./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/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 32bit --witnessprinter.graph.data.programhash 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- 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 20:57:51,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:57:51,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:57:51,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:57:51,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:57:51,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:57:51,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:57:51,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:57:51,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:57:51,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:57:51,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:57:51,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:57:51,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:57:51,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:57:51,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:57:51,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:57:51,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:57:51,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:57:51,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:57:51,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:57:51,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:57:51,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:57:51,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:57:51,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:57:51,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:57:51,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:57:51,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:57:51,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:57:51,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:57:51,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:57:51,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:57:51,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:57:51,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:57:51,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:57:51,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:57:51,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:57:51,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:57:51,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:57:51,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:57:51,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:57:51,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:57:51,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:57:51,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:57:51,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:57:51,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:57:51,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:57:51,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:57:51,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:57:51,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:57:51,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:57:51,732 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:57:51,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:57:51,734 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:57:51,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:57:51,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:57:51,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:57:51,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:57:51,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:57:51,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:57:51,736 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:57:51,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:57:51,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:57:51,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:57:51,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:57:51,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:57:51,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:57:51,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:51,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:57:51,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:57:51,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:57:51,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:57:51,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:57:51,742 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:57:51,742 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:57:51,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:57:51,743 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2022-11-02 20:57:52,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:57:52,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:57:52,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:57:52,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:57:52,130 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:57:52,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2022-11-02 20:57:52,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/data/76310d674/65bb6badb7c04e3ebcb7c8be7bf5d9fd/FLAG51c8658f8 [2022-11-02 20:57:53,070 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:57:53,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2022-11-02 20:57:53,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/data/76310d674/65bb6badb7c04e3ebcb7c8be7bf5d9fd/FLAG51c8658f8 [2022-11-02 20:57:53,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/data/76310d674/65bb6badb7c04e3ebcb7c8be7bf5d9fd [2022-11-02 20:57:53,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:57:53,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:57:53,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:53,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:57:53,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:57:53,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:53" (1/1) ... [2022-11-02 20:57:53,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b5878d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:53, skipping insertion in model container [2022-11-02 20:57:53,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:53" (1/1) ... [2022-11-02 20:57:53,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:57:53,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:57:54,074 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2022-11-02 20:57:54,092 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2022-11-02 20:57:54,250 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2022-11-02 20:57:54,251 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2022-11-02 20:57:54,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:54,270 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:57:54,305 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2022-11-02 20:57:54,308 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2022-11-02 20:57:54,390 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2022-11-02 20:57:54,391 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_21f7b2fc-cb81-47d9-b523-1608e90f0b26/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2022-11-02 20:57:54,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:54,469 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:57:54,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54 WrapperNode [2022-11-02 20:57:54,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:54,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:54,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:57:54,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:57:54,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,638 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1040 [2022-11-02 20:57:54,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:54,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:57:54,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:57:54,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:57:54,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,757 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:57:54,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:57:54,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:57:54,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:57:54,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (1/1) ... [2022-11-02 20:57:54,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:54,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:54,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:54,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:57:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:57:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:57:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:57:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:57:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-02 20:57:54,869 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-02 20:57:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:57:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:57:54,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:57:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:57:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:57:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:57:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-02 20:57:54,871 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-02 20:57:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:57:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-02 20:57:54,872 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-02 20:57:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:57:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:57:54,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:57:55,246 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:57:55,248 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:57:57,282 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:57:57,299 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:57:57,300 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-02 20:57:57,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:57 BoogieIcfgContainer [2022-11-02 20:57:57,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:57:57,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:57:57,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:57:57,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:57:57,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:57:53" (1/3) ... [2022-11-02 20:57:57,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dafdb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:57, skipping insertion in model container [2022-11-02 20:57:57,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:54" (2/3) ... [2022-11-02 20:57:57,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dafdb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:57, skipping insertion in model container [2022-11-02 20:57:57,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:57" (3/3) ... [2022-11-02 20:57:57,326 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2022-11-02 20:57:57,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:57:57,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:57:57,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:57,479 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;@7f7feb58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:57,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:57:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 203 states have (on average 1.6354679802955665) internal successors, (332), 207 states have internal predecessors, (332), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:57:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:57:57,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:57,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:57,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:57:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -720802776, now seen corresponding path program 1 times [2022-11-02 20:57:57,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:57,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539235189] [2022-11-02 20:57:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:57,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:57,788 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 20:57:57,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:57,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539235189] [2022-11-02 20:57:57,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539235189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:57,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:57,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514794916] [2022-11-02 20:57:57,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:57:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:57:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:57:57,844 INFO L87 Difference]: Start difference. First operand has 225 states, 203 states have (on average 1.6354679802955665) internal successors, (332), 207 states have internal predecessors, (332), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:57,906 INFO L93 Difference]: Finished difference Result 445 states and 724 transitions. [2022-11-02 20:57:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:57:57,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:57:57,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:57,921 INFO L225 Difference]: With dead ends: 445 [2022-11-02 20:57:57,921 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 20:57:57,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:57:57,931 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:57,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:57:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 20:57:57,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-02 20:57:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 197 states have (on average 1.299492385786802) internal successors, (256), 202 states have internal predecessors, (256), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:57:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 281 transitions. [2022-11-02 20:57:58,000 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 281 transitions. Word has length 8 [2022-11-02 20:57:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:58,001 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 281 transitions. [2022-11-02 20:57:58,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 281 transitions. [2022-11-02 20:57:58,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:57:58,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:58,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:58,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:57:58,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:57:58,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1810590275, now seen corresponding path program 1 times [2022-11-02 20:57:58,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:58,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869200173] [2022-11-02 20:57:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:58,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:58,188 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 20:57:58,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:58,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869200173] [2022-11-02 20:57:58,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869200173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:58,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:58,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:57:58,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113520880] [2022-11-02 20:57:58,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:57:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:58,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:57:58,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:57:58,193 INFO L87 Difference]: Start difference. First operand 218 states and 281 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:58,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:58,781 INFO L93 Difference]: Finished difference Result 455 states and 590 transitions. [2022-11-02 20:57:58,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:57:58,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:57:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:58,784 INFO L225 Difference]: With dead ends: 455 [2022-11-02 20:57:58,784 INFO L226 Difference]: Without dead ends: 346 [2022-11-02 20:57:58,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:57:58,786 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 152 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:58,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 711 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:57:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-02 20:57:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 220. [2022-11-02 20:57:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 199 states have (on average 1.2964824120603016) internal successors, (258), 204 states have internal predecessors, (258), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:57:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 283 transitions. [2022-11-02 20:57:58,808 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 283 transitions. Word has length 10 [2022-11-02 20:57:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:58,808 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 283 transitions. [2022-11-02 20:57:58,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 283 transitions. [2022-11-02 20:57:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:57:58,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:58,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:58,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:57:58,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:57:58,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1082818915, now seen corresponding path program 1 times [2022-11-02 20:57:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:58,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882764930] [2022-11-02 20:57:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:58,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:58,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585010764] [2022-11-02 20:57:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:58,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:58,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:58,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:58,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:57:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:59,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:57:59,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:59,206 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 20:57:59,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:57:59,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882764930] [2022-11-02 20:57:59,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:57:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585010764] [2022-11-02 20:57:59,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585010764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:59,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:59,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:57:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964826203] [2022-11-02 20:57:59,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:59,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:57:59,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:59,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:59,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:59,221 INFO L87 Difference]: Start difference. First operand 220 states and 283 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:59,333 INFO L93 Difference]: Finished difference Result 457 states and 593 transitions. [2022-11-02 20:57:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:59,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-02 20:57:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:59,336 INFO L225 Difference]: With dead ends: 457 [2022-11-02 20:57:59,336 INFO L226 Difference]: Without dead ends: 241 [2022-11-02 20:57:59,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:59,343 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:59,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 507 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:57:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-02 20:57:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2022-11-02 20:57:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 219 states have (on average 1.269406392694064) internal successors, (278), 224 states have internal predecessors, (278), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:57:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 303 transitions. [2022-11-02 20:57:59,384 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 303 transitions. Word has length 47 [2022-11-02 20:57:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:59,385 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 303 transitions. [2022-11-02 20:57:59,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 303 transitions. [2022-11-02 20:57:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:57:59,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:59,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:59,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:59,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:59,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:57:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:59,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1223367525, now seen corresponding path program 1 times [2022-11-02 20:57:59,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:59,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173707428] [2022-11-02 20:57:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:59,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:59,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:57:59,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206896135] [2022-11-02 20:57:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:59,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:59,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:59,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:59,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:57:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:59,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:57:59,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:00,019 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 20:58:00,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173707428] [2022-11-02 20:58:00,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206896135] [2022-11-02 20:58:00,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206896135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:00,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:00,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:58:00,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862518486] [2022-11-02 20:58:00,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:00,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:58:00,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:00,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:58:00,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:58:00,024 INFO L87 Difference]: Start difference. First operand 240 states and 303 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:00,151 INFO L93 Difference]: Finished difference Result 469 states and 595 transitions. [2022-11-02 20:58:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:58:00,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-02 20:58:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:00,153 INFO L225 Difference]: With dead ends: 469 [2022-11-02 20:58:00,153 INFO L226 Difference]: Without dead ends: 233 [2022-11-02 20:58:00,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:58:00,158 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 223 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:00,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 556 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:58:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-02 20:58:00,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 226. [2022-11-02 20:58:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 205 states have (on average 1.2536585365853659) internal successors, (257), 210 states have internal predecessors, (257), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:58:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 282 transitions. [2022-11-02 20:58:00,193 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 282 transitions. Word has length 47 [2022-11-02 20:58:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:00,197 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 282 transitions. [2022-11-02 20:58:00,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 282 transitions. [2022-11-02 20:58:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:58:00,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:00,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:00,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:00,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:00,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash 206381993, now seen corresponding path program 1 times [2022-11-02 20:58:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:00,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664557647] [2022-11-02 20:58:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:00,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:00,466 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:00,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622642931] [2022-11-02 20:58:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:00,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:00,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:00,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:00,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:58:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:01,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:58:01,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:01,564 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 20:58:01,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:01,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:01,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664557647] [2022-11-02 20:58:01,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:01,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622642931] [2022-11-02 20:58:01,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622642931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:01,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:01,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:58:01,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653835682] [2022-11-02 20:58:01,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:01,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:58:01,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:01,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:58:01,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:58:01,568 INFO L87 Difference]: Start difference. First operand 226 states and 282 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:01,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:01,634 INFO L93 Difference]: Finished difference Result 238 states and 294 transitions. [2022-11-02 20:58:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:58:01,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-02 20:58:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:01,636 INFO L225 Difference]: With dead ends: 238 [2022-11-02 20:58:01,637 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 20:58:01,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:58:01,638 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 13 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:01,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1336 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:58:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 20:58:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-02 20:58:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 212 states have (on average 1.25) internal successors, (265), 218 states have internal predecessors, (265), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:58:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 292 transitions. [2022-11-02 20:58:01,648 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 292 transitions. Word has length 47 [2022-11-02 20:58:01,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:01,649 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 292 transitions. [2022-11-02 20:58:01,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 292 transitions. [2022-11-02 20:58:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:58:01,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:01,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:01,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:01,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:01,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:01,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash -806940807, now seen corresponding path program 1 times [2022-11-02 20:58:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:01,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426217031] [2022-11-02 20:58:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:01,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:02,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:02,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212379379] [2022-11-02 20:58:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:02,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:02,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:02,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:58:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:02,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:58:02,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:02,856 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 20:58:02,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:02,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:02,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426217031] [2022-11-02 20:58:02,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:02,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212379379] [2022-11-02 20:58:02,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212379379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:02,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:02,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:58:02,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590374283] [2022-11-02 20:58:02,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:02,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:58:02,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:58:02,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:02,859 INFO L87 Difference]: Start difference. First operand 236 states and 292 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:02,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:02,881 INFO L93 Difference]: Finished difference Result 469 states and 582 transitions. [2022-11-02 20:58:02,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:58:02,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 20:58:02,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:02,884 INFO L225 Difference]: With dead ends: 469 [2022-11-02 20:58:02,884 INFO L226 Difference]: Without dead ends: 237 [2022-11-02 20:58:02,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:02,885 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:02,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 541 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:58:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-02 20:58:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-02 20:58:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 213 states have (on average 1.2488262910798122) internal successors, (266), 219 states have internal predecessors, (266), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:58:02,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 293 transitions. [2022-11-02 20:58:02,896 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 293 transitions. Word has length 58 [2022-11-02 20:58:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:02,896 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 293 transitions. [2022-11-02 20:58:02,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 293 transitions. [2022-11-02 20:58:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:58:02,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:02,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:02,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:03,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:03,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:03,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:03,126 INFO L85 PathProgramCache]: Analyzing trace with hash -413913797, now seen corresponding path program 1 times [2022-11-02 20:58:03,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:03,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523189723] [2022-11-02 20:58:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:03,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:03,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:03,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69343938] [2022-11-02 20:58:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:03,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:03,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:03,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:58:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:04,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:58:04,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:04,382 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 20:58:04,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:04,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:04,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523189723] [2022-11-02 20:58:04,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:04,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69343938] [2022-11-02 20:58:04,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69343938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:04,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:04,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:58:04,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364786928] [2022-11-02 20:58:04,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:04,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:58:04,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:58:04,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:04,387 INFO L87 Difference]: Start difference. First operand 237 states and 293 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:04,509 INFO L93 Difference]: Finished difference Result 592 states and 736 transitions. [2022-11-02 20:58:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:58:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 20:58:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:04,511 INFO L225 Difference]: With dead ends: 592 [2022-11-02 20:58:04,512 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 20:58:04,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:04,513 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 106 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:04,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 562 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:58:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 20:58:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 345. [2022-11-02 20:58:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 321 states have (on average 1.249221183800623) internal successors, (401), 327 states have internal predecessors, (401), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:58:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 428 transitions. [2022-11-02 20:58:04,528 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 428 transitions. Word has length 58 [2022-11-02 20:58:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:04,528 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 428 transitions. [2022-11-02 20:58:04,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 428 transitions. [2022-11-02 20:58:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:58:04,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:04,529 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:04,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:04,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:58:04,746 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1298801861, now seen corresponding path program 1 times [2022-11-02 20:58:04,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:04,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243125575] [2022-11-02 20:58:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:04,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:04,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:04,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35614350] [2022-11-02 20:58:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:04,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:04,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:04,809 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:04,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:58:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:05,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:58:05,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:05,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:05,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243125575] [2022-11-02 20:58:05,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:05,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35614350] [2022-11-02 20:58:05,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35614350] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:05,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:58:05,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-11-02 20:58:05,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169847786] [2022-11-02 20:58:05,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:05,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:58:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:05,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:58:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:58:05,741 INFO L87 Difference]: Start difference. First operand 345 states and 428 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:58:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:05,942 INFO L93 Difference]: Finished difference Result 1228 states and 1566 transitions. [2022-11-02 20:58:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:58:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-11-02 20:58:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:05,949 INFO L225 Difference]: With dead ends: 1228 [2022-11-02 20:58:05,949 INFO L226 Difference]: Without dead ends: 932 [2022-11-02 20:58:05,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:58:05,951 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 858 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:05,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1201 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:58:05,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-11-02 20:58:05,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 573. [2022-11-02 20:58:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 544 states have (on average 1.2610294117647058) internal successors, (686), 550 states have internal predecessors, (686), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:58:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 718 transitions. [2022-11-02 20:58:05,982 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 718 transitions. Word has length 62 [2022-11-02 20:58:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:05,983 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 718 transitions. [2022-11-02 20:58:05,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:58:05,983 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 718 transitions. [2022-11-02 20:58:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:58:05,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:05,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:06,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:06,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:58:06,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1545086991, now seen corresponding path program 1 times [2022-11-02 20:58:06,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:06,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589784691] [2022-11-02 20:58:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:06,284 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:06,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709035750] [2022-11-02 20:58:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:06,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:06,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:06,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:06,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:58:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:06,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:58:06,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:58:07,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:07,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:07,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589784691] [2022-11-02 20:58:07,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709035750] [2022-11-02 20:58:07,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709035750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:07,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:07,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:58:07,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388990067] [2022-11-02 20:58:07,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:07,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:58:07,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:07,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:58:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:58:07,026 INFO L87 Difference]: Start difference. First operand 573 states and 718 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:58:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:07,162 INFO L93 Difference]: Finished difference Result 1078 states and 1360 transitions. [2022-11-02 20:58:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:58:07,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-11-02 20:58:07,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:07,166 INFO L225 Difference]: With dead ends: 1078 [2022-11-02 20:58:07,167 INFO L226 Difference]: Without dead ends: 573 [2022-11-02 20:58:07,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:58:07,169 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 25 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:07,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 991 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:58:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-02 20:58:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2022-11-02 20:58:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 544 states have (on average 1.2610294117647058) internal successors, (686), 550 states have internal predecessors, (686), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:58:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 717 transitions. [2022-11-02 20:58:07,197 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 717 transitions. Word has length 93 [2022-11-02 20:58:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:07,198 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 717 transitions. [2022-11-02 20:58:07,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:58:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 717 transitions. [2022-11-02 20:58:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:58:07,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:07,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:07,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:07,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:07,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:07,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash -441690957, now seen corresponding path program 1 times [2022-11-02 20:58:07,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:07,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594558876] [2022-11-02 20:58:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:07,492 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:07,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109242435] [2022-11-02 20:58:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:07,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:07,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:07,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:07,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:58:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:08,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:58:08,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:08,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:58:08,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:58:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:58:08,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:08,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:08,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594558876] [2022-11-02 20:58:08,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:08,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109242435] [2022-11-02 20:58:08,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109242435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:08,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:08,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:58:08,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419111331] [2022-11-02 20:58:08,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:08,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:58:08,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:08,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:58:08,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:58:08,236 INFO L87 Difference]: Start difference. First operand 573 states and 717 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:58:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:08,680 INFO L93 Difference]: Finished difference Result 779 states and 994 transitions. [2022-11-02 20:58:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:58:08,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-11-02 20:58:08,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:08,689 INFO L225 Difference]: With dead ends: 779 [2022-11-02 20:58:08,689 INFO L226 Difference]: Without dead ends: 766 [2022-11-02 20:58:08,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:58:08,691 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 107 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:08,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 720 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:58:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-02 20:58:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 577. [2022-11-02 20:58:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 548 states have (on average 1.2591240875912408) internal successors, (690), 554 states have internal predecessors, (690), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:58:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 721 transitions. [2022-11-02 20:58:08,729 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 721 transitions. Word has length 98 [2022-11-02 20:58:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:08,729 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 721 transitions. [2022-11-02 20:58:08,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:58:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 721 transitions. [2022-11-02 20:58:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:58:08,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:08,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:58:08,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:08,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:08,954 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:08,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:08,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1451857612, now seen corresponding path program 1 times [2022-11-02 20:58:08,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:08,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021043398] [2022-11-02 20:58:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:09,024 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:09,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617866992] [2022-11-02 20:58:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:09,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:09,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:09,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:09,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:58:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:10,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:58:10,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:58:10,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:58:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:10,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021043398] [2022-11-02 20:58:10,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:10,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617866992] [2022-11-02 20:58:10,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617866992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:10,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:10,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:58:10,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018086694] [2022-11-02 20:58:10,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:10,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:58:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:58:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:58:10,210 INFO L87 Difference]: Start difference. First operand 577 states and 721 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:58:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:10,433 INFO L93 Difference]: Finished difference Result 1094 states and 1379 transitions. [2022-11-02 20:58:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:58:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 110 [2022-11-02 20:58:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:10,442 INFO L225 Difference]: With dead ends: 1094 [2022-11-02 20:58:10,442 INFO L226 Difference]: Without dead ends: 582 [2022-11-02 20:58:10,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:58:10,444 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 18 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:10,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1788 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:58:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-02 20:58:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2022-11-02 20:58:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 552 states have (on average 1.2590579710144927) internal successors, (695), 559 states have internal predecessors, (695), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:58:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 727 transitions. [2022-11-02 20:58:10,493 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 727 transitions. Word has length 110 [2022-11-02 20:58:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:10,493 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 727 transitions. [2022-11-02 20:58:10,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:58:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 727 transitions. [2022-11-02 20:58:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:58:10,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:10,497 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:58:10,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:10,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1710945854, now seen corresponding path program 1 times [2022-11-02 20:58:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:10,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252748047] [2022-11-02 20:58:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:10,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:10,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416186740] [2022-11-02 20:58:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:10,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:10,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:10,834 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:10,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:58:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:11,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:58:11,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:58:12,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:58:12,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:12,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252748047] [2022-11-02 20:58:12,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:12,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416186740] [2022-11-02 20:58:12,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416186740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:12,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:12,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-11-02 20:58:12,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117579847] [2022-11-02 20:58:12,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:12,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:58:12,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:58:12,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:12,345 INFO L87 Difference]: Start difference. First operand 582 states and 727 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:58:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:12,761 INFO L93 Difference]: Finished difference Result 1117 states and 1411 transitions. [2022-11-02 20:58:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:58:12,763 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2022-11-02 20:58:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:12,766 INFO L225 Difference]: With dead ends: 1117 [2022-11-02 20:58:12,766 INFO L226 Difference]: Without dead ends: 598 [2022-11-02 20:58:12,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:58:12,768 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 32 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:12,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2303 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:58:12,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-02 20:58:12,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 595. [2022-11-02 20:58:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 564 states have (on average 1.2641843971631206) internal successors, (713), 571 states have internal predecessors, (713), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:58:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 745 transitions. [2022-11-02 20:58:12,800 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 745 transitions. Word has length 112 [2022-11-02 20:58:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:12,800 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 745 transitions. [2022-11-02 20:58:12,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:58:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 745 transitions. [2022-11-02 20:58:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 20:58:12,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:12,803 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:58:12,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:13,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:13,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:13,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2135958996, now seen corresponding path program 2 times [2022-11-02 20:58:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:13,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89805912] [2022-11-02 20:58:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:13,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:13,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689216045] [2022-11-02 20:58:13,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:58:13,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:13,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:13,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:13,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:58:42,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:58:42,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:42,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:58:42,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:58:42,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:58:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:42,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89805912] [2022-11-02 20:58:42,709 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:58:42,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689216045] [2022-11-02 20:58:42,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689216045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:42,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:42,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-11-02 20:58:42,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047425258] [2022-11-02 20:58:42,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:42,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:58:42,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:42,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:58:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:58:42,713 INFO L87 Difference]: Start difference. First operand 595 states and 745 transitions. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:58:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:44,514 INFO L93 Difference]: Finished difference Result 1210 states and 1528 transitions. [2022-11-02 20:58:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:58:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-11-02 20:58:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:44,517 INFO L225 Difference]: With dead ends: 1210 [2022-11-02 20:58:44,517 INFO L226 Difference]: Without dead ends: 613 [2022-11-02 20:58:44,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:58:44,519 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 288 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:44,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 3080 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:58:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-02 20:58:44,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 601. [2022-11-02 20:58:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 570 states have (on average 1.2614035087719297) internal successors, (719), 577 states have internal predecessors, (719), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:58:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 751 transitions. [2022-11-02 20:58:44,549 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 751 transitions. Word has length 116 [2022-11-02 20:58:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:44,550 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 751 transitions. [2022-11-02 20:58:44,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:58:44,550 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 751 transitions. [2022-11-02 20:58:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-02 20:58:44,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:44,552 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:58:44,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:44,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:58:44,771 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:58:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash -224218713, now seen corresponding path program 3 times [2022-11-02 20:58:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:44,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583524028] [2022-11-02 20:58:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:44,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:44,851 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:58:44,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348642180] [2022-11-02 20:58:44,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:58:44,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:44,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:44,852 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:44,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f7b2fc-cb81-47d9-b523-1608e90f0b26/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process