./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:44:53,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:44:53,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:44:53,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:44:53,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:44:53,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:44:53,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:44:53,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:44:53,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:44:53,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:44:53,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:44:53,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:44:53,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:44:53,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:44:53,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:44:53,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:44:53,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:44:53,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:44:53,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:44:53,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:44:53,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:44:53,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:44:53,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:44:53,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:44:53,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:44:53,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:44:53,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:44:53,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:44:53,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:44:53,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:44:53,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:44:53,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:44:53,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:44:53,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:44:53,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:44:53,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:44:53,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:44:53,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:44:53,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:44:53,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:44:53,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:44:53,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 16:44:53,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:44:53,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:44:53,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:44:53,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:44:53,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:44:53,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:44:53,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:44:53,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:44:53,866 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:44:53,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:44:53,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:44:53,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:44:53,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:44:53,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:44:53,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:44:53,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:44:53,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:44:53,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:44:53,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:44:53,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:44:53,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:44:53,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:44:53,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:44:53,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:44:53,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:44:53,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:44:53,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:44:53,871 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:44:53,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:44:53,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:44:53,872 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_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2022-11-21 16:44:54,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:44:54,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:44:54,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:44:54,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:44:54,156 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:44:54,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-11-21 16:44:57,415 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:44:58,054 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:44:58,054 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-11-21 16:44:58,115 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/data/938f3b520/ec1194ba4b904c70b60ad907b9101ad0/FLAGe2a1aefc9 [2022-11-21 16:44:58,134 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/data/938f3b520/ec1194ba4b904c70b60ad907b9101ad0 [2022-11-21 16:44:58,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:44:58,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:44:58,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:44:58,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:44:58,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:44:58,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:44:58" (1/1) ... [2022-11-21 16:44:58,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168e7ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:44:58, skipping insertion in model container [2022-11-21 16:44:58,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:44:58" (1/1) ... [2022-11-21 16:44:58,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:44:58,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:45:00,077 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2022-11-21 16:45:00,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:45:00,188 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:45:00,651 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2022-11-21 16:45:00,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:45:00,747 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:45:00,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00 WrapperNode [2022-11-21 16:45:00,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:45:00,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:45:00,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:45:00,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:45:00,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:00,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,080 INFO L138 Inliner]: procedures = 177, calls = 1621, calls flagged for inlining = 87, calls inlined = 82, statements flattened = 3770 [2022-11-21 16:45:01,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:45:01,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:45:01,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:45:01,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:45:01,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:45:01,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:45:01,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:45:01,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:45:01,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (1/1) ... [2022-11-21 16:45:01,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:45:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:45:01,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:45:01,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:45:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-21 16:45:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-21 16:45:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-21 16:45:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-21 16:45:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-21 16:45:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-21 16:45:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2022-11-21 16:45:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2022-11-21 16:45:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 16:45:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-21 16:45:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-21 16:45:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-11-21 16:45:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-11-21 16:45:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 16:45:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 16:45:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-21 16:45:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-21 16:45:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:45:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2022-11-21 16:45:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2022-11-21 16:45:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-21 16:45:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-21 16:45:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-11-21 16:45:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-11-21 16:45:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-21 16:45:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-21 16:45:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-21 16:45:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-21 16:45:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 16:45:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 16:45:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-21 16:45:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-21 16:45:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-21 16:45:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-21 16:45:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-21 16:45:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-21 16:45:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2022-11-21 16:45:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2022-11-21 16:45:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-21 16:45:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-21 16:45:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2022-11-21 16:45:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2022-11-21 16:45:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:45:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-21 16:45:01,453 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-21 16:45:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2022-11-21 16:45:01,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2022-11-21 16:45:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-21 16:45:01,454 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-21 16:45:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-21 16:45:01,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-21 16:45:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2022-11-21 16:45:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2022-11-21 16:45:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit [2022-11-21 16:45:01,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit [2022-11-21 16:45:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2022-11-21 16:45:01,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2022-11-21 16:45:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-11-21 16:45:01,457 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-11-21 16:45:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:45:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-21 16:45:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-21 16:45:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init [2022-11-21 16:45:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init [2022-11-21 16:45:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:45:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:45:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:45:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-21 16:45:01,459 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-21 16:45:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-21 16:45:01,459 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-21 16:45:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-21 16:45:01,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-21 16:45:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:45:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-21 16:45:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-21 16:45:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-21 16:45:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-21 16:45:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-21 16:45:01,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-21 16:45:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:45:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 16:45:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2022-11-21 16:45:01,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2022-11-21 16:45:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-21 16:45:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-21 16:45:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-11-21 16:45:01,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-11-21 16:45:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-21 16:45:01,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-21 16:45:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-21 16:45:01,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-21 16:45:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-21 16:45:01,466 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-21 16:45:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-21 16:45:01,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-21 16:45:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2022-11-21 16:45:01,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2022-11-21 16:45:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-21 16:45:01,468 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-21 16:45:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 16:45:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 16:45:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2022-11-21 16:45:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2022-11-21 16:45:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-21 16:45:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-21 16:45:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-21 16:45:01,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-21 16:45:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2022-11-21 16:45:01,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2022-11-21 16:45:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-21 16:45:01,471 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-21 16:45:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:45:01,472 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-21 16:45:01,472 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-21 16:45:01,472 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2022-11-21 16:45:01,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2022-11-21 16:45:01,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-21 16:45:01,474 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-21 16:45:01,477 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2022-11-21 16:45:01,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2022-11-21 16:45:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 16:45:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:45:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:45:02,494 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:45:02,497 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:45:02,755 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-21 16:45:02,912 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-11-21 16:45:02,926 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-11-21 16:45:03,244 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-21 16:45:04,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##203: assume false; [2022-11-21 16:45:04,977 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##204: assume !false; [2022-11-21 16:45:05,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-21 16:45:05,417 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-21 16:45:05,420 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-21 16:45:08,112 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##78: assume !false; [2022-11-21 16:45:08,112 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume false; [2022-11-21 16:45:08,113 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-11-21 16:45:08,113 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-11-21 16:45:08,113 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res#1 := 0; [2022-11-21 16:45:08,744 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-21 16:45:09,910 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-11-21 16:45:09,911 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-11-21 16:45:09,992 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:45:10,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:45:10,018 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2022-11-21 16:45:10,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:45:10 BoogieIcfgContainer [2022-11-21 16:45:10,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:45:10,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:45:10,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:45:10,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:45:10,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:44:58" (1/3) ... [2022-11-21 16:45:10,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381c92a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:45:10, skipping insertion in model container [2022-11-21 16:45:10,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:00" (2/3) ... [2022-11-21 16:45:10,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381c92a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:45:10, skipping insertion in model container [2022-11-21 16:45:10,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:45:10" (3/3) ... [2022-11-21 16:45:10,039 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-11-21 16:45:10,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:45:10,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:45:10,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:45:10,172 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;@323ca99e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:45:10,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:45:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 1006 states, 752 states have (on average 1.4148936170212767) internal successors, (1064), 776 states have internal predecessors, (1064), 199 states have call successors, (199), 54 states have call predecessors, (199), 53 states have return successors, (197), 191 states have call predecessors, (197), 197 states have call successors, (197) [2022-11-21 16:45:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 16:45:10,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:10,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:10,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:45:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:10,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1639951202, now seen corresponding path program 1 times [2022-11-21 16:45:10,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:10,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362194635] [2022-11-21 16:45:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:10,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:45:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:11,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362194635] [2022-11-21 16:45:11,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362194635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:11,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:11,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:45:11,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506135227] [2022-11-21 16:45:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:11,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:45:11,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:45:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:11,199 INFO L87 Difference]: Start difference. First operand has 1006 states, 752 states have (on average 1.4148936170212767) internal successors, (1064), 776 states have internal predecessors, (1064), 199 states have call successors, (199), 54 states have call predecessors, (199), 53 states have return successors, (197), 191 states have call predecessors, (197), 197 states have call successors, (197) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:45:11,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:11,527 INFO L93 Difference]: Finished difference Result 2978 states and 4448 transitions. [2022-11-21 16:45:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:45:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-21 16:45:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:11,568 INFO L225 Difference]: With dead ends: 2978 [2022-11-21 16:45:11,569 INFO L226 Difference]: Without dead ends: 1970 [2022-11-21 16:45:11,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:11,592 INFO L413 NwaCegarLoop]: 1964 mSDtfsCounter, 1358 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:11,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 3322 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:45:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-11-21 16:45:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1966. [2022-11-21 16:45:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1473 states have (on average 1.3027834351663272) internal successors, (1919), 1501 states have internal predecessors, (1919), 389 states have call successors, (389), 104 states have call predecessors, (389), 103 states have return successors, (399), 373 states have call predecessors, (399), 385 states have call successors, (399) [2022-11-21 16:45:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2707 transitions. [2022-11-21 16:45:11,817 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2707 transitions. Word has length 16 [2022-11-21 16:45:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:11,818 INFO L495 AbstractCegarLoop]: Abstraction has 1966 states and 2707 transitions. [2022-11-21 16:45:11,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:45:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2707 transitions. [2022-11-21 16:45:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 16:45:11,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:11,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:45:11,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:45:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash -701499781, now seen corresponding path program 1 times [2022-11-21 16:45:11,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:11,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243951931] [2022-11-21 16:45:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:11,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:45:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:12,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:12,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243951931] [2022-11-21 16:45:12,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243951931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:12,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:12,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:45:12,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110949809] [2022-11-21 16:45:12,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:12,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:45:12,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:45:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:12,241 INFO L87 Difference]: Start difference. First operand 1966 states and 2707 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:45:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:12,543 INFO L93 Difference]: Finished difference Result 5871 states and 8162 transitions. [2022-11-21 16:45:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:45:12,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-21 16:45:12,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:12,577 INFO L225 Difference]: With dead ends: 5871 [2022-11-21 16:45:12,577 INFO L226 Difference]: Without dead ends: 3909 [2022-11-21 16:45:12,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:12,592 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 1345 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:12,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 3152 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:45:12,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3909 states. [2022-11-21 16:45:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3909 to 3902. [2022-11-21 16:45:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3902 states, 2925 states have (on average 1.3022222222222222) internal successors, (3809), 2976 states have internal predecessors, (3809), 772 states have call successors, (772), 205 states have call predecessors, (772), 204 states have return successors, (832), 744 states have call predecessors, (832), 768 states have call successors, (832) [2022-11-21 16:45:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 5413 transitions. [2022-11-21 16:45:12,844 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 5413 transitions. Word has length 17 [2022-11-21 16:45:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:12,845 INFO L495 AbstractCegarLoop]: Abstraction has 3902 states and 5413 transitions. [2022-11-21 16:45:12,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 16:45:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 5413 transitions. [2022-11-21 16:45:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-21 16:45:12,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:12,848 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, 1, 1] [2022-11-21 16:45:12,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:45:12,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:45:12,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash 120007349, now seen corresponding path program 1 times [2022-11-21 16:45:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:12,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356876299] [2022-11-21 16:45:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:12,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:45:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:13,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 16:45:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 16:45:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:13,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:13,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356876299] [2022-11-21 16:45:13,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356876299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:13,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:13,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:45:13,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401769444] [2022-11-21 16:45:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:13,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:45:13,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:13,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:45:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:45:13,947 INFO L87 Difference]: Start difference. First operand 3902 states and 5413 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 16:45:16,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:45:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:22,437 INFO L93 Difference]: Finished difference Result 8682 states and 12282 transitions. [2022-11-21 16:45:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:45:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2022-11-21 16:45:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:22,478 INFO L225 Difference]: With dead ends: 8682 [2022-11-21 16:45:22,478 INFO L226 Difference]: Without dead ends: 4788 [2022-11-21 16:45:22,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:45:22,507 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 543 mSDsluCounter, 3982 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 225 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 5219 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:22,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 5219 Invalid, 2019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [225 Valid, 1793 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-21 16:45:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2022-11-21 16:45:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4007. [2022-11-21 16:45:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3000 states have (on average 1.2983333333333333) internal successors, (3895), 3057 states have internal predecessors, (3895), 793 states have call successors, (793), 205 states have call predecessors, (793), 213 states have return successors, (892), 768 states have call predecessors, (892), 789 states have call successors, (892) [2022-11-21 16:45:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5580 transitions. [2022-11-21 16:45:22,769 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5580 transitions. Word has length 60 [2022-11-21 16:45:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:22,770 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 5580 transitions. [2022-11-21 16:45:22,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 16:45:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5580 transitions. [2022-11-21 16:45:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-21 16:45:22,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:22,773 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, 1, 1] [2022-11-21 16:45:22,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:45:22,773 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:45:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1805525962, now seen corresponding path program 1 times [2022-11-21 16:45:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:22,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949690514] [2022-11-21 16:45:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:45:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:23,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 16:45:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 16:45:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:23,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:23,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949690514] [2022-11-21 16:45:23,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949690514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:23,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:23,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:45:23,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385405567] [2022-11-21 16:45:23,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:23,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:45:23,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:23,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:45:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:23,259 INFO L87 Difference]: Start difference. First operand 4007 states and 5580 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 16:45:25,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:45:29,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:29,504 INFO L93 Difference]: Finished difference Result 8819 states and 12504 transitions. [2022-11-21 16:45:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:45:29,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2022-11-21 16:45:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:29,539 INFO L225 Difference]: With dead ends: 8819 [2022-11-21 16:45:29,539 INFO L226 Difference]: Without dead ends: 4823 [2022-11-21 16:45:29,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:29,573 INFO L413 NwaCegarLoop]: 1206 mSDtfsCounter, 553 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 236 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:29,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 2903 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 949 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 16:45:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4823 states. [2022-11-21 16:45:29,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4823 to 4042. [2022-11-21 16:45:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4042 states, 3035 states have (on average 1.2985172981878088) internal successors, (3941), 3092 states have internal predecessors, (3941), 793 states have call successors, (793), 205 states have call predecessors, (793), 213 states have return successors, (892), 768 states have call predecessors, (892), 789 states have call successors, (892) [2022-11-21 16:45:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4042 states to 4042 states and 5626 transitions. [2022-11-21 16:45:29,798 INFO L78 Accepts]: Start accepts. Automaton has 4042 states and 5626 transitions. Word has length 60 [2022-11-21 16:45:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:29,799 INFO L495 AbstractCegarLoop]: Abstraction has 4042 states and 5626 transitions. [2022-11-21 16:45:29,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 16:45:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4042 states and 5626 transitions. [2022-11-21 16:45:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-21 16:45:29,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:29,807 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:45:29,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:45:29,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:45:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash -322743963, now seen corresponding path program 1 times [2022-11-21 16:45:29,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:29,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703816294] [2022-11-21 16:45:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:29,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:45:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:45:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:45:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:45:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:45:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:45:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 16:45:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:45:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:30,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703816294] [2022-11-21 16:45:30,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703816294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:30,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:30,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:45:30,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489505118] [2022-11-21 16:45:30,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:30,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:45:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:30,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:45:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:45:30,858 INFO L87 Difference]: Start difference. First operand 4042 states and 5626 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 16:45:34,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:45:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:50,089 INFO L93 Difference]: Finished difference Result 14193 states and 21468 transitions. [2022-11-21 16:45:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:45:50,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 94 [2022-11-21 16:45:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:50,169 INFO L225 Difference]: With dead ends: 14193 [2022-11-21 16:45:50,170 INFO L226 Difference]: Without dead ends: 10163 [2022-11-21 16:45:50,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:45:50,206 INFO L413 NwaCegarLoop]: 1842 mSDtfsCounter, 2789 mSDsluCounter, 4479 mSDsCounter, 0 mSdLazyCounter, 5191 mSolverCounterSat, 1078 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 6321 SdHoareTripleChecker+Invalid, 6270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1078 IncrementalHoareTripleChecker+Valid, 5191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:50,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2999 Valid, 6321 Invalid, 6270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1078 Valid, 5191 Invalid, 1 Unknown, 0 Unchecked, 18.2s Time] [2022-11-21 16:45:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2022-11-21 16:45:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 8257. [2022-11-21 16:45:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 6174 states have (on average 1.2977000323939099) internal successors, (8012), 6371 states have internal predecessors, (8012), 1580 states have call successors, (1580), 393 states have call predecessors, (1580), 502 states have return successors, (2508), 1552 states have call predecessors, (2508), 1576 states have call successors, (2508) [2022-11-21 16:45:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 12100 transitions. [2022-11-21 16:45:51,034 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 12100 transitions. Word has length 94 [2022-11-21 16:45:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:51,034 INFO L495 AbstractCegarLoop]: Abstraction has 8257 states and 12100 transitions. [2022-11-21 16:45:51,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 16:45:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 12100 transitions. [2022-11-21 16:45:51,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-21 16:45:51,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:51,037 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:45:51,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:45:51,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:45:51,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:51,038 INFO L85 PathProgramCache]: Analyzing trace with hash 564478883, now seen corresponding path program 1 times [2022-11-21 16:45:51,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:51,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140652086] [2022-11-21 16:45:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:51,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:45:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:45:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:45:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:45:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:45:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:45:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 16:45:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:45:52,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:52,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140652086] [2022-11-21 16:45:52,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140652086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:52,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:52,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:45:52,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752590014] [2022-11-21 16:45:52,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:45:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:52,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:45:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:45:52,210 INFO L87 Difference]: Start difference. First operand 8257 states and 12100 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 16:45:55,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:46:06,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:06,574 INFO L93 Difference]: Finished difference Result 19017 states and 28778 transitions. [2022-11-21 16:46:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:46:06,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 94 [2022-11-21 16:46:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:06,669 INFO L225 Difference]: With dead ends: 19017 [2022-11-21 16:46:06,670 INFO L226 Difference]: Without dead ends: 10772 [2022-11-21 16:46:06,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:46:06,826 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 1402 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 533 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 4428 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:06,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 4428 Invalid, 3968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [533 Valid, 3434 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-11-21 16:46:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2022-11-21 16:46:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 8636. [2022-11-21 16:46:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 6446 states have (on average 1.2967731926776296) internal successors, (8359), 6653 states have internal predecessors, (8359), 1649 states have call successors, (1649), 419 states have call predecessors, (1649), 540 states have return successors, (2695), 1623 states have call predecessors, (2695), 1645 states have call successors, (2695) [2022-11-21 16:46:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 12703 transitions. [2022-11-21 16:46:07,505 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 12703 transitions. Word has length 94 [2022-11-21 16:46:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:07,506 INFO L495 AbstractCegarLoop]: Abstraction has 8636 states and 12703 transitions. [2022-11-21 16:46:07,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 16:46:07,508 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 12703 transitions. [2022-11-21 16:46:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 16:46:07,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:07,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:46:07,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:07,516 INFO L85 PathProgramCache]: Analyzing trace with hash -642045285, now seen corresponding path program 1 times [2022-11-21 16:46:07,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:07,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217607345] [2022-11-21 16:46:07,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:07,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:46:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:46:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:08,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:08,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:46:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:08,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 16:46:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:46:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:08,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217607345] [2022-11-21 16:46:08,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217607345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:08,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:08,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:46:08,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803721866] [2022-11-21 16:46:08,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:08,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:46:08,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:08,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:46:08,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:46:08,083 INFO L87 Difference]: Start difference. First operand 8636 states and 12703 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 16:46:10,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:46:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:15,863 INFO L93 Difference]: Finished difference Result 19307 states and 30000 transitions. [2022-11-21 16:46:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:46:15,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 103 [2022-11-21 16:46:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:15,933 INFO L225 Difference]: With dead ends: 19307 [2022-11-21 16:46:15,933 INFO L226 Difference]: Without dead ends: 10683 [2022-11-21 16:46:15,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:46:15,995 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 985 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 523 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:15,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 2861 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1351 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-21 16:46:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2022-11-21 16:46:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 8662. [2022-11-21 16:46:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8662 states, 6472 states have (on average 1.2955809641532756) internal successors, (8385), 6679 states have internal predecessors, (8385), 1649 states have call successors, (1649), 419 states have call predecessors, (1649), 540 states have return successors, (2695), 1623 states have call predecessors, (2695), 1645 states have call successors, (2695) [2022-11-21 16:46:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 12729 transitions. [2022-11-21 16:46:16,748 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 12729 transitions. Word has length 103 [2022-11-21 16:46:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:16,748 INFO L495 AbstractCegarLoop]: Abstraction has 8662 states and 12729 transitions. [2022-11-21 16:46:16,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 16:46:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 12729 transitions. [2022-11-21 16:46:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-21 16:46:16,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:16,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:16,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:46:16,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1280303477, now seen corresponding path program 1 times [2022-11-21 16:46:16,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:16,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630170922] [2022-11-21 16:46:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:16,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:46:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:46:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:46:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 16:46:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 16:46:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:46:17,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:17,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630170922] [2022-11-21 16:46:17,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630170922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:46:17,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190748239] [2022-11-21 16:46:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:17,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:17,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:46:17,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:46:17,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:46:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:18,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:46:18,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:46:18,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:18,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190748239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:18,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:46:18,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-21 16:46:18,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243601960] [2022-11-21 16:46:18,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:18,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:46:18,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:46:18,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:46:18,620 INFO L87 Difference]: Start difference. First operand 8662 states and 12729 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 16:46:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:19,254 INFO L93 Difference]: Finished difference Result 17059 states and 25039 transitions. [2022-11-21 16:46:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:46:19,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2022-11-21 16:46:19,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:19,311 INFO L225 Difference]: With dead ends: 17059 [2022-11-21 16:46:19,312 INFO L226 Difference]: Without dead ends: 8398 [2022-11-21 16:46:19,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:46:19,362 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 13 mSDsluCounter, 4079 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5446 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:19,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5446 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:46:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2022-11-21 16:46:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 8350. [2022-11-21 16:46:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 6226 states have (on average 1.2934468358496627) internal successors, (8053), 6426 states have internal predecessors, (8053), 1605 states have call successors, (1605), 398 states have call predecessors, (1605), 518 states have return successors, (2578), 1581 states have call predecessors, (2578), 1601 states have call successors, (2578) [2022-11-21 16:46:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 12236 transitions. [2022-11-21 16:46:20,052 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 12236 transitions. Word has length 111 [2022-11-21 16:46:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:20,053 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 12236 transitions. [2022-11-21 16:46:20,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 16:46:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 12236 transitions. [2022-11-21 16:46:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-21 16:46:20,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:20,055 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:20,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:46:20,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:20,267 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1299210224, now seen corresponding path program 1 times [2022-11-21 16:46:20,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:20,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706634750] [2022-11-21 16:46:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:20,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:21,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:46:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:46:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 16:46:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 16:46:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 16:46:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:46:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:46:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:46:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 16:46:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 16:46:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 16:46:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:46:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 16:46:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 16:46:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:22,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706634750] [2022-11-21 16:46:22,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706634750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:46:22,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669557173] [2022-11-21 16:46:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:22,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:22,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:46:22,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:46:22,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:46:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:24,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:46:24,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 16:46:24,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:24,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669557173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:24,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:46:24,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-21 16:46:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12761356] [2022-11-21 16:46:24,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:24,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:46:24,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:24,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:46:24,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:46:24,159 INFO L87 Difference]: Start difference. First operand 8350 states and 12236 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 16:46:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:24,718 INFO L93 Difference]: Finished difference Result 8402 states and 12288 transitions. [2022-11-21 16:46:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:46:24,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2022-11-21 16:46:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:24,765 INFO L225 Difference]: With dead ends: 8402 [2022-11-21 16:46:24,765 INFO L226 Difference]: Without dead ends: 8376 [2022-11-21 16:46:24,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:46:24,773 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 1353 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:24,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 4074 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:46:24,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2022-11-21 16:46:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 8350. [2022-11-21 16:46:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 6226 states have (on average 1.292964985544491) internal successors, (8050), 6426 states have internal predecessors, (8050), 1605 states have call successors, (1605), 398 states have call predecessors, (1605), 518 states have return successors, (2578), 1581 states have call predecessors, (2578), 1601 states have call successors, (2578) [2022-11-21 16:46:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 12233 transitions. [2022-11-21 16:46:25,500 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 12233 transitions. Word has length 124 [2022-11-21 16:46:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:25,502 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 12233 transitions. [2022-11-21 16:46:25,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 16:46:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 12233 transitions. [2022-11-21 16:46:25,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-21 16:46:25,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:25,505 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:25,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:46:25,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:25,718 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:25,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1226178994, now seen corresponding path program 1 times [2022-11-21 16:46:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:25,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096257757] [2022-11-21 16:46:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:25,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:46:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:46:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:46:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:46:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:46:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:46:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:46:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:46:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:46:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 16:46:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:46:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 16:46:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 16:46:27,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096257757] [2022-11-21 16:46:27,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096257757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:46:27,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896767102] [2022-11-21 16:46:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:27,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:27,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:46:27,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:46:27,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:46:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:29,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 16:46:29,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 16:46:29,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:29,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896767102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:29,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:46:29,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-21 16:46:29,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537594217] [2022-11-21 16:46:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:29,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:46:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:46:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:46:29,321 INFO L87 Difference]: Start difference. First operand 8350 states and 12233 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 16:46:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:29,858 INFO L93 Difference]: Finished difference Result 14535 states and 21644 transitions. [2022-11-21 16:46:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:46:29,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2022-11-21 16:46:29,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:29,897 INFO L225 Difference]: With dead ends: 14535 [2022-11-21 16:46:29,897 INFO L226 Difference]: Without dead ends: 6233 [2022-11-21 16:46:29,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:46:29,947 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 0 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5409 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:29,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:46:29,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2022-11-21 16:46:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 6219. [2022-11-21 16:46:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6219 states, 4637 states have (on average 1.2915678240241535) internal successors, (5989), 4785 states have internal predecessors, (5989), 1195 states have call successors, (1195), 300 states have call predecessors, (1195), 386 states have return successors, (1863), 1175 states have call predecessors, (1863), 1191 states have call successors, (1863) [2022-11-21 16:46:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 9047 transitions. [2022-11-21 16:46:30,645 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 9047 transitions. Word has length 130 [2022-11-21 16:46:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:30,645 INFO L495 AbstractCegarLoop]: Abstraction has 6219 states and 9047 transitions. [2022-11-21 16:46:30,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 16:46:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 9047 transitions. [2022-11-21 16:46:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-21 16:46:30,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:30,650 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:30,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:46:30,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 16:46:30,863 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1579318503, now seen corresponding path program 1 times [2022-11-21 16:46:30,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:30,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234184404] [2022-11-21 16:46:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:30,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:46:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:46:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:32,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 16:46:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 16:46:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 16:46:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:46:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:46:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:46:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 16:46:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 16:46:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 16:46:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:46:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 16:46:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 16:46:33,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234184404] [2022-11-21 16:46:33,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234184404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:46:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546661306] [2022-11-21 16:46:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:33,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:33,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:46:33,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:46:33,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:46:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:34,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:46:34,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 16:46:34,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:34,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546661306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:34,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:46:34,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-21 16:46:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914271531] [2022-11-21 16:46:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:34,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:46:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:46:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:46:34,619 INFO L87 Difference]: Start difference. First operand 6219 states and 9047 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 16:46:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:35,053 INFO L93 Difference]: Finished difference Result 12390 states and 18040 transitions. [2022-11-21 16:46:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:46:35,054 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), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 128 [2022-11-21 16:46:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:35,090 INFO L225 Difference]: With dead ends: 12390 [2022-11-21 16:46:35,090 INFO L226 Difference]: Without dead ends: 6219 [2022-11-21 16:46:35,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:46:35,120 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 22 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:35,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4027 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:46:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2022-11-21 16:46:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 6219. [2022-11-21 16:46:35,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6219 states, 4637 states have (on average 1.290489540651283) internal successors, (5984), 4785 states have internal predecessors, (5984), 1195 states have call successors, (1195), 300 states have call predecessors, (1195), 386 states have return successors, (1863), 1175 states have call predecessors, (1863), 1191 states have call successors, (1863) [2022-11-21 16:46:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 9042 transitions. [2022-11-21 16:46:35,577 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 9042 transitions. Word has length 128 [2022-11-21 16:46:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:35,578 INFO L495 AbstractCegarLoop]: Abstraction has 6219 states and 9042 transitions. [2022-11-21 16:46:35,578 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), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 16:46:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 9042 transitions. [2022-11-21 16:46:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-21 16:46:35,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:35,582 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:35,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:46:35,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 16:46:35,796 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:35,796 INFO L85 PathProgramCache]: Analyzing trace with hash -264564977, now seen corresponding path program 1 times [2022-11-21 16:46:35,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:35,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666963708] [2022-11-21 16:46:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:46:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:46:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:46:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:46:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:46:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:46:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:46:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:46:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:46:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 16:46:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:46:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 16:46:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 16:46:37,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:37,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666963708] [2022-11-21 16:46:37,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666963708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:46:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103320479] [2022-11-21 16:46:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:37,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:37,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:46:37,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:46:37,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:46:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:38,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:46:38,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:46:39,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:46:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-21 16:46:39,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103320479] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:46:39,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:46:39,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 6] total 18 [2022-11-21 16:46:39,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33293191] [2022-11-21 16:46:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:39,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:46:39,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:46:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:46:39,836 INFO L87 Difference]: Start difference. First operand 6219 states and 9042 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-21 16:46:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:43,259 INFO L93 Difference]: Finished difference Result 10394 states and 15580 transitions. [2022-11-21 16:46:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:46:43,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 130 [2022-11-21 16:46:43,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:43,322 INFO L225 Difference]: With dead ends: 10394 [2022-11-21 16:46:43,322 INFO L226 Difference]: Without dead ends: 10389 [2022-11-21 16:46:43,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 283 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:46:43,333 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 4110 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:43,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4110 Valid, 2824 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 16:46:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10389 states. [2022-11-21 16:46:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10389 to 10363. [2022-11-21 16:46:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10363 states, 7721 states have (on average 1.2901178603807797) internal successors, (9961), 7967 states have internal predecessors, (9961), 1997 states have call successors, (1997), 494 states have call predecessors, (1997), 644 states have return successors, (3586), 1971 states have call predecessors, (3586), 1993 states have call successors, (3586) [2022-11-21 16:46:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10363 states to 10363 states and 15544 transitions. [2022-11-21 16:46:44,374 INFO L78 Accepts]: Start accepts. Automaton has 10363 states and 15544 transitions. Word has length 130 [2022-11-21 16:46:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:44,374 INFO L495 AbstractCegarLoop]: Abstraction has 10363 states and 15544 transitions. [2022-11-21 16:46:44,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-21 16:46:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 10363 states and 15544 transitions. [2022-11-21 16:46:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 16:46:44,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:44,381 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:44,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:46:44,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:44,600 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash 495827447, now seen corresponding path program 1 times [2022-11-21 16:46:44,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:44,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044039463] [2022-11-21 16:46:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:44,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:46:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:46:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:46:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:46:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:46:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:46:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:46:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:46:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:46:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:46:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 16:46:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:46:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 16:46:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:46,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044039463] [2022-11-21 16:46:46,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044039463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:46:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841743389] [2022-11-21 16:46:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:46,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:46,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:46:46,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:46:46,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:46:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:48,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:46:48,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:48,178 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:46:48,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:48,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841743389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:48,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:46:48,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-21 16:46:48,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224305528] [2022-11-21 16:46:48,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:48,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:46:48,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:48,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:46:48,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:46:48,181 INFO L87 Difference]: Start difference. First operand 10363 states and 15544 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:46:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:49,292 INFO L93 Difference]: Finished difference Result 25588 states and 40410 transitions. [2022-11-21 16:46:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:46:49,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-21 16:46:49,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:49,405 INFO L225 Difference]: With dead ends: 25588 [2022-11-21 16:46:49,405 INFO L226 Difference]: Without dead ends: 15273 [2022-11-21 16:46:49,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:46:49,502 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 909 mSDsluCounter, 4848 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 6841 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:49,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 6841 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:46:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15273 states. [2022-11-21 16:46:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15273 to 10403. [2022-11-21 16:46:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10403 states, 7751 states have (on average 1.2889949683911752) internal successors, (9991), 7997 states have internal predecessors, (9991), 2007 states have call successors, (2007), 494 states have call predecessors, (2007), 644 states have return successors, (3596), 1981 states have call predecessors, (3596), 2003 states have call successors, (3596) [2022-11-21 16:46:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10403 states to 10403 states and 15594 transitions. [2022-11-21 16:46:50,632 INFO L78 Accepts]: Start accepts. Automaton has 10403 states and 15594 transitions. Word has length 147 [2022-11-21 16:46:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:50,633 INFO L495 AbstractCegarLoop]: Abstraction has 10403 states and 15594 transitions. [2022-11-21 16:46:50,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:46:50,634 INFO L276 IsEmpty]: Start isEmpty. Operand 10403 states and 15594 transitions. [2022-11-21 16:46:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 16:46:50,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:50,637 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:50,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:46:50,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:50,852 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:50,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1870867147, now seen corresponding path program 1 times [2022-11-21 16:46:50,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:50,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699254260] [2022-11-21 16:46:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:50,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:46:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:46:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:46:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:46:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:46:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:46:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:46:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:46:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:46:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:46:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 16:46:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:46:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 16:46:52,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:52,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699254260] [2022-11-21 16:46:52,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699254260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:46:52,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098638001] [2022-11-21 16:46:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:52,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:46:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:46:52,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:46:52,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:46:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:53,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-21 16:46:53,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:46:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:46:54,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:46:54,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098638001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:54,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:46:54,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 12 [2022-11-21 16:46:54,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020357124] [2022-11-21 16:46:54,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:46:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:46:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:46:54,116 INFO L87 Difference]: Start difference. First operand 10403 states and 15594 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 16:46:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:46:54,892 INFO L93 Difference]: Finished difference Result 20736 states and 32045 transitions. [2022-11-21 16:46:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:46:54,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2022-11-21 16:46:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:46:54,950 INFO L225 Difference]: With dead ends: 20736 [2022-11-21 16:46:54,950 INFO L226 Difference]: Without dead ends: 10365 [2022-11-21 16:46:55,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:46:55,039 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 4 mSDsluCounter, 10784 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12137 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:46:55,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 12137 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:46:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10365 states. [2022-11-21 16:46:55,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10365 to 10344. [2022-11-21 16:46:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 7710 states have (on average 1.2858625162127109) internal successors, (9914), 7937 states have internal predecessors, (9914), 1987 states have call successors, (1987), 489 states have call predecessors, (1987), 646 states have return successors, (3586), 1987 states have call predecessors, (3586), 1983 states have call successors, (3586) [2022-11-21 16:46:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 15487 transitions. [2022-11-21 16:46:56,062 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 15487 transitions. Word has length 147 [2022-11-21 16:46:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:46:56,062 INFO L495 AbstractCegarLoop]: Abstraction has 10344 states and 15487 transitions. [2022-11-21 16:46:56,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 16:46:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 15487 transitions. [2022-11-21 16:46:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 16:46:56,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:46:56,067 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:46:56,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 16:46:56,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 16:46:56,280 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:46:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:46:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash -644621356, now seen corresponding path program 1 times [2022-11-21 16:46:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:46:56,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673504174] [2022-11-21 16:46:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:46:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:46:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:46:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:46:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:46:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:46:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:46:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:46:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:46:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:46:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:46:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:46:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:46:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:46:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 16:46:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:46:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:46:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:46:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 16:46:57,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:46:57,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673504174] [2022-11-21 16:46:57,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673504174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:46:57,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:46:57,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:46:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534376342] [2022-11-21 16:46:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:46:57,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:46:57,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:46:57,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:46:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:46:57,575 INFO L87 Difference]: Start difference. First operand 10344 states and 15487 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:47:04,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:47:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:07,031 INFO L93 Difference]: Finished difference Result 24068 states and 38569 transitions. [2022-11-21 16:47:07,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:47:07,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-21 16:47:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:07,106 INFO L225 Difference]: With dead ends: 24068 [2022-11-21 16:47:07,106 INFO L226 Difference]: Without dead ends: 13772 [2022-11-21 16:47:07,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:47:07,193 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 768 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 237 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 4051 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:07,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 4051 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1426 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-21 16:47:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13772 states. [2022-11-21 16:47:07,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13772 to 10616. [2022-11-21 16:47:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10616 states, 7886 states have (on average 1.2832868374334263) internal successors, (10120), 8121 states have internal predecessors, (10120), 2061 states have call successors, (2061), 489 states have call predecessors, (2061), 668 states have return successors, (3892), 2075 states have call predecessors, (3892), 2057 states have call successors, (3892) [2022-11-21 16:47:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10616 states to 10616 states and 16073 transitions. [2022-11-21 16:47:08,012 INFO L78 Accepts]: Start accepts. Automaton has 10616 states and 16073 transitions. Word has length 147 [2022-11-21 16:47:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:08,013 INFO L495 AbstractCegarLoop]: Abstraction has 10616 states and 16073 transitions. [2022-11-21 16:47:08,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:47:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10616 states and 16073 transitions. [2022-11-21 16:47:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 16:47:08,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:08,016 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:08,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:47:08,017 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash 846054232, now seen corresponding path program 1 times [2022-11-21 16:47:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:08,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498603208] [2022-11-21 16:47:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:47:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:47:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:47:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:47:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:47:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:47:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:47:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:47:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:47:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:47:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:47:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:47:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:47:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 16:47:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:47:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:47:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 16:47:09,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:09,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498603208] [2022-11-21 16:47:09,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498603208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:09,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:09,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:47:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103298808] [2022-11-21 16:47:09,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:09,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:47:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:47:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:47:09,694 INFO L87 Difference]: Start difference. First operand 10616 states and 16073 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:47:16,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:47:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:19,320 INFO L93 Difference]: Finished difference Result 24372 states and 39165 transitions. [2022-11-21 16:47:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:47:19,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-21 16:47:19,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:19,410 INFO L225 Difference]: With dead ends: 24372 [2022-11-21 16:47:19,410 INFO L226 Difference]: Without dead ends: 13804 [2022-11-21 16:47:19,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:19,507 INFO L413 NwaCegarLoop]: 1460 mSDtfsCounter, 1382 mSDsluCounter, 4229 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 632 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 5689 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:19,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 5689 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [632 Valid, 1998 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-21 16:47:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13804 states. [2022-11-21 16:47:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13804 to 10646. [2022-11-21 16:47:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10646 states, 7916 states have (on average 1.2822132390096008) internal successors, (10150), 8151 states have internal predecessors, (10150), 2061 states have call successors, (2061), 489 states have call predecessors, (2061), 668 states have return successors, (3892), 2075 states have call predecessors, (3892), 2057 states have call successors, (3892) [2022-11-21 16:47:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 16103 transitions. [2022-11-21 16:47:20,491 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 16103 transitions. Word has length 147 [2022-11-21 16:47:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:20,492 INFO L495 AbstractCegarLoop]: Abstraction has 10646 states and 16103 transitions. [2022-11-21 16:47:20,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:47:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 16103 transitions. [2022-11-21 16:47:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-21 16:47:20,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:20,497 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:20,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:47:20,498 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:20,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash -483021765, now seen corresponding path program 1 times [2022-11-21 16:47:20,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:20,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838594500] [2022-11-21 16:47:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:47:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:47:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:47:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:47:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:47:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:47:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:47:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:47:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:47:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:47:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:47:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:47:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:47:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 16:47:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:47:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:47:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 16:47:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:21,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838594500] [2022-11-21 16:47:21,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838594500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:21,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:21,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:47:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861768183] [2022-11-21 16:47:21,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:21,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:47:21,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:21,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:47:21,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:47:21,149 INFO L87 Difference]: Start difference. First operand 10646 states and 16103 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:47:27,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:47:31,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:31,082 INFO L93 Difference]: Finished difference Result 26772 states and 43264 transitions. [2022-11-21 16:47:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:47:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2022-11-21 16:47:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:31,165 INFO L225 Difference]: With dead ends: 26772 [2022-11-21 16:47:31,165 INFO L226 Difference]: Without dead ends: 16174 [2022-11-21 16:47:31,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:47:31,238 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 1740 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 701 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:31,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 6333 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 2108 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-21 16:47:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16174 states. [2022-11-21 16:47:32,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16174 to 10676. [2022-11-21 16:47:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10676 states, 7946 states have (on average 1.281147747294236) internal successors, (10180), 8181 states have internal predecessors, (10180), 2061 states have call successors, (2061), 489 states have call predecessors, (2061), 668 states have return successors, (3892), 2075 states have call predecessors, (3892), 2057 states have call successors, (3892) [2022-11-21 16:47:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 16133 transitions. [2022-11-21 16:47:32,321 INFO L78 Accepts]: Start accepts. Automaton has 10676 states and 16133 transitions. Word has length 158 [2022-11-21 16:47:32,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:32,322 INFO L495 AbstractCegarLoop]: Abstraction has 10676 states and 16133 transitions. [2022-11-21 16:47:32,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:47:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10676 states and 16133 transitions. [2022-11-21 16:47:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-21 16:47:32,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:32,327 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:32,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:47:32,327 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1950436359, now seen corresponding path program 1 times [2022-11-21 16:47:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:32,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893089320] [2022-11-21 16:47:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:32,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:47:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:47:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:47:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:47:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:47:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:47:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:47:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:47:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:47:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:47:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:47:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:47:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:47:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 16:47:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:47:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:47:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 16:47:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:32,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893089320] [2022-11-21 16:47:32,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893089320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:32,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:47:32,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:47:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355853658] [2022-11-21 16:47:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:32,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:47:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:47:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:47:32,879 INFO L87 Difference]: Start difference. First operand 10676 states and 16133 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:47:39,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:47:42,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:47:42,226 INFO L93 Difference]: Finished difference Result 24672 states and 39583 transitions. [2022-11-21 16:47:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:47:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2022-11-21 16:47:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:47:42,304 INFO L225 Difference]: With dead ends: 24672 [2022-11-21 16:47:42,304 INFO L226 Difference]: Without dead ends: 14044 [2022-11-21 16:47:42,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:47:42,366 INFO L413 NwaCegarLoop]: 1479 mSDtfsCounter, 742 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 240 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:47:42,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 4151 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1443 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-21 16:47:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14044 states. [2022-11-21 16:47:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14044 to 10686. [2022-11-21 16:47:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10686 states, 7956 states have (on average 1.280794369029663) internal successors, (10190), 8191 states have internal predecessors, (10190), 2061 states have call successors, (2061), 489 states have call predecessors, (2061), 668 states have return successors, (3892), 2075 states have call predecessors, (3892), 2057 states have call successors, (3892) [2022-11-21 16:47:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10686 states to 10686 states and 16143 transitions. [2022-11-21 16:47:43,332 INFO L78 Accepts]: Start accepts. Automaton has 10686 states and 16143 transitions. Word has length 159 [2022-11-21 16:47:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:47:43,333 INFO L495 AbstractCegarLoop]: Abstraction has 10686 states and 16143 transitions. [2022-11-21 16:47:43,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:47:43,333 INFO L276 IsEmpty]: Start isEmpty. Operand 10686 states and 16143 transitions. [2022-11-21 16:47:43,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-21 16:47:43,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:47:43,338 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:47:43,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:47:43,339 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:47:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:47:43,339 INFO L85 PathProgramCache]: Analyzing trace with hash -22163657, now seen corresponding path program 1 times [2022-11-21 16:47:43,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:47:43,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466395408] [2022-11-21 16:47:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:43,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:47:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:47:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:47:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:45,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:47:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:47:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:47:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:47:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:47:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:47:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:47:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:47:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:47:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:47:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:47:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 16:47:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:47:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:47:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 16:47:46,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:47:46,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466395408] [2022-11-21 16:47:46,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466395408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:47:46,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423497796] [2022-11-21 16:47:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:47:46,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:47:46,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:47:46,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:47:46,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:47:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:47:47,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 3259 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-21 16:47:47,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:47:48,356 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:47:48,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:47:48,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:47:48,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:47:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:47:48,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:47:48,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423497796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:47:48,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:47:48,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 28 [2022-11-21 16:47:48,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317877570] [2022-11-21 16:47:48,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:47:48,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 16:47:48,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:47:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 16:47:48,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-21 16:47:48,655 INFO L87 Difference]: Start difference. First operand 10686 states and 16143 transitions. Second operand has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-21 16:47:55,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:47:57,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:47:59,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:01,125 INFO L93 Difference]: Finished difference Result 21348 states and 32268 transitions. [2022-11-21 16:48:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:48:01,126 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 159 [2022-11-21 16:48:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:01,172 INFO L225 Difference]: With dead ends: 21348 [2022-11-21 16:48:01,173 INFO L226 Difference]: Without dead ends: 10710 [2022-11-21 16:48:01,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 16:48:01,215 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 103 mSDsluCounter, 4967 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 49 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 6299 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:01,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 6299 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 994 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2022-11-21 16:48:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10710 states. [2022-11-21 16:48:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10710 to 10705. [2022-11-21 16:48:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10705 states, 7970 states have (on average 1.2806775407779172) internal successors, (10207), 8205 states have internal predecessors, (10207), 2064 states have call successors, (2064), 491 states have call predecessors, (2064), 670 states have return successors, (3895), 2078 states have call predecessors, (3895), 2060 states have call successors, (3895) [2022-11-21 16:48:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10705 states to 10705 states and 16166 transitions. [2022-11-21 16:48:02,101 INFO L78 Accepts]: Start accepts. Automaton has 10705 states and 16166 transitions. Word has length 159 [2022-11-21 16:48:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:48:02,102 INFO L495 AbstractCegarLoop]: Abstraction has 10705 states and 16166 transitions. [2022-11-21 16:48:02,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-21 16:48:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 10705 states and 16166 transitions. [2022-11-21 16:48:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-21 16:48:02,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:48:02,107 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:48:02,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:48:02,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:48:02,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:48:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:48:02,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2130943161, now seen corresponding path program 1 times [2022-11-21 16:48:02,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:48:02,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68835502] [2022-11-21 16:48:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:02,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:48:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:48:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:48:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:48:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:48:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:48:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:48:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:48:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:48:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:48:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:48:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:48:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:05,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:48:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:48:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 16:48:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:05,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:48:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:48:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 16:48:05,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:48:05,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68835502] [2022-11-21 16:48:05,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68835502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:48:05,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119297209] [2022-11-21 16:48:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:48:05,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:48:05,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:48:05,082 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:48:05,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:48:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:48:06,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-21 16:48:06,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:48:07,150 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:48:07,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:48:07,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:48:07,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:48:07,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:48:07,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:48:07,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:48:07,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:48:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:48:07,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:48:07,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119297209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:48:07,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:48:07,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 34 [2022-11-21 16:48:07,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439767802] [2022-11-21 16:48:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:48:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:48:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:48:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:48:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 16:48:07,886 INFO L87 Difference]: Start difference. First operand 10705 states and 16166 transitions. Second operand has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-21 16:48:33,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:48:55,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:48:55,928 INFO L93 Difference]: Finished difference Result 55755 states and 90247 transitions. [2022-11-21 16:48:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 16:48:55,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 159 [2022-11-21 16:48:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:48:56,139 INFO L225 Difference]: With dead ends: 55755 [2022-11-21 16:48:56,140 INFO L226 Difference]: Without dead ends: 45117 [2022-11-21 16:48:56,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=413, Invalid=4417, Unknown=0, NotChecked=0, Total=4830 [2022-11-21 16:48:56,215 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 3928 mSDsluCounter, 15561 mSDsCounter, 0 mSdLazyCounter, 19874 mSolverCounterSat, 1238 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4211 SdHoareTripleChecker+Valid, 17268 SdHoareTripleChecker+Invalid, 21113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1238 IncrementalHoareTripleChecker+Valid, 19874 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:48:56,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4211 Valid, 17268 Invalid, 21113 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1238 Valid, 19874 Invalid, 1 Unknown, 0 Unchecked, 42.0s Time] [2022-11-21 16:48:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45117 states. [2022-11-21 16:48:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45117 to 41431. [2022-11-21 16:48:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41431 states, 31208 states have (on average 1.281658549089977) internal successors, (39998), 32214 states have internal predecessors, (39998), 7338 states have call successors, (7338), 2096 states have call predecessors, (7338), 2884 states have return successors, (17454), 7316 states have call predecessors, (17454), 7334 states have call successors, (17454) [2022-11-21 16:49:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41431 states to 41431 states and 64790 transitions. [2022-11-21 16:49:00,040 INFO L78 Accepts]: Start accepts. Automaton has 41431 states and 64790 transitions. Word has length 159 [2022-11-21 16:49:00,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:49:00,040 INFO L495 AbstractCegarLoop]: Abstraction has 41431 states and 64790 transitions. [2022-11-21 16:49:00,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-21 16:49:00,040 INFO L276 IsEmpty]: Start isEmpty. Operand 41431 states and 64790 transitions. [2022-11-21 16:49:00,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-21 16:49:00,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:49:00,044 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:49:00,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-21 16:49:00,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:49:00,258 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:49:00,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:49:00,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1210083977, now seen corresponding path program 1 times [2022-11-21 16:49:00,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:49:00,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610465221] [2022-11-21 16:49:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:00,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:49:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:02,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:49:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:49:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:02,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:49:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:49:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:49:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:49:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:49:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:49:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:49:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:49:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:49:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:49:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:49:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-21 16:49:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:49:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:49:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 16:49:03,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:49:03,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610465221] [2022-11-21 16:49:03,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610465221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:49:03,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578887872] [2022-11-21 16:49:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:49:03,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:49:03,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:49:03,397 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:49:03,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:49:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:49:04,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 3261 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-21 16:49:04,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:49:05,476 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:49:05,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:49:06,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:49:06,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:49:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:49:06,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:49:06,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578887872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:49:06,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:49:06,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2022-11-21 16:49:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422039490] [2022-11-21 16:49:06,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:49:06,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 16:49:06,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:49:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 16:49:06,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1204, Unknown=9, NotChecked=0, Total=1332 [2022-11-21 16:49:06,636 INFO L87 Difference]: Start difference. First operand 41431 states and 64790 transitions. Second operand has 36 states, 36 states have (on average 5.972222222222222) internal successors, (215), 27 states have internal predecessors, (215), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-21 16:49:45,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:50:29,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:50:29,451 INFO L93 Difference]: Finished difference Result 113662 states and 204241 transitions. [2022-11-21 16:50:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-11-21 16:50:29,452 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.972222222222222) internal successors, (215), 27 states have internal predecessors, (215), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) Word has length 159 [2022-11-21 16:50:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:50:30,227 INFO L225 Difference]: With dead ends: 113662 [2022-11-21 16:50:30,227 INFO L226 Difference]: Without dead ends: 72363 [2022-11-21 16:50:30,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4007 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1135, Invalid=12195, Unknown=10, NotChecked=0, Total=13340 [2022-11-21 16:50:30,509 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 12932 mSDsluCounter, 21292 mSDsCounter, 0 mSdLazyCounter, 36888 mSolverCounterSat, 5678 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13179 SdHoareTripleChecker+Valid, 22787 SdHoareTripleChecker+Invalid, 42567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 5678 IncrementalHoareTripleChecker+Valid, 36888 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:50:30,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13179 Valid, 22787 Invalid, 42567 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [5678 Valid, 36888 Invalid, 1 Unknown, 0 Unchecked, 69.9s Time] [2022-11-21 16:50:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72363 states. [2022-11-21 16:50:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72363 to 63957. [2022-11-21 16:50:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63957 states, 48554 states have (on average 1.2817687523170078) internal successors, (62235), 50072 states have internal predecessors, (62235), 10532 states have call successors, (10532), 3511 states have call predecessors, (10532), 4870 states have return successors, (34204), 10661 states have call predecessors, (34204), 10528 states have call successors, (34204) [2022-11-21 16:50:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63957 states to 63957 states and 106971 transitions. [2022-11-21 16:50:38,774 INFO L78 Accepts]: Start accepts. Automaton has 63957 states and 106971 transitions. Word has length 159 [2022-11-21 16:50:38,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:50:38,775 INFO L495 AbstractCegarLoop]: Abstraction has 63957 states and 106971 transitions. [2022-11-21 16:50:38,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.972222222222222) internal successors, (215), 27 states have internal predecessors, (215), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-21 16:50:38,775 INFO L276 IsEmpty]: Start isEmpty. Operand 63957 states and 106971 transitions. [2022-11-21 16:50:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-21 16:50:38,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:50:38,783 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:50:38,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:50:38,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-21 16:50:38,985 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:50:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:50:38,985 INFO L85 PathProgramCache]: Analyzing trace with hash 58235728, now seen corresponding path program 1 times [2022-11-21 16:50:38,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:50:38,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337061162] [2022-11-21 16:50:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:38,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:50:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 16:50:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-21 16:50:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:50:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:50:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:50:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:50:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:50:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:50:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:50:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:50:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:50:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:50:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:50:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 16:50:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:50:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-21 16:50:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 16:50:42,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:50:42,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337061162] [2022-11-21 16:50:42,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337061162] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:50:42,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952860718] [2022-11-21 16:50:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:50:42,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:50:42,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:50:42,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:50:42,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:50:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:50:43,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 3276 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-21 16:50:43,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:50:44,424 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:50:44,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:50:45,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:50:45,288 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-21 16:50:45,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 16:50:45,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:50:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-21 16:50:45,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:50:46,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952860718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:50:46,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:50:46,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 38 [2022-11-21 16:50:46,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517002071] [2022-11-21 16:50:46,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:50:46,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-21 16:50:46,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:50:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-21 16:50:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1420, Unknown=13, NotChecked=0, Total=1560 [2022-11-21 16:50:46,181 INFO L87 Difference]: Start difference. First operand 63957 states and 106971 transitions. Second operand has 38 states, 38 states have (on average 5.315789473684211) internal successors, (202), 30 states have internal predecessors, (202), 14 states have call successors, (37), 9 states have call predecessors, (37), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-21 16:51:33,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:52:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:52:24,148 INFO L93 Difference]: Finished difference Result 161856 states and 319993 transitions. [2022-11-21 16:52:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-21 16:52:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.315789473684211) internal successors, (202), 30 states have internal predecessors, (202), 14 states have call successors, (37), 9 states have call predecessors, (37), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) Word has length 160 [2022-11-21 16:52:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:52:25,809 INFO L225 Difference]: With dead ends: 161856 [2022-11-21 16:52:25,809 INFO L226 Difference]: Without dead ends: 98356 [2022-11-21 16:52:26,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1214, Invalid=13534, Unknown=14, NotChecked=0, Total=14762 [2022-11-21 16:52:26,627 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 10586 mSDsluCounter, 22424 mSDsCounter, 0 mSdLazyCounter, 36784 mSolverCounterSat, 4591 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10821 SdHoareTripleChecker+Valid, 23984 SdHoareTripleChecker+Invalid, 41376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 4591 IncrementalHoareTripleChecker+Valid, 36784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:52:26,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10821 Valid, 23984 Invalid, 41376 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [4591 Valid, 36784 Invalid, 1 Unknown, 0 Unchecked, 80.1s Time] [2022-11-21 16:52:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98356 states. [2022-11-21 16:52:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98356 to 85902. [2022-11-21 16:52:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85902 states, 65359 states have (on average 1.2815985556694565) internal successors, (83764), 67388 states have internal predecessors, (83764), 13690 states have call successors, (13690), 4926 states have call predecessors, (13690), 6852 states have return successors, (55985), 13967 states have call predecessors, (55985), 13686 states have call successors, (55985) [2022-11-21 16:52:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85902 states to 85902 states and 153439 transitions. [2022-11-21 16:52:40,324 INFO L78 Accepts]: Start accepts. Automaton has 85902 states and 153439 transitions. Word has length 160 [2022-11-21 16:52:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:52:40,331 INFO L495 AbstractCegarLoop]: Abstraction has 85902 states and 153439 transitions. [2022-11-21 16:52:40,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.315789473684211) internal successors, (202), 30 states have internal predecessors, (202), 14 states have call successors, (37), 9 states have call predecessors, (37), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-21 16:52:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 85902 states and 153439 transitions. [2022-11-21 16:52:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-21 16:52:40,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:52:40,346 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:40,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:52:40,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b18a6e5b-eaa8-47e8-b8b8-002915197ebf/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:52:40,565 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:52:40,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash -503808518, now seen corresponding path program 1 times [2022-11-21 16:52:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:40,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940678398] [2022-11-21 16:52:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:40,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat