:38,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:13:38,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:13:38,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:13:38,632 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:13:38,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:13:38,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:13:38,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:13:38,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:13:38,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:13:38,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:13:38,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:13:38,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:13:38,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:13:38,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:13:38,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:13:38,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:13:38,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:38,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:13:38,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:13:38,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:13:38,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:13:38,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:13:38,639 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:13:38,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:13:38,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:13:38,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 [2022-11-02 20:13:38,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:13:38,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:13:39,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:13:39,004 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:13:39,005 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:13:39,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-02 20:13:39,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/data/119d717cf/7bf602b690bd4e25a3553500c5d0ed5d/FLAG01d783c40 [2022-11-02 20:13:40,249 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:13:40,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-02 20:13:40,310 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/data/119d717cf/7bf602b690bd4e25a3553500c5d0ed5d/FLAG01d783c40 [2022-11-02 20:13:40,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/data/119d717cf/7bf602b690bd4e25a3553500c5d0ed5d [2022-11-02 20:13:40,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:13:40,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:13:40,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:40,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:13:40,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:13:40,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:40" (1/1) ... [2022-11-02 20:13:40,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564b3a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:40, skipping insertion in model container [2022-11-02 20:13:40,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:40" (1/1) ... [2022-11-02 20:13:40,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:13:40,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:13:44,119 WARN L230 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_e14b90b8-e58c-4541-8253-02bdecb7b1d6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2022-11-02 20:13:44,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:44,410 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:13:45,123 WARN L230 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_e14b90b8-e58c-4541-8253-02bdecb7b1d6/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2022-11-02 20:13:45,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:45,370 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:13:45,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45 WrapperNode [2022-11-02 20:13:45,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:45,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:45,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:13:45,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:13:45,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:45,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:46,368 INFO L138 Inliner]: procedures = 359, calls = 7215, calls flagged for inlining = 183, calls inlined = 137, statements flattened = 11745 [2022-11-02 20:13:46,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:46,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:13:46,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:13:46,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:13:46,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:46,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:46,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:46,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:46,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:47,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:47,077 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:47,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:47,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:13:47,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:13:47,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:13:47,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:13:47,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (1/1) ... [2022-11-02 20:13:47,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:47,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:47,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:13:47,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:13:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-02 20:13:47,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-02 20:13:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-02 20:13:47,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-02 20:13:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-02 20:13:47,405 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-02 20:13:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-02 20:13:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 20:13:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-02 20:13:47,406 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-02 20:13:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_recv_bulk_msg [2022-11-02 20:13:47,406 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_recv_bulk_msg [2022-11-02 20:13:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:13:47,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:13:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_save_screen [2022-11-02 20:13:47,407 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_save_screen [2022-11-02 20:13:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_buffers [2022-11-02 20:13:47,407 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_buffers [2022-11-02 20:13:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_disconnect [2022-11-02 20:13:47,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_disconnect [2022-11-02 20:13:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_deinit [2022-11-02 20:13:47,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_deinit [2022-11-02 20:13:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_byte [2022-11-02 20:13:47,408 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_byte [2022-11-02 20:13:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 20:13:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 20:13:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-02 20:13:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-02 20:13:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:13:47,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:13:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_cursor [2022-11-02 20:13:47,410 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_cursor [2022-11-02 20:13:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-11-02 20:13:47,410 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-11-02 20:13:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-02 20:13:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-02 20:13:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_word [2022-11-02 20:13:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_word [2022-11-02 20:13:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:13:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:13:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetReg [2022-11-02 20:13:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetReg [2022-11-02 20:13:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-02 20:13:47,412 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-02 20:13:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb_lock_and_check [2022-11-02 20:13:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb_lock_and_check [2022-11-02 20:13:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:13:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure take_over_console [2022-11-02 20:13:47,413 INFO L138 BoogieDeclarations]: Found implementation of procedure take_over_console [2022-11-02 20:13:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_sisusb_valid [2022-11-02 20:13:47,414 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_sisusb_valid [2022-11-02 20:13:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:13:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegOR [2022-11-02 20:13:47,415 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegOR [2022-11-02 20:13:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2022-11-02 20:13:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2022-11-02 20:13:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-02 20:13:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_check_rbc [2022-11-02 20:13:47,418 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_check_rbc [2022-11-02 20:13:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:13:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:13:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-02 20:13:47,419 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-02 20:13:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_outurb_available [2022-11-02 20:13:47,420 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_outurb_available [2022-11-02 20:13:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_kill_all_busy [2022-11-02 20:13:47,420 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_kill_all_busy [2022-11-02 20:13:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-02 20:13:47,421 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-02 20:13:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-02 20:13:47,421 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-02 20:13:47,422 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getidxreg [2022-11-02 20:13:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getidxreg [2022-11-02 20:13:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-02 20:13:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-02 20:13:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-02 20:13:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-02 20:13:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_writeb [2022-11-02 20:13:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_writeb [2022-11-02 20:13:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-02 20:13:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-02 20:13:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-02 20:13:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_default_mode [2022-11-02 20:13:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_default_mode [2022-11-02 20:13:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_byte [2022-11-02 20:13:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_byte [2022-11-02 20:13:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 20:13:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_DisplayOn [2022-11-02 20:13:47,426 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_DisplayOn [2022-11-02 20:13:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregandor [2022-11-02 20:13:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregandor [2022-11-02 20:13:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_mem_bulk [2022-11-02 20:13:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_mem_bulk [2022-11-02 20:13:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-02 20:13:47,428 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-02 20:13:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbdummycon_init [2022-11-02 20:13:47,429 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbdummycon_init [2022-11-02 20:13:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-02 20:13:47,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-02 20:13:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:13:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetReg [2022-11-02 20:13:47,431 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetReg [2022-11-02 20:13:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_do_font_op [2022-11-02 20:13:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_do_font_op [2022-11-02 20:13:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_init_gfxdevice [2022-11-02 20:13:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_init_gfxdevice [2022-11-02 20:13:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegByte [2022-11-02 20:13:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegByte [2022-11-02 20:13:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_urbs [2022-11-02 20:13:47,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_urbs [2022-11-02 20:13:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-02 20:13:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-02 20:13:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bridge_packet [2022-11-02 20:13:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bridge_packet [2022-11-02 20:13:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-02 20:13:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-02 20:13:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-02 20:13:47,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-02 20:13:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_ioctl [2022-11-02 20:13:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_ioctl [2022-11-02 20:13:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_word [2022-11-02 20:13:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_word [2022-11-02 20:13:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb [2022-11-02 20:13:47,441 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb [2022-11-02 20:13:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:13:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:13:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_cursor [2022-11-02 20:13:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_cursor [2022-11-02 20:13:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_is_inactive [2022-11-02 20:13:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_is_inactive [2022-11-02 20:13:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-02 20:13:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-02 20:13:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_clear_vram [2022-11-02 20:13:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_clear_vram [2022-11-02 20:13:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_pci_config [2022-11-02 20:13:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_pci_config [2022-11-02 20:13:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:13:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-02 20:13:47,453 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-02 20:13:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bulk_msg [2022-11-02 20:13:47,453 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bulk_msg [2022-11-02 20:13:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-02 20:13:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-02 20:13:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:13:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:13:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_readb [2022-11-02 20:13:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_readb [2022-11-02 20:13:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregor [2022-11-02 20:13:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregor [2022-11-02 20:13:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:13:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-02 20:13:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-02 20:13:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-02 20:13:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-02 20:13:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:13:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_packet [2022-11-02 20:13:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_packet [2022-11-02 20:13:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_long [2022-11-02 20:13:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_long [2022-11-02 20:13:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_reset_text_mode [2022-11-02 20:13:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_reset_text_mode [2022-11-02 20:13:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSB_InitPtr [2022-11-02 20:13:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSB_InitPtr [2022-11-02 20:13:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:13:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_pci_config [2022-11-02 20:13:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_pci_config [2022-11-02 20:13:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-02 20:13:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxreg [2022-11-02 20:13:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxreg [2022-11-02 20:13:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegANDOR [2022-11-02 20:13:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegANDOR [2022-11-02 20:13:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 20:13:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 20:13:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_wait_all_out_complete [2022-11-02 20:13:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_wait_all_out_complete [2022-11-02 20:13:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-02 20:13:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-02 20:13:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegAND [2022-11-02 20:13:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegAND [2022-11-02 20:13:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregand [2022-11-02 20:13:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregand [2022-11-02 20:13:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-02 20:13:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-02 20:13:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetSegmentReg [2022-11-02 20:13:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetSegmentReg [2022-11-02 20:13:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_copy_memory [2022-11-02 20:13:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_copy_memory [2022-11-02 20:13:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setreg [2022-11-02 20:13:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setreg [2022-11-02 20:13:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2022-11-02 20:13:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2022-11-02 20:13:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_set_start_address [2022-11-02 20:13:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_set_start_address [2022-11-02 20:13:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-02 20:13:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-02 20:13:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-02 20:13:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-02 20:13:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_WriteDAC [2022-11-02 20:13:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_WriteDAC [2022-11-02 20:13:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_mem_bulk [2022-11-02 20:13:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_mem_bulk [2022-11-02 20:13:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getreg [2022-11-02 20:13:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getreg [2022-11-02 20:13:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSBSetMode [2022-11-02 20:13:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSBSetMode [2022-11-02 20:13:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2022-11-02 20:13:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2022-11-02 20:13:47,465 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_init [2022-11-02 20:13:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_init [2022-11-02 20:13:47,466 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-02 20:13:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-02 20:13:47,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:13:47,466 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_long [2022-11-02 20:13:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_long [2022-11-02 20:13:47,466 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetRegByte [2022-11-02 20:13:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetRegByte [2022-11-02 20:13:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-02 20:13:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-02 20:13:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_triggersr16 [2022-11-02 20:13:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_triggersr16 [2022-11-02 20:13:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-02 20:13:47,468 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-02 20:13:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:13:47,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:13:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_all_free [2022-11-02 20:13:47,468 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_all_free [2022-11-02 20:13:48,603 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:13:48,607 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:14:28,452 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:14:28,481 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:14:28,482 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:14:28,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:28 BoogieIcfgContainer [2022-11-02 20:14:28,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:14:28,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:14:28,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:14:28,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:14:28,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:13:40" (1/3) ... [2022-11-02 20:14:28,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9ed584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:28, skipping insertion in model container [2022-11-02 20:14:28,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:45" (2/3) ... [2022-11-02 20:14:28,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9ed584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:28, skipping insertion in model container [2022-11-02 20:14:28,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:28" (3/3) ... [2022-11-02 20:14:28,506 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-02 20:14:28,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:14:28,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:14:28,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:14:28,713 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66e2c7f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:14:28,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:14:28,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 2753 states, 1882 states have (on average 1.3575982996811902) internal successors, (2555), 1909 states have internal predecessors, (2555), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) [2022-11-02 20:14:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:14:28,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:28,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:28,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash -674524315, now seen corresponding path program 1 times [2022-11-02 20:14:28,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:28,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273555426] [2022-11-02 20:14:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:28,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:14:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:14:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:30,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:30,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273555426] [2022-11-02 20:14:30,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273555426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:30,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:30,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:30,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252339629] [2022-11-02 20:14:30,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:30,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:14:30,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:30,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:14:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:30,835 INFO L87 Difference]: Start difference. First operand has 2753 states, 1882 states have (on average 1.3575982996811902) internal successors, (2555), 1909 states have internal predecessors, (2555), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:14:41,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:14:43,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:14:50,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:15:02,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:15:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:03,385 INFO L93 Difference]: Finished difference Result 5637 states and 8475 transitions. [2022-11-02 20:15:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:15:03,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-02 20:15:03,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:03,471 INFO L225 Difference]: With dead ends: 5637 [2022-11-02 20:15:03,471 INFO L226 Difference]: Without dead ends: 2888 [2022-11-02 20:15:03,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:15:03,509 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 1936 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 4389 mSolverCounterSat, 806 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 4818 SdHoareTripleChecker+Invalid, 5199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 4389 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:03,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 4818 Invalid, 5199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [806 Valid, 4389 Invalid, 4 Unknown, 0 Unchecked, 31.7s Time] [2022-11-02 20:15:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2022-11-02 20:15:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2746. [2022-11-02 20:15:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 1878 states have (on average 1.356762513312034) internal successors, (2548), 1903 states have internal predecessors, (2548), 765 states have call successors, (765), 104 states have call predecessors, (765), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2022-11-02 20:15:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 4072 transitions. [2022-11-02 20:15:03,930 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 4072 transitions. Word has length 19 [2022-11-02 20:15:03,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:03,931 INFO L495 AbstractCegarLoop]: Abstraction has 2746 states and 4072 transitions. [2022-11-02 20:15:03,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:15:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 4072 transitions. [2022-11-02 20:15:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 20:15:03,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:03,933 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] [2022-11-02 20:15:03,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:15:03,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash -34172631, now seen corresponding path program 1 times [2022-11-02 20:15:03,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:03,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784213839] [2022-11-02 20:15:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:05,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:15:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:05,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:15:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:05,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:05,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784213839] [2022-11-02 20:15:05,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784213839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:05,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277384340] [2022-11-02 20:15:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:05,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:05,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:05,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:05,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:15:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:08,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 8402 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:15:08,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:08,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:08,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277384340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:08,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:15:08,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 20:15:08,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926267744] [2022-11-02 20:15:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:08,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:08,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:15:08,277 INFO L87 Difference]: Start difference. First operand 2746 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:08,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:08,696 INFO L93 Difference]: Finished difference Result 2748 states and 4073 transitions. [2022-11-02 20:15:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:08,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-11-02 20:15:08,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:08,723 INFO L225 Difference]: With dead ends: 2748 [2022-11-02 20:15:08,723 INFO L226 Difference]: Without dead ends: 2745 [2022-11-02 20:15:08,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:15:08,728 INFO L413 NwaCegarLoop]: 4068 mSDtfsCounter, 4051 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:08,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4051 Valid, 4070 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-11-02 20:15:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2745. [2022-11-02 20:15:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 1878 states have (on average 1.3562300319488818) internal successors, (2547), 1902 states have internal predecessors, (2547), 764 states have call successors, (764), 104 states have call predecessors, (764), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2022-11-02 20:15:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4070 transitions. [2022-11-02 20:15:08,954 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4070 transitions. Word has length 21 [2022-11-02 20:15:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:08,955 INFO L495 AbstractCegarLoop]: Abstraction has 2745 states and 4070 transitions. [2022-11-02 20:15:08,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4070 transitions. [2022-11-02 20:15:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:15:08,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:08,956 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] [2022-11-02 20:15:09,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:09,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:09,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1061720298, now seen corresponding path program 1 times [2022-11-02 20:15:09,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:09,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489817894] [2022-11-02 20:15:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:09,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:15:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:15:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:10,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:10,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489817894] [2022-11-02 20:15:10,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489817894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:10,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752312977] [2022-11-02 20:15:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:10,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:10,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:10,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:10,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:15:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:13,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 8404 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:15:13,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:13,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:13,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752312977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:13,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:15:13,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 20:15:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310142589] [2022-11-02 20:15:13,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:13,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:13,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:13,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:13,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:15:13,214 INFO L87 Difference]: Start difference. First operand 2745 states and 4070 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:13,917 INFO L93 Difference]: Finished difference Result 7212 states and 10689 transitions. [2022-11-02 20:15:13,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:13,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-02 20:15:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:13,970 INFO L225 Difference]: With dead ends: 7212 [2022-11-02 20:15:13,970 INFO L226 Difference]: Without dead ends: 4482 [2022-11-02 20:15:13,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:15:14,004 INFO L413 NwaCegarLoop]: 6168 mSDtfsCounter, 2758 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 9983 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:14,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 9983 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:15:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2022-11-02 20:15:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4479. [2022-11-02 20:15:14,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 3043 states have (on average 1.341439369043707) internal successors, (4082), 3094 states have internal predecessors, (4082), 1254 states have call successors, (1254), 180 states have call predecessors, (1254), 181 states have return successors, (1261), 1230 states have call predecessors, (1261), 1236 states have call successors, (1261) [2022-11-02 20:15:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6597 transitions. [2022-11-02 20:15:14,435 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6597 transitions. Word has length 22 [2022-11-02 20:15:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:14,436 INFO L495 AbstractCegarLoop]: Abstraction has 4479 states and 6597 transitions. [2022-11-02 20:15:14,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6597 transitions. [2022-11-02 20:15:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:15:14,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:14,439 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] [2022-11-02 20:15:14,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:14,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:14,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:14,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:14,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1444045260, now seen corresponding path program 1 times [2022-11-02 20:15:14,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:14,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902824155] [2022-11-02 20:15:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:14,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:15:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:15:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:15,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:15,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902824155] [2022-11-02 20:15:15,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902824155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:15,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304723119] [2022-11-02 20:15:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:15,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:15,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:15,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:15,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:15:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:18,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 8406 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:15:18,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:18,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:18,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304723119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:18,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:15:18,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-02 20:15:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408683666] [2022-11-02 20:15:18,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:18,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:15:18,584 INFO L87 Difference]: Start difference. First operand 4479 states and 6597 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:19,088 INFO L93 Difference]: Finished difference Result 4481 states and 6598 transitions. [2022-11-02 20:15:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:19,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-02 20:15:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:19,148 INFO L225 Difference]: With dead ends: 4481 [2022-11-02 20:15:19,148 INFO L226 Difference]: Without dead ends: 4470 [2022-11-02 20:15:19,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:15:19,158 INFO L413 NwaCegarLoop]: 4067 mSDtfsCounter, 4047 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4047 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:19,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4047 Valid, 4069 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:15:19,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2022-11-02 20:15:19,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4470. [2022-11-02 20:15:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3037 states have (on average 1.3398090220612446) internal successors, (4069), 3087 states have internal predecessors, (4069), 1251 states have call successors, (1251), 179 states have call predecessors, (1251), 181 states have return successors, (1260), 1229 states have call predecessors, (1260), 1235 states have call successors, (1260) [2022-11-02 20:15:19,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6580 transitions. [2022-11-02 20:15:19,809 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6580 transitions. Word has length 23 [2022-11-02 20:15:19,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:19,809 INFO L495 AbstractCegarLoop]: Abstraction has 4470 states and 6580 transitions. [2022-11-02 20:15:19,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:15:19,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6580 transitions. [2022-11-02 20:15:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:15:19,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:19,824 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:15:19,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:20,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:20,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1942876578, now seen corresponding path program 1 times [2022-11-02 20:15:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:20,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093851688] [2022-11-02 20:15:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:20,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:21,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:15:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:15:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:15:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:21,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:15:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:21,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:15:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:15:21,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:21,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093851688] [2022-11-02 20:15:21,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093851688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:21,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903530762] [2022-11-02 20:15:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:21,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:21,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:21,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:21,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:15:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:23,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 8586 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:15:23,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:15:24,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:24,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903530762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:24,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:15:24,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 20:15:24,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787038139] [2022-11-02 20:15:24,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:24,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:24,153 INFO L87 Difference]: Start difference. First operand 4470 states and 6580 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:15:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:24,655 INFO L93 Difference]: Finished difference Result 9189 states and 13570 transitions. [2022-11-02 20:15:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2022-11-02 20:15:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:24,700 INFO L225 Difference]: With dead ends: 9189 [2022-11-02 20:15:24,700 INFO L226 Difference]: Without dead ends: 4734 [2022-11-02 20:15:24,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:24,735 INFO L413 NwaCegarLoop]: 4099 mSDtfsCounter, 179 mSDsluCounter, 3986 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 8085 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:24,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 8085 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-11-02 20:15:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4707. [2022-11-02 20:15:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 3212 states have (on average 1.3449564134495642) internal successors, (4320), 3269 states have internal predecessors, (4320), 1313 states have call successors, (1313), 179 states have call predecessors, (1313), 181 states have return successors, (1327), 1290 states have call predecessors, (1327), 1297 states have call successors, (1327) [2022-11-02 20:15:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 6960 transitions. [2022-11-02 20:15:25,190 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 6960 transitions. Word has length 48 [2022-11-02 20:15:25,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:25,191 INFO L495 AbstractCegarLoop]: Abstraction has 4707 states and 6960 transitions. [2022-11-02 20:15:25,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:15:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 6960 transitions. [2022-11-02 20:15:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 20:15:25,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:25,196 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:25,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:25,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:25,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -818070145, now seen corresponding path program 1 times [2022-11-02 20:15:25,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:25,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883765981] [2022-11-02 20:15:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:15:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:15:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:15:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:15:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:15:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:15:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:26,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883765981] [2022-11-02 20:15:26,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883765981] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:26,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723360894] [2022-11-02 20:15:26,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:26,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:26,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:26,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:26,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:15:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:29,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 8560 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:15:29,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:15:29,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:15:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:15:29,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723360894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:15:29,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:15:29,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-02 20:15:29,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964188064] [2022-11-02 20:15:29,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:15:29,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:15:29,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:15:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:15:29,599 INFO L87 Difference]: Start difference. First operand 4707 states and 6960 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:15:32,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:15:40,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:15:48,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:15:59,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:00,486 INFO L93 Difference]: Finished difference Result 9608 states and 14235 transitions. [2022-11-02 20:16:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:16:00,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-11-02 20:16:00,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:00,543 INFO L225 Difference]: With dead ends: 9608 [2022-11-02 20:16:00,544 INFO L226 Difference]: Without dead ends: 4912 [2022-11-02 20:16:00,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:16:00,584 INFO L413 NwaCegarLoop]: 3513 mSDtfsCounter, 3866 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 2180 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 5113 SdHoareTripleChecker+Invalid, 6238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2180 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:00,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4430 Valid, 5113 Invalid, 6238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2180 Valid, 4054 Invalid, 4 Unknown, 0 Unchecked, 30.1s Time] [2022-11-02 20:16:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2022-11-02 20:16:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 4772. [2022-11-02 20:16:00,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 3259 states have (on average 1.3445842282908869) internal successors, (4382), 3328 states have internal predecessors, (4382), 1321 states have call successors, (1321), 179 states have call predecessors, (1321), 191 states have return successors, (1361), 1296 states have call predecessors, (1361), 1305 states have call successors, (1361) [2022-11-02 20:16:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 7064 transitions. [2022-11-02 20:16:01,030 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 7064 transitions. Word has length 54 [2022-11-02 20:16:01,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:01,032 INFO L495 AbstractCegarLoop]: Abstraction has 4772 states and 7064 transitions. [2022-11-02 20:16:01,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:16:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 7064 transitions. [2022-11-02 20:16:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 20:16:01,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:01,036 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-02 20:16:01,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:01,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14b90b8-e58c-4541-8253-02bdecb7b1d6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:16:01,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash 10363827, now seen corresponding path program 2 times [2022-11-02 20:16:01,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:01,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637807103] [2022-11-02 20:16:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:16:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:16:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:16:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:16:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:16:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:16:02,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:02,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637807103] [2022-11-02 20:16:02,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637807103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:02,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:02,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:02,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641227711] [2022-11-02 20:16:02,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:02,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:16:02,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:02,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:16:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:16:02,602 INFO L87 Difference]: Start difference. First operand 4772 states and 7064 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:16:08,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:16,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:29,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:30,837 INFO L93 Difference]: Finished difference Result 9660 states and 14341 transitions. [2022-11-02 20:16:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:16:30,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2022-11-02 20:16:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:30,876 INFO L225 Difference]: With dead ends: 9660 [2022-11-02 20:16:30,876 INFO L226 Difference]: Without dead ends: 4909 [2022-11-02 20:16:30,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:30,908 INFO L413 NwaCegarLoop]: 3795 mSDtfsCounter, 8924 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 3739 mSolverCounterSat, 5147 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9460 SdHoareTripleChecker+Valid, 5197 SdHoareTripleChecker+Invalid, 8889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5147 IncrementalHoareTripleChecker+Valid, 3739 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:30,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9460 Valid, 5197 Invalid, 8889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5147 Valid, 3739 Invalid, 3 Unknown, 0 Unchecked, 27.5s Time] [2022-11-02 20:16:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2022-11-02 20:16:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4750. [2022-11-02 20:16:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4750 states, 3244 states have (on average 1.3440197287299631) internal successors, (4360), 3310 states have internal predecessors, (4360), 1316 states have call successors, (1316), 179 states have call predecessors, (1316), 189 states have return successors, (1325), 1292 states have call predecessors, (1325), 1290 states have call successors, (1325) [2022-11-02 20:16:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 7001 transitions. [2022-11-02 20:16:31,356 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 7001 transitions. Word has length 60 [2022-11-02 20:16:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:31,357 INFO L495 AbstractCegarLoop]: Abstraction has 4750 states and 7001 transitions. [2022-11-02 20:16:31,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:16:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 7001 transitions. [2022-11-02 20:16:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-02 20:16:31,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:31,375 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:31,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:16:31,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash -736614488, now seen corresponding path program 1 times [2022-11-02 20:16:31,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:31,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463201785] [2022-11-02 20:16:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:31,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:16:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:16:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:16:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 20:16:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:16:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 20:16:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-02 20:16:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:16:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:16:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-02 20:16:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 20:16:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-02 20:16:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-02 20:16:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:16:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:16:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463201785] [2022-11-02 20:16:32,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463201785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:32,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:32,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:16:32,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103910500] [2022-11-02 20:16:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:32,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:16:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:16:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:16:32,782 INFO L87 Difference]: Start difference. First operand 4750 states and 7001 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:16:36,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:48,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:50,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:52,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:53,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:55,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:16:57,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []